Cisco IOS Voice Command Reference

Cisco IOS Voice Commands:
V

This chapter contains commands to configure and maintain Cisco IOS voice applications. The commands are presented in alphabetical order. Some commands required for configuring voice may be found in other Cisco IOS command references. Use the command reference master index or search online to find these commands.

For detailed information on how to configure these applications and features, refer to the Cisco IOS Voice Configuration Guide.

vad (dial peer)

To enable voice activity detection (VAD) for the calls using a particular dial peer, use the vad command in dial peer configuration mode. To disable VAD, use the no form of this command.

vad [aggressive]

no vad [aggressive]

Syntax Description

Command Default

VAD is enabled

Aggressive VAD is enabled in multicast dial peers

Command Modes

Dial peer configuration

Command History

Usage Guidelines

Use this command to enable voice activity detection. With VAD, voice data packets fall into three categories: speech, silence, and unknown. Speech and unknown packets are sent over the network; silence packets are discarded. The sound quality is slightly degraded with VAD, but the connection monopolizes much less bandwidth. If you use the no form of this command, VAD is disabled and voice data is continuously sent to the IP backbone. When configuring voice gateways to handle fax calls, VAD should be disabled at both ends of the IP network because it can interfere with the successful reception of fax traffic.

When the aggressive keyword is used, the VAD noise threshold is reduced from -78 to -62 dBm. Noise that falls below the -62 dBm threshold is considered to be silence and is not sent over the network. Additionally, unknown packets are considered to be silence and are discarded.

Examples

The following example enables VAD for a Voice over IP (VoIP) dial peer, starting from global configuration mode:

dial-peer voice 200 voip

 vad

Related Commands

vad (SPA-DSP)

To enable or disable voice activity detection (vad) settings configured locally irrespective of the external vad settings, use the vad command in config dspfarm profile mode.

vad {on | off} override

Syntax Description

Command Default

By default, VAD is enabled.

Command Modes

DSP Farm Profile Configuration Mode (config-dspfarm-profile)

Command History

Usage Guidelines

Use this command to enable voice activity detection locally irrespective of external VAD settings. With VAD, voice data packets fall into three categories: speech, silence, and unknown. Speech and unknown packets are sent over the network; silence packets are discarded. The sound quality is slightly degraded with VAD, but the connection monopolizes much less bandwidth. If you disable VAD, voice data is continuously sent to the IP backbone.

Examples

The following example enables VAD and overrides external vad settings with local vad settings:

Router(config)# dspfarm profile 1

Router(config-dspfarm-profile)# vad on override

Router(config-dspfarm-profile)# do show running-config

!!!

dspfarm profile 1 transcode

 codec g711ulaw

 codec g711alaw

 codec g729ar8

 codec g729abr8

 maximum sessions 588

 associate application SBC

 vad on override

!

The following example disables local vad settings and overrides external vad setting configuration:

Router(config)# dspfarm profile 1

Router(config-dspfarm-profile)# vad off override

Router(config-dspfarm-profile)# do show running-config

!!!

dspfarm profile 1 transcode

 codec g711ulaw

 codec g711alaw

 codec g729ar8

 codec g729abr8

 maximum sessions 588

 associate application SBC

 vad off override

!

Related Commands

vbd-playout-delay

To configure the voice-band-detection playout-delay buffer on a Cisco router, use the vbd-playout-delay command in voice service session configuration mode. To disable the buffer, use the no form of this command.

vbd-playout-delay {maximum milliseconds | minimum milliseconds | mode {fixed [no-timestamps] | passthrough}| nominal milliseconds}

no vbd-playout-delay

Syntax Description

Defaults

The voice-band-detection playout-delay buffer is disabled.

Command Modes

Voice service session configuration (conf-voi-serv-sess)

Command History

Usage Guidelines

Use this command to set the playout jitter buffer. When a voice band is detected, the call uses the G.711 codec, and the playout delay values that you set are picked up. The original voice-call parameters are restored after the fax or modem call is completed. The no-timestamps keyword sets the jitter buffer at a constant delay without reading time stamps.

Note The passthough keyword is a special mode used to handle clock drifting properly. We recommend this keyword only when instructed by your Cisco representative.

Examples

The following example configures ATM adaptation layer 2 (AAL2) voice-band-detection playout-delay adaptation mode and sets the mode to fixed:

 voice service voatm

 session protocol aal2

  vbd-playout-delay mode fixed

The following example configures AAL2 voice-band-detection playout-delay adaptation mode and sets the mode at a constant delay without timestamps:

voice service voatm

 session protocol aal2

  vbd-playout-delay mode fixed no-timestamps

The following example sets the nominal AAL2 voice-band-detection playout-delay buffer to 12 ms:

voice service voatm 
 session protocol aal2

  vbd-playout-delay nominal 12

The following example sets the AAL2 voice-band-detection playout-buffer delay to a maximum of 55 ms:

voice service voatm 
 session protocol aal2

  vbd-playout-delay maximum 55

The following example sets the AAL2 voice-band-detection playout-buffer delay to a minimum of 22 ms:

voice service voatm 
 session protocol aal2

  vbd-playout-delay minimum 22

Related Commands

vbr-rt

To configure the real-time variable bit rate (VBR) for VoATM voice connections, use the vbr-rt command in the appropriate configuration mode. To disable VBR for voice connections, use the no form of this command.

vbr-rt peak-rate average-rate burst

no vbr-rt

Syntax Description

Command Default

No real-time VBR settings are configured

Command Modes

For an ATM permanent virtual connection (PVC) or switched virtual circuit (SVC): Interface-ATM-VC configuration

For a virtual circuit (VC) class: VC-class configuration

For ATM VC bundle members: Bundle-vc configuration

Command History

Usage Guidelines

This command configures traffic shaping between voice and data PVCs. Traffic shaping is required so that the carrier does not discard calls. To configure voice and data traffic shaping, you must configure the peak, average, and burst options for voice traffic. Configure the burst value if the PVC will carry bursty traffic. Peak, average, and burst values are needed so that the PVC can effectively handle the bandwidth for the number of voice calls.

Calculate the minimum peak, average, and burst values for the number of voice calls as follows:

Peak Value

Peak value = (2 x the maximum number of calls) x 16K = _______________

Average Value

Calculate according to the maximum number of calls that the PVC will carry times the bandwidth per call. The following formulas give you the average rate in kbps:

•For VoIP:

–G.711 with 40- or 80-byte sample size:

Average value = max calls x 128K = _______________

–G.726 with 40-byte sample size:

Average value = max calls x 85K = _______________

–G.729a with 10-byte sample size:

Average value = max calls x 85K = _______________

•For VoATM adaptation layer 2 (VoAAL2):

–G.711 with 40-byte sample size:

Average value = max calls x 85K = _______________

–G.726 with 40-byte sample size:

Average value = max calls x 43K = _______________

–G.729a with 10-byte sample size:

Average value = max calls x 43K = _______________

If voice activity detection (VAD) is enabled, bandwidth usage is reduced by as much as 12 percent with the maximum number of calls in progress. With fewer calls in progress, bandwidth savings are less.

Burst Value

Set the burst size as large as possible, and never less than the minimum burst size. Guidelines are as follows:

•Minimum burst size = 4 x number of voice calls = _______________

•Maximum burst size = maximum allowed by the carrier = _______________

When you configure data PVCs that will be traffic shaped with voice PVCs, use aal5snap encapsulation and calculate the overhead as 1.13 times the voice rate.

Examples

The following example configures the traffic-shaping rate for ATM PVC 20. Peak, average, and burst rates are calculated based on a maximum of 20 calls on the PVC.

pvc 20

 encapsulation aal5mux voice

 vbr-rt 640 320 80

Related Commands

vcci

To identify a permanent virtual circuit (PVC) to the call agent, use the vcci command in ATM virtual circuit (VC) configuration mode. To restore the default value, use the no form of this command.

vcci pvc-identifier

no vcci

Syntax Description

Command Default

No default behavior or values

Command Modes

ATM virtual circuit configuration mode

Command History

Usage Guidelines

The pvc-identifier argument is a unique 15-bit value for each PVC. The call agent sets up a call with the gateway by specifying the PVC using the pvc-identifier.

Examples

The following example shows how to assign a PVC identifier:

Router(config-if-atm-vc)# vcci 5278

Related Commands

video codec (dial peer)

To assign a video codec to a VoIP dial peer, use the video codec command in dial peer configuration mode. To remove a video codec, use the no form of this command.

video codec {h261 | h263 | h263+ | h264}

no video codec

Syntax Description

Command Default

No video codec is configured.

Command Modes

Dial peer configuration

Command History

Usage Guidelines

Use this command to configure a video codec for a VoIP dial peer. If no video codec is configured, the default is transparent codec operation between the endpoints.

Examples

The following example shows configuration for video codec H.263+ on VoIP dial peer 30:

dial-peer voice 30 voip

 video codec h263+

Related Commands

video codec (voice class)

To specify a video codec for a voice class, use the video codec command in voice class configuration mode. To remove the video codec, use the no form of this command.

video codec {h261 | h263 | h263+ | h264}

no video codec {h261 | h263 | h263+ | h264}

Syntax Description

Command Default

No video codec is configured.

Command Modes

Voice class configuration

Command History

Usage Guidelines

Use this command to specify one or more video codecs for a voice class.

Examples

The following example shows configuration for voice class codec 10 with two audio codec preferences and three video codec preferences:

voice class codec 10

 codec preference 1 g711alaw

 codec preference 2 g722

 video codec h261

 video codec h263

 video codec h264

Related Commands

video screening

To enable transcoding and transsizing between two call legs when configuring SIP, use the video screening command in foice service SIP configuration mode. To disable transcoding and transsizing, use no form of this command.

video screening

no video screening

Syntax Description

This command has no arguments or keywords.

Command Default

Video screening is disabled.

Command Modes

Voice service SIP configuration.

Command History

Usage Guidelines

Use this command to enable conversion of video streams if there is a mismatch between two call legs.

Examples

The following example enters the voice-card configuration mode and enables video screening:

Router(config)# voice service voip

Router(config-voicecard)# sip

Router((conf-serv-sip)# video screening

Related Commands

vmwi

To enable DC voltage or FSK visual message-waiting indictator (VMWI) on a Cisco VG224 onboard analog FXS voice port, use the vmwi command in voice-port configuration mode. To reset VMWI to default, use the no form of this command.

vmwi {dc-voltage | fsk}

no vmwi

Syntax Description

Command Default

FSK VMWI is enabled.

Command Modes

Voice-port configuration (config-voiceport)

Command History

Usage Guidelines

This command with the dc-voltage keyword enables the message-waiting lamp to flash on an analog phone that requires DC voltage to activate a visual indicator.

This command with the fsk keyword enables the message-waiting lamp to flash on an analog phone that requires an FSK message to activate a visual indicator.

DC Voltage VMWI is supported for the SCCP telephony control (STC) application only. For all other applications, such as MGCP, FSK will be used even if you configure the vmwi dc-voltage command on the voice gateway.

Examples

The example shows how to enable DC Voltage VMWI on port 2/0 on a Cisco VG224.

Router(config)#voice-port 2/0

Router(config-voiceport)#vmwi dc-voltage

Router(config-voiceport)#end

Related Commands

vofr

To enable Voice over Frame Relay (VoFR) on a specific data-link connection identifier (DLCI) and to configure specific subchannels on that DLCI, use the vofr command in frame relay DLCI configuration mode. To disable VoFR on a specific DLCI, use the no form of this command.

Switched Calls

vofr [data cid] [call-control [cid]]

no vofr [data cid] [call-control [cid]]

Switched Calls to Cisco MC3810 Multiservice Concentrators Running Cisco IOS Releases Release Before 12.0(7)XK and Release 12.1(2)T

vofr [cisco]

no vofr [cisco]

Cisco-Trunk Permanent Calls

vofr data cid call-control cid

no vofr data cid call-control cid

FRF.11 Trunk Calls

vofr [data cid] [call-control cid]

no vofr [data cid] [call-control cid]

Syntax Description

Command Default

Disabled

Command Modes

Frame relay DLCI configuration

Command History

Usage Guidelines

Table 244 lists the different options of the vofr command and which combination of options is used beginning in Cisco IOS Release 12.0(7)XK and Release 12.1(2)T.

Examples

The following example, beginning in global configuration mode, shows how to enable VoFR on serial interface 1/1, DLCI 100. The example configures CID 4 for data; no call-control CID is defined.

interface serial 1/1

 frame-relay interface-dlci 100

 vofr

To configure CID 4 for data and CID 5 for call-control (both defaults), enter the following command:

vofr call-control

To configure CID 10 for data and CID 15 for call-control, enter the following command:

vofr data 10 call-control 15

To configure CID 4 for data and CID 15 for call-control, enter the following command:

vofr call-control 15

To configure CID 10 for data and CID 5 for call-control, enter the following command:

vofr data 10 call-control

To configure CID 10 for data with no call-control, enter the following command:

vofr data 10

Related Commands

voice

To enable voice resource pool services for resource pool management, use the voice command in service profile configuration mode. To disable voice services, use the no form of this command.

voice

no voice

Syntax Description

This command has no arguments or keywords.

Command Default

Disabled

Command Modes

Service profile configuration mode

Command History

Examples

The following example shows that voice service is available and enables voice resource pool service using the voice command in service profile configuration mode:

Router(config)# resource-pool profile service voip

Router(config-service-profile)# ?

  Service Profile Configuration Commands:

  default   Set a command to its defaults

  exit      Exit from resource-manager configuration mode

  help      Description of the interactive help system

  modem     Configure modem service parameters

  no        Negate a command or set in its defaults

  voice     Configure voice service parameters

Router(config-service-profile)# voice

Related Commands

voicecap configure

To apply a voicecap on NextPort platforms, use the voicecap configure command in voice-port configuration mode. To remove a voicecap, use the no form of this command.

voicecap configure {name}

no voicecap configure {name}

Syntax Description

Command Default

No default values or behavior

Command Modes

Voice-port configuration

Command History

Usage Guidelines

The character value for the name argument must be identical to the value entered when you created the voicecap using the voicecap entry command.

Examples

The following example configures a voicecap with the name qualityERL:

Router> enable

Router# configure terminal 

Router(config)# voicecap entry qualityERL v270=120

Router(config)# voice-port 3/0:D

Router(config-voiceport)# voicecap configure qualityERL

Related Commands

voicecap entry

To create a voicecap, use the voicecap entry command in global configuration mode. To disable a voicecap, use the no form of this command.

voicecap entry [name string]

no voicecap entry [name string]

Syntax Description

Command Default

No voice caps can be applied to configure firmware.

Command Modes

Global configuration

Command History

Usage Guidelines

This command configures firmware through voicecap strings. This command allows you to assign values to specific registers. Voicecaps are applied to specific voice ports at system startup.

The voicecap values can be entered in a DSP-recognizable format called raw format. They can also be entered in standard format, which allows you to use commonly accessible values, such as decibels.

Starting with Cisco IOS Release 12.4(4)XC, this command can be used to configure GSMAMR-NB codecs on Cisco AS5350XM and Cisco AS5400XM platforms. The register values for GSMAMR-NB are shown in Table 245.

Examples

The following example creates a voicecap string for a GSMAMR-NB codec named gsmamrnb-ctrl with V register 0 set to 1:

Router> enable

Router# configure terminal 

Router(config)# voicecap entry gsmamrnb-ctrl v0=1

Related Commands

voice call capacity mir

To set the value for the minimum interval between reporting (MIR), use the voice call capacity mir command in global configuration mode. To turn off these attributes, use the no form of this command.

voice call {carrier | trunk-group | prefix} capacity mir seconds

no voice call {carrier | trunk-group | prefix} capacity mir

Syntax Description

Command Default

10 seconds.

Command Modes

Global configuration.

Command History

Usage Guidelines

Because the available circuit (AC) attribute of a destination is very dynamic, reporting of this attribute should be handled carefully. AC should be reported as frequently as possible so that the location server has better information about the resources. However, the location server should not be overwhelmed with too many updates.

All of the AC reporting, called the interesting point of AC, is performed when the specified event happens within the minimum interval between reporting (MIR) time since last reporting. This command sets the amount of time used for the interval to control the number of interesting points that are reported so not to overwhelm the location server with too many AC updates.

The seconds argument cannot be set higher than the time configured for the capacity update interval.

Examples

The following example shows the minimum interval between reporting for the carrier address family set to 25 seconds:

Router(config)# voice call carrier capacity mir 25

Related Commands

voice call capacity reporting

To turn on the reporting of maxima (first derivative) or inflection (second derivative) points in available capacity, use the voice call capacity reporting command in global configuration mode. To turn off the reporting, use the no form of this command.

voice call {carrier | trunk-group | prefix} capacity reporting {maxima | inflection}

no voice call {carrier | trunk-group | prefix} capacity reporting {maxima | inflection}

Syntax Description

Defaults

The capacity reporting function is turned off.

Command Modes

Global configuration.

Command History

Usage Guidelines

The smoothed curve of the available circuits (AC) has maxima, minima, and inflection points. When the curve has reached these points, this represents a change in the call rate.

Maximum, minimum and inflection points are illustrated in Figure 7.

Figure 7 Maximum, Minimum, and Inflection Points for Available Capacity

Examples

The following example shows the reporting of the available capacity inflection point on the trunk group is turned on:

Router(config)# voice call trunk-group capacity reporting inflection

Related Commands

voice call capacity stw

To set the value for smoothing transition time for weight (STW), use the voice call capacity stw command in global configuration mode. To turn off these attributes, use the no form of this command.

voice call {carrier | trunk-group | prefix} capacity stw seconds

no voice call {carrier | trunk-group | prefix} capacity stw seconds

Syntax Description

Command Default

10 seconds.

Command Modes

Global configuration.

Command History

Usage Guidelines

Because the available circuit (AC) attribute of a destination is very dynamic, reporting of this attribute should be handled carefully. AC should be reported as frequently as possible so that the location server has better information about the resources. However, the location server should not be overwhelmed with too many updates.

A smoothing algorithm is applied to the quantity of AC being reported. This algorithm eliminates reporting of noise. The degree of smoothing can be configured with the voice call capacity stw command. This command sets the smoothing transition time for weight, which is the time it takes for current smoothed value of AC to come half way between the current smoothed value and the current instantaneous value of AC. Lower stw values speed the smoothed value of AC as it approaches the instantaneous value of AC. When stw is set to 0, the smoothed value is always equal to the instantaneous value of AC.

Examples

The following example shows the smoothing time for weight for the carrier address family set to 25 seconds:

Router(config)# voice call carrier capacity stw 25

Related Commands

voice call capacity timer interval

To set the periodic interval for reporting capacity from carrier, trunk group, or prefix databases, use the voice call capacity timer interval command in global configuration mode. To turn off the interval, use the no form of this command.

voice call {carrier | trunk-group | prefix} capacity timer interval seconds

no voice call {carrier | trunk-group | prefix} capacity timer interval seconds

Syntax Description

Command Default

25 seconds

Command Modes

Global configuration

Command History

Usage Guidelines

For the reporting interval, a periodic timer called the capacity update timer handles updates of available circuit (AC) information and can be configured using the voice call capacity timer interval command. For example, if AC has changed since the last reporting, the AC is again reported when the capacity update timer expires.

Examples

The following example sets the timer interval for the prefixes set at 15 seconds:

Router(config)# voice call prefix capacity timer interval 15

Related Commands

voice call convert-discpi-to-prog

To convert a disconnect message with a progress indicator (PI) to a progress message, use the voice call convert-discpi-to-prog command in global configuration mode. To return to the default condition, use the no form of this command.

voice call convert-discpi-to-prog [tunnel-IEs | always [tunnel-IEs]]

no voice call convert-discpi-to-prog

Syntax Description

Command Default

A disconnect message with a PI is not converted to a progress message.

Command Modes

Global configuration

Command History

Usage Guidelines

The voice call convert-discpi-to-prog command turns an ISDN disconnect message into a progress message. If you use the tunnel-IEs keyword, the information elements are not dropped when the disconnect message is converted to a progress message.

Examples

The following example changes a disconnect with PI to a progress message containing information elements (IEs):

voice call convert-discpi-to-prog tunnel-IEs

The following example changes a disconnect with PI to a progress message in the preconnected and connected states:

voice call convert-discpi-to-prog always

Related Commands

voice call csr data-points

To set the number of call success rate (CSR) data points, use the voice call csr data-points command in global configuration mode. To disable the setting of the CSR data points, use the no form of this command.

voice call {carrier | trunk-group | prefix} csr data-points value

no voice call {carrier | trunk-group | prefix} csr data-points value

Syntax Description

Command Default

30 data points

Command Modes

Global configuration

Command History

Examples

The following example sets the CSR data points for trunk groups at 10:

Router(config)# voice call trunk-group csr data-points 10

Related Commands

voice call csr recording interval

To set the recording interval for call success rates (CSR), use the voice call csr recording interval command in global configuration mode. To disable the CSR recording interval, use the no form of this command.

voice call {carrier | trunk-group | prefix} csr recording interval minutes

no voice call {carrier | trunk-group | prefix} csr recording interval minutes

Syntax Description

Command Default

60 minutes

Command Modes

Global configuration

Command History

Examples

The following example sets the CSR recording interval for prefixes at 30 minutes:

Router(config)# voice call carrier csr recording interval 30

Related Commands

voice call csr reporting interval

To set the reporting interval for call success rate (CSR), use the voice call csr reporting interval command in global configuration mode. To disable the CSR recording interval, use the no form of this command.

voice call {carrier | trunk-group | prefix} csr reporting interval seconds

no voice call {carrier | trunk-group | prefix} csr reporting interval seconds

Syntax Description

Command Default

25 seconds

Command Modes

Global configuration

Command History

Examples

The following example sets the CSR reporting interval for trunk groups at 40 seconds:

Router(config)# voice call carrier csr reporting interval 40

Related Commands

voice call debug

To debug a voice call, use the voice call debug command in global configuration mode. To display a full globally unique identifier (GUID) or header as explained in the Usage Guidelines section, use the no form of this command.

voice call debug full-guid | short-header

no voice call debug full-guid | short-header

Syntax Description

Command Default

The short 6-byte header displays.

Command Modes

Global configuration

Command History

Usage Guidelines

Despite its nontraditional syntax (trailing rather than preceding "debug"), this is a normal debug command.

You can control the contents of the standardized header. Display options for the header are as follows:

•Short 6-byte GUID

•Full 16-byte GUID

•Short header which contains only the CallEntry ID

The format of the GUID headers is as follows:
//CallEntryID/GUID/Module-Dependent-List/Function-name:.

The format of the short header is as follows:
//CallEntryID/Function-name:.

When the voice call debug short-header command is entered, the header displays with no GUID or module-specific parameters. When the no voice call debug short-header command is entered, the header, the 6-byte GUID, and module-dependent parameter output displays. The default option is displaying the 6-byte GUID trace.

Note Using the no form of this command does not turn off debugging.

Examples

The following is sample output when the full-guid keyword is specified:

Router# voice call debug full-guid

!

00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/vtsp_insert_cdb: 
00:05:12: //-1/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/CCAPI/cc_incr_if_call_volume: 
00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/vtsp_open_voice_and
_set_params:

00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/vtsp_modem_proto_fr
om_cdb:

00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/set_playout_cdb: 
00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/vtsp_dsp_echo_cance
ller_control:

Note The "//-1/" output indicates that CallEntryID for the CCAPI module is not available.

Table 246 describes significant fields shown in the display.

The following is sample output when the short-header keyword is specified:

Router(config)# voice call debug short-header

!

00:05:12: //1/vtsp_insert_cdb: 

00:05:12: //-1/cc_incr_if_call_volume: 

00:05:12: //1/vtsp_open_voice_and_set_params:

00:05:12: //1/vtsp_modem_proto_from_cdb:

00:05:12: //1/set_playout_cdb: 

00:05:12: //1/vtsp_dsp_echo_canceller_control:

Note The "//-1/" output indicates that CallEntryID for CCAPI is not available.

Related Commands

voice call disc-pi-off

To enable the gateway to treat a disconnect message with progress indicator (PI) like a standard disconnect without a PI, use the voice call disc-pi-off command in global configuration mode. To reset to the default, use the no form of this command.

voice call disc-pi-off

no voice call disc-pi-off

Syntax Description

This command has no keywords or arguments.

Command Default

Gateway disconnects incoming call leg when it receives a disconnect message with PI.

Command Modes

Global configuration

Command History

Usage Guidelines

Use this command if the gateway is connected to a switch that sends a release immediately after it receives a Disconnect with PI. To properly handle the call, the switch should open a backward voice path and keep the call active. Otherwise the rotary dial peer feature does not work because the incoming call leg is disconnected. Using this command enables the gateway to handle a disconnect with PI like a regular disconnect message so that you can use the rotary dial peer feature.

Examples

The following example enables the gateway to properly handle a disconnect with PI:

voice call disc-pi-off

Related Commands

voice call send-alert

To enable the terminating gateway to send an alert message instead of a progress message after it receives a call setup message, use the voice call send-alert command in global configuration mode. To reset to the default, use the no form of this command.

voice call send-alert

no voice call send-alert

Syntax Description

This command has no arguments or keywords.

Command Default

The terminating gateway sends a progress message after it receives a call Setup message.

Command Modes

Global configuration

Command History

Usage Guidelines

In Cisco IOS Release 12.1(3)XI and later, the terminating gateway sends a Progress message with a progress indicator (PI) after it receives a Setup message. Previously, the gateway responded with an Alert message after receiving a call. In some cases, if the terminating switch does not forward the progress message to the originating gateway, the originating gateway does not cut-through the voice path until a Connect is received and the caller does not hear a ringback tone. In these cases, you can use the voice call send-alert command to make the gateway backward compatible with releases earlier than Cisco IOS Release 12.1(3)XI. If you configure the voice call send-alert command, the terminating gateway sends an Alert message after it receives a Setup message from the originating gateway.

To complete calls from a PRI to an FXS interface, configure the voice call send-alert command on the FXS device.

Examples

The following example configures the gateway to send an Alert message:

voice call send-alert

Related Commands

voice call trap deviation

To configure the percentage deviation for voice call trap parameters, use the voice call trap deviation command in global configuration mode. To disable the configured percentage deviation, use the no form of this command.

voice call trap deviation percent [vad]

no voice call trap deviation percent [vad]

Syntax Description

Command Default

This command is enabled by default, and the deviation for trapping calls is set to 49 percent.

Command Modes

Global configuration (config)

Command History

Usage Guidelines

Prior to Release 15.0(1)M, if a non-default percent value was configured, it could be disabled by entering the no voice call trap deviation percent command, even if the percent value was not the configured value. For example, if the voice call trap deviation 30 command was configured, the no voice call trap deviation 40 command disabled the initial command.

Beginning in Release 15.0(1)M, the percent value in the no form of the command must match the configured non-default value. For example, if the voice call trap deviation 30 command is configured, the only way to disable it is to enter the no voice call trap deviation 30 command. If the no voice call trap deviation 40 command is entered, the command-line interface displays this message: "Please enter correct deviation."

Examples

The following example shows how to set the deviation value for trapping calls to 30 percent:

Router(config)# voice call trap deviation 30 vad

voice call trigger hwm

To set the value for high water mark in the available capacity in the trunk group or prefix databases, use the voice call trigger hwm command in global configuration mode. To disable the trigger point, use the no form of this command.

voice call {carrier | trunk-group | prefix} trigger hwm percent

no voice call {carrier | trunk-group | prefix} trigger hwm percent

Syntax Description

Command Default

80 percent

Command Modes

Global configuration.

Command History

Usage Guidelines

Available circuits are reported when the value of AC goes above a threshold, called the high water mark. This can be configured with the voice call trigger hwm command. When the hwm option is selected and the value is set to 100, no update is sent due to high water mark.

Examples

The following example sets the trigger for available capacity on trunk groups to send at a high water mark of 75%:

Router(config)# voice call trunk-group trigger hwm 75

Related Commands

voice call trigger lwm

To set the value for low water mark in the available capacity in the trunk group or prefix databases, use the voice call trigger lwm command in global configuration mode. To disable the trigger point, use the no form of this command.

voice call {carrier | trunk-group | prefix} trigger lwm percent

no voice call {carrier | trunk-group | prefix} trigger lwm percent

Syntax Description

Command Default

10 percent

Command Modes

Global configuration

Command History

Usage Guidelines

Available circuits are reported when the value of AC falls below a threshold, called the low water mark. When the lwm option is selected and the value is set to 0, no update is sent due to low water mark.

Examples

The following example sets the trigger for available capacity for E.164 prefixes to send at a low water mark of 25%:

Router(config)# voice call prefix trigger lwm 25

Related Commands

voice call trigger percent-change

To set the value for percentage change, low water mark and high water mark in the available capacity in the trunk group or prefix databases, use the voice call trigger command in global configuration mode. To disable the trigger point, use the no form of this command.

voice call {carrier | trunk-group | prefix} trigger percent-change percent

no voice call {carrier | trunk-group | prefix} trigger percent-change percent

Syntax Description

Command Default

30 percent

Command Modes

Global configuration.

Command History

Usage Guidelines

Available circuits are reported when the absolute percent change is above a threshold. When the percent-change option is selected and the value is set to 0, no update for percent change is sent

Examples

The following example sets the trigger for available capacity on the carrier codes to send at a percentage change of 15%:

Router(config)# voice call carrier trigger percent-change 15

Related Commands

voice-card

To enter voice-card configuration mode and configure a voice card, use the voice-card command in global configuration mode. There is no no form of this command.

voice-card slot

Syntax Description

Command Default

No default behavior or values

Command Modes

Global configuration

Command History

Usage Guidelines

Voice-card configuration mode is used for commands that configure the use of digital signal processing (DSP) resources, such as codec complexity and DSPs. DSP resources can be found in digital T1/E1 packet voice trunk network modules on Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series.

Codec complexity is configured in voice-card configuration mode and has the following platform-specific usage guidelines:

•On Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745, the slot argument corresponds to the physical chassis slot of the network module that has DSP resources to be configured.

DSP resource sharing is also configured in voice-card configuration mode. On the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745 under specific circumstances, configuration of the dspfarm command enters DSP resources on a network module or AIM into a DSP resource pool. Those DSP resources are then available to process voice traffic on a different network module or voice/WAN interface card (VWIC). See the dspfarm (voice-card) command reference for more information about DSP resource sharing.

Note When running high-complexity images, the system can only process up to 16 voice channels. Those 16 time slots need to be within a contiguous range (timeslot maximum (TSmax) minus timeslot minimum (TSmin) is less than or equal to 16, where TSmax and TSmin are the maximum DS0 and minimum DS0 configured for voice).

This command does not have a no form.

Examples

The following example enters voice-card configuration mode to configure resources on the network module in slot 1:

voice-card 1

The following example shows how to enter voice-card configuration mode and load high-complexity DSP firmware on voice-card 0. The dspfarm command enters the DSP resources on the AIM specified in the voice-card command into the DSP resource pool.

voice-card 0

 codec complexity high

 dspfarm

Related Commands

voice cause-code

To set the internal Q850 cause code mapping for voice and to enter voice cause configuration mode, use the voice cause-code command in global configuration mode. To disable the internal Q850 cause code mapping for voice, use the no form of this command.

voice cause-code

no voice cause-code

Syntax Description

This command has no arguments or keywords.

Command Default

Internal Q850 cause code mapping for voice is disabled.

Command Modes

Global configuration (config)

Command History

Examples

The following example shows how to set the cause code mapping for voice:

Router> enable

Router# configure terminal

Router(config)# voice cause-code

Related Commands

voice class aaa

To enable dial-peer-based VoIP AAA configurations, use the voice class aaa command in global configuration mode. To disable dial-peer-based VoIP AAA configurations, use the no form of this command.

voice class aaa tag

no voice class aaa tag

Syntax Description

Command Default

No default behaviors or values

Command Modes

Global configuration

Command History

Usage Guidelines

The voice class aaa configuration command sets up a voice service class that allows you to perform dial-peer-based AAA configurations.

The command activates voice class AAA configuration mode. Commands that are configured in voice class AAA configuration mode are listed in the "Related Commands" section.

Examples

The following example shows AAA configurations in voice class AAA configuration mode. The number assigned to the tag is 1.

voice class aaa 1

 authentication method dp

 authorization method dp

 accounting method dp

in-bound

 accounting template temp-dp 

The following example shows accounting configurations in voice class AAA configuration mode:

voice class aaa 2

 accounting method dp-out out-bound

 accounting template temp-dp out-bound

Related Commands

voice class busyout

To create a voice class for local voice busyout functions, use the voice class busyout command in global configuration mode. To delete the voice class, use the no form of this command.

voice class busyout tag

no voice class busyout tag

Syntax Description

Command Default

No voice class is configured for busyout functions.

Command Modes

Global configuration

Command History

Usage Guidelines

You can apply a busyout voice class to multiple voice ports. You can assign only one busyout voice class to a voice port. If a second busyout voice class is assigned to a voice port, the second voice class replaces the one previously assigned.

If you assign a busyout voice class to a voice port, you may not assign separate busyout commands directly to the voice port, such as busyout monitor serial, busyout monitor ethernet, or busyout monitor probe.

Examples

The following example configures busyout voice class 20, in which the connections to two remote interfaces are monitored by a response time reporter (RTR) probe with a G.711ulaw profile, and voice ports are busied out whenever both links have a packet loss exceeding 10 percent and a packet delay time exceeding 2 seconds:

voice class busyout 20

 busyout monitor probe 171.165.202.128 g711u loss 10 delay 2000

 busyout monitor probe 171.165.202.129 g711u loss 10 delay 2000

The following example configures busyout voice class 30, in which voice ports are busied out when serial ports 0/0, 1/0, 2/0, and 3/0 go out of service.

voice class busyout 30

 busyout monitor serial 0/0

 busyout monitor serial 1/0

 busyout monitor serial 2/0

 busyout monitor serial 3/0

Related Commands

voice class called number

To define a voice class called number or range of numbers, use the voice class called number command in global configuration mode. To remove a voice class called number, use the no form of this command.

voice class called number {inbound | outbound | pool} tag

no voice class called number

Syntax Description

Command Default

No voice class called number is configured.

Command Modes

Global configuration

Command History

Usage Guidelines

Use this command to define one or more static voice class called numbers for inbound and outbound POTS dial peers or a dynamic voice class called number pool. The indexes for a voice class called number are defined with the index (voice class) command.

Note Enter the voice class called number command in global configuration mode without hyphens. Enter the voice-class called-number command in dial peer configuration mode with hyphens.

Examples

The following example shows configuration for an outbound voice class called number:

voice class called number outbound 30

 index 1 5550100

 index 2 5550101

 index 3 5550102

 index 4 5550103

The following example shows configuration for a voice class called number pool:

voice class called number pool 1

 index 1 5550100 - 5550199

Related Commands

voice class cause-code

To configure cause code list parameters for a voice class and to enter cause code configuration mode, use the voice class cause-code command in global configuration mode. To disable the cause code list parameters configuration for a voice class, use the no form of this command.

voice class cause-code number

no voice class cause-code number

Syntax Description

Command Default

The cause code list parameters are not defined.

Command Modes

Global configuration (config)

Command History

Examples

The following example shows how to configure cause code list parameters for voice class 5:

Router> enable

Router# configure terminal

Router(config)# voice class cause-code 5

Related Commands

voice class codec

To enter voice-class configuration mode and assign an identification tag number for a codec voice class, use the voice class codec command in global configuration mode. To delete a codec voice class, use the no form of this command.

voice class codec tag

no voice class codec tag

Syntax Description

Command Default

No default behavior or values

Command Modes

Global configuration

Command History

Usage Guidelines

This command only creates the voice class for codec selection preference and assigns an identification tag. Use the codec preference command to specify the parameters of the voice class, and use the voice-class codec dial-peer command to apply the voice class to a VoIP dial peer.

Note The voice class codec command in global configuration mode is entered without a hyphen. The voice-class codec command in dial peer configuration mode is entered with a hyphen.

Examples

The following example shows how to enter voice-class configuration mode and assign a voice class tag number starting from global configuration mode:

voice class codec 10

After you enter voice-class configuration mode for codecs, use the codec preference command to specify the parameters of the voice class.

The following example creates preference list 99, which can be applied to any dial peer:

voice class codec 99

 codec preference 1 g711alaw

 codec preference 2 g711ulaw bytes 80

 codec preference 3 g723ar53

 codec preference 4 g723ar63 bytes 144

 codec preference 5 g723r53

 codec preference 6 g723r63 bytes 120

 codec preference 7 g726r16

 codec preference 8 g726r24

 codec preference 9 g726r32 bytes 80

 codec preference 10 g728

 codec preference 11 g729br8

 codec preference 12 g729r8 bytes 50

Related Commands

voice class custom-cptone

To create a voice class for defining custom call-progress tones to be detected, use the voice class custom-cptone command in global configuration mode. To delete the voice class, use the no form of this command.

voice class custom-cptone cptone-name

no voice class custom-cptone cptone-name

Syntax Description

Command Default

No voice class of custom call-progress tones is created.

Command Modes

Global configuration

Command History

Usage Guidelines

After you create a voice class, you need to define custom call-progress tones for this voice class using the dualtone command.

Examples

The following example creates a voice class named country-x.

voice class custom-cptone country-x

The following example deletes the voice class named country-x.

no voice class custom-cptone country-x

Related Commands

voice class dualtone

To create a voice class for Foreign Exchange Office (FXO) supervisory disconnect tone detection parameters, use the voice class dualtone command in global configuration mode. To delete the voice class, use the no form of this command.

voice class dualtone tag

no voice class dualtone tag

Syntax Description

Command Default

No voice class is configured for tone detection parameters.

Command Modes

Global configuration

Command History

Usage Guidelines

Use this command first to create the voice class. Then use the supervisory disconnect dualtone voice-class command to assign the voice class to a voice port.

A voice class can define any number of tones to be detected. You need to define a matching tone for each supervisory disconnect tone expected from a PBX or from the public switched telephone network (PSTN).

Examples

The following example configures voice class dualtone 70, which defines one tone with two frequency components, and does not configure a cadence list:

voice class dualtone 100

 freq-pair 1 350 440

 freq-max-deviation 10

 freq-max-power 6

 freq-min-power 25

 freq-power-twist 15

 freq-max-delay 16

 cadence-min-on-time 50

 cadence-max-off-time 400

 cadence-variation 8

 exit

The following example configures voice class dualtone 100, which defines one tone with two frequency components, and configures a cadence list:

voice class dualtone 100

 freq-pair 1 350 440

 freq-pair 2 480 850

 freq-max-deviation 10

 freq-max-power 6

 freq-min-power 25

 freq-power-twist 15

 freq-max-delay 16

 cadence-min-on-time 50

 cadence-max-off-time 400

 cadence-list 1 100 100 300 300

 cadence-variation 8

 exit

The following example configures voice class dualtone 90, which defines three tones, each with two frequency components, and configures two cadence lists:

voice class dualtone 90

 freq-pair 1 350 440

 freq-pair 2 480 850

 freq-pair 3 1000 1250

 freq-max-deviation 10

 freq-max-power 6

 freq-min-power 25

 freq-power-twist 15

 freq-max-delay 16

 cadence-min-on-time 50

 cadence-max-off-time 500

 cadence-list 1 100 100 300 300 100 200

 cadence-list 2 100 200 100 400

 cadence-variation 8

 exit

Related Commands

voice class dualtone-detect-params

To create a voice class for defining a set of tolerance limits for the frequency, power, and cadence parameters of the tones to be detected, use the voice class dualtone-detect-params command in global configuration mode. To delete the voice class, use the no form of this command.

voice class dualtone-detect-params tag

no voice class dualtone-detect-params tag

Syntax Description

Command Default

No voice class is configured for defining answer-supervision tolerance limits.

Command Modes

Global configuration

Command History

Usage Guidelines

Use this command to create a voice class in which you can define maximum and minimum call-progress tone tolerance parameters that you can apply to any voice port. These parameters further define the call-progress tones defined by the voice class custom-cptone command. Use the supervisory dualtone-detect-params command to apply these tolerance parameters to a voice port.

Examples

The following example creates voice class 70, in which you can specify modified boundaries and limits for call-progress tone detection.

voice class dualtone-detect-params 70

freq-max-deviation 25

freq-max-power -5

freq-min-power -20

freq-power-twist 10

freq-max-delay 50

cadence-variation 80

exit

Related Commands

voice class h323

To create an H.323 voice class that is independent of a dial peer and can be used on multiple dial peers, use the voice class h323 command in global configuration mode. To remove the voice class, use the no form of this command.

voice class h323 tag

no voice class h323

Syntax Description

Command Default

No default behavior or values

Command Modes

Global configuration

Command History

Usage Guidelines

The voice class h323 command in global configuration mode does not include a hyphen. The voice-class h323 command in dial peer configuration mode includes a hyphen.

Examples

The following example demonstrates how a voice class is created and applied to an individual dial peer. Voice class 4 contains a command to disable the capability to detect Cisco CallManager systems in the network (this command is used by Cisco CallManager Express 3.1 and later versions). The example then uses the voice-class h323 command to apply voice class 4 to dial peer 36.

Router(config)# voice class h323 4

Router(config-class)# no telephony-service ccm-compatible

Router(config-class)# exit

Router(config)# dial-peer voice 36 voip

Router(config-dial-peer)# destination-pattern 555....

Router(config-dial-peer)# session target ipv4:10.5.6.7 

Router(config-dial-peer)# voice-class h323 4

Related Commands

voice class media

To configure the media control parameters for voice, use the voice class media command in global configuration mode. To disable the media control parameters for voice, use the no form of this command.

voice class media number

no voice class media number

Syntax Description

Command Default

The media control parameters for voice are not configured.

Command Modes

Global configuration (config)

Command History

Examples

The following example shows how to configure media control parameters for voice:

Router> enable

Router# configure terminal

Router(config)# voice class media 5

Related Commands

voice class permanent

To create a voice class for a Cisco trunk or FRF.11 trunk, use the voice class permanent command in global configuration mode. To delete the voice class, use the no form of this command.

voice class permanent tag

no voice class permanent tag

Syntax Description

Command Default

No voice class is configured.

Command Modes

Global configuration

Command History

Usage Guidelines

The voice class permanent command can be used for Voice over Frame Relay (VoFR), Voice over ATM (VoATM), and Voice over IP (VoIP) trunks.

The voice class permanent command in global configuration mode is entered without a hyphen. The voice-class permanent command in dial-peer and voice-port configuration modes is entered with a hyphen.

Examples

The following example shows how to create a permanent voice class starting from global configuration mode:

voice class permanent 10

 signal keepalive 3

 exit

Related Commands

voice class resource-group

To enter voice-class configuration mode and assign an identification tag number for a resource group, use the voice class resource-group command in global configuration mode. To delete a resource group, use the no form of this command.

voice class resource-group tag

no voice class resource-group tag

Syntax Description

Command Default

No resource groups are created.

Command Modes

Global configuration (config)

Command History

Usage Guidelines

Use the voice class resource-group command to configure parameters along with the threshold values to be monitored for resource groups. When you use the voice class resource-group command, the router enters voice-class configuration mode. You can then group the resources to be monitored and configure parameters such as .

Examples

The following example shows how to enter voice-class configuration mode and assign identification tag number 5 for a resource group:

Router> enable

Router# configure terminal

Router(config)# voice class resource-group 5

Related Commands

voice class sip-copylist

To configure a list of entities to be sent to the peer call leg, use the voice class sip-copylist command in global configuration mode. To disable the configuration, use the no form of this command.

voice class sip-copylist tag

no voice class sip-copylist tag

Syntax Description

Command Default

No header is sent to the peer call leg.

Command Modes

Global configuration (config)

Command History

Usage Guidelines

Use the voice class sip-copylist command to configure Cisco Unified Border Element (UBE) to pass an unsupported parameter present in a mandatory header from one call leg to another of Cisco UBE. You can copy the inbound message headers into variables and pass the headers to the outbound call leg.

Examples

The following example shows how to configure a SIP list to be sent to the peer call leg:

Router(config)# voice class sip-copylist 5

Related Commands

voice class sip-profiles

To configure Session Initiation Protocol (SIP) profiles for a voice class, use the voice class sip-profiles command in global configuration mode. To disable the SIP profiles for a voice class, use the no form of this command.

voice class sip-profiles number

no voice class sip-profiles number

Syntax Description

Command Default

SIP profiles for a voice class are not configured.

Command Modes

Global configuration (config)

Command History

Examples

The following example shows to specify SIP profile 2 for a voice class:

Router> enable

Router# configure terminal

Router(config)# voice class sip-profiles 2

Related Commands

voice-class stun-usage

To configure voice class, enter voice class configuration mode called stun-usage and use the voice-class stun-usage command in global, dial-peer, ephone, ephone template, voice register pool, or voice register pool template configuration mode. To disable the voice class, use the no form of this command.

voice-class stun-usage tag

no voice-class stun-usage tag

Syntax Description

Command Default

The voice class is not defined.

Command Modes

Global configuration (config)
Dial peer configuration (config-dial-peer)
Ephone configuration (config-ephone)
Ephone template configuration (config-ephone-template)
Voice register pool configuration (config-register-pool)
Voice register pool template configuration (config-register-pool)

Command History

Usage Guidelines

When the voice-class stun-usage is removed, the same is removed automatically from the dial-peer, ephone, ephone template, voice register pool, or voice register pool template configurations.

Examples

The following example shows how to set the voice class stun-usage tag to 10000:

Router(config)# voice class stun-usage 10000

Router(config-ephone)# voice class stun-usage 10000

Router(config-voice-register-pool)# voice class stun-usage 10000

Related Commands

voice class tone-signal

To enter voice-class configuration mode and create a tone-signal voice class, use the voice class tone-signal command in global configuration mode. To delete a tone-signal voice class, use the no form of this command.

voice class tone-signal tag

no voice class tone-signal tag

Syntax Description

Command Default

No default behavior or values

Command Modes

Global configuration

Command History

Usage Guidelines

Use the voice class tone-signal command to define wakeup, frequency selection, and guard tones to be played out before and during the voice packets for a specific voice port. Use the inject guard-tone, inject pause, and inject tone commands to define the tone signaling in this class. You can configure up to ten tones in a tone-signal voice class.

To avoid voice loss at the receiving end of an LMR system, the maximum of the sum of the durations of the injected tones and pauses in the voice class should not exceed 1500 milliseconds. You must also use the timing delay-voice tdm command to configure a delay for the voice packet equal to the sum of the durations of all the injected tones and pauses.

Note that the hyphenation in this command differs from the hyphenation used in a similar command, voice-class tone-signal, which is used in voice-port configuration mode.

Examples

The following example shows how to create a tone-signal voice class starting from global configuration mode:

voice class tone-signal mytones

 inject tone 1 1950 3 150

 inject tone 2 2000 0 60

 inject pause 3 60

 inject tone 4 2175 3 150

 inject tone 5 1000 0 50

Related Commands

voice class uri

To create or modify a voice class for matching dial peers to a Session Initiation Protocol (SIP) or telephone (TEL) uniform resource identifier (URI), use the voice class uri command in global configuration mode. To remove the voice class, use the no form of this command.

voice class uri tag {sip | tel}

no voice class uri tag

Syntax Description

Command Default

No default behavior or values

Command Modes

Global configuration

Command History

Usage Guidelines

•This command takes you to voice URI class configuration mode, where you configure the match characteristics for a URI. The commands that you enter in this mode define the set of rules by which the URI in a call is matched to a dial peer.

•To reference this voice class for incoming calls, use the incoming uri command in the inbound dial peer. To reference this voice class for outgoing calls, use the destination uri command in the outbound dial peer.

•Using the no voice class uri command removes the voice class from any dial peer where it is configured with the destination uri or incoming uri commands.

Examples

The following example defines a voice class for SIP URIs:

voice class uri r100 sip

 user-id abc123

 host server1

 phone context 408

The following example defines a voice class for TEL URIs:

voice class uri r101 tel

 phone number ^408

 phone context 408

Related Commands

voice class uri sip preference

To set the preference for selecting a voice class for Session Initiation Protocol (SIP) uniform resource identifiers (URIs), use the voice class uri sip preference command in global configuration mode. To reset to the default, use the no form of this command.

voice class uri sip preference {user-id | host}

no voice class uri sip preference

Syntax Description

Command Default

Host field

Command Modes

Global configuration

Command History

Usage Guidelines

•Use this command to resolve ties when more than one voice class is matched for a SIP URI. The default is to match on the host field of the URI.

•This command applies globally to all URI voice classes for SIP.

Examples

The following example defines the preference as the user-id for a SIP voice class:

voice class uri sip preference user-id

Related Commands

voice-class aaa (dial peer)