To activate 2100-Hz answer (ANS) tone detection on either the IP or the PSTN side of the network and to disable the echo
suppressor, use the
tone
incoming command in voice-service VoIP configuration mode or VoIP dial-peer configuration mode. To deactivate tone detection and disable
the echo suppressor, use the
no form of this command.
tone incoming [ip | pstn] {ans-all auto-control | ans disable echo suppressor | anspr disable echo suppressor}
no tone incoming
Syntax Description
ip
|
(Optional) Specifies tone detection on the IP side of the network.
|
pstn
|
(Optional) Specifies tone detection on the PSTN side of the network.
|
ans
auto-control
|
Detects ANS tone and enables standard actions for modem tones.
|
ans-all
disable
echo
suppressor
|
Detects modem answer tones and disables echo suppressor.
|
anspr
disable
echo
suppressor
|
Detects /ANS tone and disables echo suppressor.
|
Command Default
Tone incoming detection is not enabled.
Command Modes
Voice-service VoIP configuration
VoIP dial-peer configuration
Command History
Release
|
Modification
|
12.3(14)T
|
This command was introduced.
|
Usage Guidelines
Use this command in voice-service VoIP or VoIP dial-peer configuration mode to activate detection of all ANS, ANSam, and
ANSpr tones and enable or disable echo canceller control. When this command is issued in voice-service VoIP configuration
mode, all dial peers are globally configured unless a specific dial peer is configured for no tone incoming.
To deactivate all 2100-Hz ANS, ANSam, and ANSpr tone detection on either the IP or the PSTN side of the network, and enable
the echo canceller, use the
no
tone
incoming command in voice-service VoIP configuration or VoIP dial-peer configuration mode.
If neither IP nor PSTN is specified, all ANS, ANSam, and ANSpr tones are detected on both sides of the network, and the echo
suppressor is disabled in all cases.
The
tone
incoming
ip
ans-all
auto-control command is equivalent to these two commands together:
The
tone
incoming
pstn
ans-all
auto-control command is equivalent to these two commands together:
The
tone
incoming
ans-all
auto-control command is equivalent to these four commands together:
-
tone
incoming
ip
ans
disable
echo
suppressor
-
tone
incoming
ip
anspr
disable
echo
suppressor
-
tone
incoming
pstn
ans
disable
echo
suppressor
-
tone
incoming
pstn
anspr
disable
echo
suppressor
When modem tones from either the IP or PSTN direction are received, the echo canceller can be dynamically disabled to allow
modem calls to pass through.
The IP tone detector feature applies only on the following NextPort platforms: Cisco AS5350, Cisco AS5400, and Cisco AS5850--and
only with SIP and H.323 voice signaling. It does not apply to MGCP in VoIP dial-peer configuration mode.
The gateway must be configured for G.711 codecs for the IP tone detector feature to work (see the "Examples" section).
To display the status of the echo canceller, use the
show
port
operational
status command.
Examples
The following example configures tone detection of ANS tones in voice-service VoIP configuration mode:
Router(conf-voi-serv)# tone incoming ip ans disable echo supressor
The following example configures tone detection of all incoming ANS, ANSam, and ANSpr tones on a dial peer:
Router(config-dial-peer)# tone incoming ip ans-all auto-control