Reset and Restart Cisco Unified IP Phones

Information About Resetting and Restarting Phones

Differences between Resetting and Restarting IP Phones

Cisco Unified IP phones must be rebooted after configuration changes in order for the changes to be effective. Configurations for phones in Cisco Unified CME are downloaded when a phone is rebooted or reset. You can reboot a single phone or you can reboot all phones in a Cisco Unified CME system. The differences between reboot types are summarized in Table 1.


Note

When rebooting multiple IP phones, it is possible for a conflict to occur if too many phones attempt to access changed Cisco Unified CME configuration information via TFTP simultaneously.

Table 1. reset and restart Command Differences

reset Command

restart Command

Type of Reboot

Similar to power-off, power-on reboot.

Quick restart.

Phone Configurations

Downloads configurations for IP phones.

Downloads configurations for IP phones.

DHCP and TFTP

Contacts DHCP and TFTP servers for updated configuration information.

Note

 

This command was introduced for SIP phones in Cisco CME 3.4.

Phones contact the TFTP server for updated configuration information and reregister without contacting the DHCP server.

Note

 

This command was introduced for SIP phones in Cisco Unified CME 4.1.

Processing Time

Takes longer to process when updating multiple phones.

Faster processing for multiple phones.

When Required

  • Date and time settings

  • Network locale

  • Phone firmware

  • Source address

  • TFTP path

  • URL parameters

  • User locale

  • Voicemail access number

Can be used when updating the following:

  • Directory numbers

  • Phone buttons

  • Speed-dial numbers

  • Directory numbers

  • Phone buttons

  • Speed-dial numbers

Cisco Unified CME TAPI Enhancement

Before Cisco Unified CME 7.0(1), the only method to clear a session between a Microsoft Windows Workstation and an SCCP phone that was out-of-sync was to reboot the router. In Cisco Unified CME 7.0(1) and later versions, you can clear a Telephony Application Programming Interface (TAPI) session that is in a frozen state or out of synchronization by using a Cisco IOS software command. For configuration information, see Reset a Session Between a TAPI Application and an SCCP Phone.

This enhancement also automatically handles ephone-TAPI registration error conditions. No additional configuration is required for this new feature.

Reset and Restart Phones


Note

If phones are not yet plugged in, resetting or restarting phones is not necessary. Instead, connect your IP phones to your network to boot the phone and download the required configuration files.

Use the reset Command on SCCP Phones

To reboot and reregister one or more SCCP phones, including contacting the DHCP server for updated information, perform the following steps.

Before you begin

  • Phones to be rebooted are connected to the Cisco Unified CME router.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. telephony-service or ephone ephone-tag
  4. reset { all [ time-interval] | cancel | mac-address mac-address | sequence-all} or reset
  5. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3

telephony-service or ephone ephone-tag

Example:

Router(config)# telephony-service
or 
Router(config)# ephone 1

Enters telephony-service configuration mode.

or

Enters ephone configuration mode.

Step 4

reset { all [ time-interval] | cancel | mac-address mac-address | sequence-all} or reset

Example:

Router(config-telephony)# reset all
or 
Router(config-ephone)# reset

Performs a complete reboot of the specified or all phones running SCCP, including contacting the DHCP and TFTP servers for the latest configuration information.

or

Performs a complete reboot of the individual SCCP phone being configured.

Step 5

end

Example:

Router(config-telephony)# end
or 
Router(config-ephone)# end

Returns to privileged EXEC mode.

Use the restart Command on SCCP Phones

To fast reboot and reregister one or more SCCP phones, perform the following steps.

Before you begin

  • Phones to be rebooted are connected to the Cisco Unified CME router.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. telephony-service or ephone ephone-tag
  4. restart { all [ time-interval] | mac-address} or restart
  5. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3

telephony-service or ephone ephone-tag

Example:


Router(config)# telephony-service
or
Router(config)# ephone 1

Enters telephony-service configuration mode.

or

Enters ephone configuration mode.

Step 4

restart { all [ time-interval] | mac-address} or restart

Example:

Router(config-telephony)# restart all
or 
Router(config-ephone)# restart

Performs a fast reboot of the specified phone or all phones running SCCP associated with this Cisco Unified CME router. Does not contact the DHCP server for updated information.

or

Performs a fast reboot of the individual SCCP phone being configured.

Step 5

end

Example:

Router(config-ephone)# end

Returns to privileged EXEC mode.

Reset a Session Between a TAPI Application and an SCCP Phone

To clear a TAPI session that is in a frozen state or out of synchronization, perform the following steps.

Before you begin

  • Cisco Unified CME 7.0(1) or a later version

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. ephone phone-tag
  4. reset tapi
  5. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3

ephone phone-tag

Example:

Router(config)# ephone 36

Enters ephone configuration mode.

  • phone-tag —Unique sequence number that identifies this ephone during configuration tasks.

Step 4

reset tapi

Example:

Router(config-ephone)# reset tapi

Resets the connection between a Telephony Application Programmer's Interface (TAPI) application and the SCCP phone.

Step 5

end

Example:

Router(config-ephone)# end

Returns to privileged EXEC mode.

Use the reset Command on SIP Phones

To reboot and reregister one or more SIP phones, including contacting the DHCP server for updated information, perform the following steps.

Before you begin

  • Cisco Unified CME 3.4 or later.

  • The mode cme command must be enabled in Cisco Unified CME.

  • Phones to be rebooted are connected to the Cisco Unified CME router.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. voice register global or voice register pool pool-tag
  4. reset
  5. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3

voice register global or voice register pool pool-tag

Example:

Router(config)# voice register global
or 
Router(config)# voice register pool 1

Enters voice register global configuration mode to set parameters for all supported SIP phones in Cisco Unified CME.

or

Enters voice register pool configuration mode to set phone-specific parameters for SIP phones

Step 4

reset

Example:

Router(config-register-global)# reset
or 
Router(config-register-pool)# reset

Performs a complete reboot of all phones connected to this router that are running SIP, including contacting the DHCP and TFTP servers for the latest configuration information.

or

Performs a complete reboot of the individual SIP phone being configured.

Step 5

end

Example:

Router(config-register-global)# end
or 
Router(config-register-pool)# end

Exits to privileged EXEC mode.

Use the restart Command on SIP Phones

To fast reboot and reregister one or more SIP phones, perform the following steps.

Before you begin

  • Cisco Unified CME 4.1 or later.

  • The mode cme command must be enabled in Cisco Unified CME.

  • Phones to be rebooted are connected to the Cisco Unified CME router.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. voice register global or voice register pool pool-tag
  4. restart
  5. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3

voice register global or voice register pool pool-tag

Example:

Router(config)# voice register global
or 
Router(config)# voice register pool 1

Enters voice register global configuration mode to set parameters for all supported SIP phones in Cisco Unified CME.

or

Enters voice register pool configuration mode to set phone-specific parameters for SIP phones.

Step 4

restart

Example:

Router(config-register-global)# restart
or 
Router(config-register-pool)# restart

Performs a fast reboot all SIP phones associated with this Cisco Unified CME router. Does not contact the DHCP server for updated information.

or

Performs a fast reboot of the individual SIP phone being configured.

Step 5

end

Example:

Router(config-register-global)# end
or 
Router(config-register-pool)# end

Exits configuration mode and enters privileged EXEC mode.

Verify Basic Call

To verify that Cisco IP phones in Cisco Unified CME can place and receive calls through the voice ports, perform the following steps.

Procedure

Step 1

Test local phone operation. Make calls between phones on the Cisco Unified CME router.

Step 2

Place a call from a phone in Cisco Unified CME to a number in the local calling area.

Step 3

Place a call to a phone in Cisco Unified CME from a phone outside this Cisco Unified CME system.

Feature Information for Reset and Restart Phones

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to https://cfnng.cisco.com/. An account on Cisco.com is not required.
Table 2. Feature Information for Reset and Restart Phones

Feature Name

Cisco Unified CME Version

Feature Information

Cisco Unified CME TAPI Enhancement

7.0(1)

Disassociates and reestablishes a TAPI session that is in a frozen state or out of synchronization by using a Cisco IOS command. This enhancement also automatically handles ephone-TAPI registration error conditions.