http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/command/reference/cme_r1ht.html#wp1013890
Note that when resetting or restarting phones, the phone will not be rebooted immediately if it is currently in use. Instead, it will be rebooted once the phone call is over. Thus, resetting or restarting should both be safe to do during business hours as long as call traffic is not high at that point in time.
reset (ephone)
To perform a complete reboot of a single phone associated with a Cisco CallManager Express (Cisco CME) router, use the reset command in ephone configuration mode.
reset
Syntax Description
This command has no arguments or keywords.
Command Default
No reset is performed.
Command Modes
Ephone configuration (config-ephone)
Command History
|
Cisco IOS Release
|
Cisco Product
|
Modification
|
|---|---|---|
|
12.1(5)YD |
Cisco ITS 1.0 |
This command was introduced |
|
12.2(8)T |
Cisco ITS 2.0 |
This command was integrated into Cisco IOS Release 12.2(8)T |
Usage Guidelines
After you update information for one or more phones associated with a Cisco CME router, the phone or phones must be rebooted. There are two commands to reboot the phones: reset and restart. The reset command performs a “hard” reboot similar to a power-off-power-on sequence. It reboots the phone and contacts the Dynamic Host Configuration Protocol (DHCP) server and the TFTP server to update from their information as well. The restart command performs a “soft” reboot by simply rebooting the phone without contacting the DHCP and TFTP servers. The reset command takes significantly longer to process than the restart command when you are updating multiple phones, but it must be used after updating phone firmware, user locale, network locale, or URL parameters. For simple button, line, or speed-dial changes, you can use the restart command.
Use the reset (ephone) command to perform a complete reboot of an IP phone when you are in ephone configuration mode. This command has the same effect as a reset (telephony-service) command that is used to reset a single phone.
This command has a no form, but the no form has no effect.
Examples
The following example resets the SCCP phone with a phone-tag of 1:
Router(config)# ephone 1
Router(config-ephone)# reset
Related Commands
reset (telephony-service)
To perform a complete reboot of one or all phones associated with a Cisco CallManager Express (Cisco CME) router, use the reset command in telephony-service configuration mode. To interrupt and cancel a sequential reset cycle, use the no form of the command with the sequence-all keyword.
reset {all [time-interval] | cancel | mac-address | sequence-all}
no reset {all [time-interval] | cancel | mac-address | sequence-all}
Syntax Description
Command Default
No reset is performed.
Command Modes
Telephony-service configuration (config-telephony)
Command History
Usage Guidelines
After you update information for one or more phones associated with a Cisco CME router, the phone or phones must be rebooted using either the reset command or the restart command. The reset command performs a “hard” reboot similar to a power-off-power-on sequence and contacts the Dynamic Host Configuration Protocol (DHCP) server and the TFTP server for updated information as well. The restart command performs a “soft” reboot by simply rebooting the phone without contacting the DHCP and TFTP servers. The reset command takes significantly longer to process than the restart command when you are updating multiple phones, but it must be used after you make changes to phone firmware, user locale, network locale, or URL parameters. For simple button, line, or speed-dial changes, you can use the restart command.
When you use the reset command, the default time interval of 15 seconds is recommended so that phone reset operations are staggered in order to avoid all phones attempting to access router system resources at the same time. A shorter interval may be used on systems with only a small number of phones or for cases where a simple reset of the phones is desired that does not result in the phones downloading updates to the phone firmware (using the router’s TFTP service).
When you use the reset sequence-all command, the router waits for one phone to complete its reset and reregister before starting to reset the next phone. The delay provided by this command prevents multiple phones from attempting to access the TFTP server simultaneously and therefore failing to reset properly. Each reset operation can take several minutes when you use this command. There is a reset timeout of 4 minutes, after which the router stops waiting for the currently registering phone to complete registration and starts to reset the next phone.
If the router configuration is changed so that the eXtensible Markup Language (XML) configuration files for the phones are modified (changes are made to user locale, network locale, or phone firmware), then whenever you use the reset all or restart all command, the router automatically executes the reset sequence-all command instead. The reset sequence-all command resets phones one at a time in order to prevent multiple phones from trying to contact the TFTP server simultaneously. This one-at-a-time sequencing can take a long time if there are many phones. To avoid this automatic behavior, use the reset all time-interval or the restart all time-interval with an explicit argument that is not equal to the default 15-second time interval; for example, set a time interval of 14 seconds. If a reset sequence-all command has been started in error, use the reset cancel command to interrupt and cancel the sequence of resets.
The restart command allows the system to perform quick phone resets in which only the button template, line information, and speed-dial information is updated. See the documentation for the restart command for more information.
The no form of this command has an effect only when used with the all or sequence-all keyword, when it interrupts and cancels the sequential resetting of phones.
Examples
The following example resets all IP phones served by the Cisco CME router:
Router(config)# telephony-service
Router(config-telephony)# reset all
The following example resets the Cisco IP phone with the MAC address CFBA.321B.96FA:
Router(config)# telephony-service
Router(config-telephony)# reset CFBA.321B.96FA
The following example resets all IP phones in sequential, not-overlapping order:
Router(config)# telephony-service
Router(config-telephony)# reset sequence-all