| Router(config)# telephony-service | Enters telephony-service configuration mode. |
| Router(config-telephony-service)# max-ephones 24 | Sets the maximum number of supported IP phones. |
| Router(config-telephony-service)# max-dn 48 | Sets the maximum number of extensions. |
| | NOTE: The maximum number of phones and extensions is platform and IOS version dependent. |
| Router(config-telephony-service)# load 79xx P0xxxxxxxxxx | Identifies the Cisco IP phone firmware file to be used by specific Cisco IP phones when they register. |
| Router(config-telephony-service)# ip source-address 192.168.31.1 | Identifies the IP address and port number for IP phone registration. |
| | NOTE: The default port is 2000. |
| Router(config-telephony-service)# create cnf-files | Builds the XML configuration files required for Cisco CME phones. |
| Router(config-telephony-service)# reset sequence-all | Resets all phones one at a time. |
| Router(config-telephony-service)# exit | Returns to global configuration mode. |