Auto Registration
Configuration
Telephony Service
Enable by default
To auto assign DN
All DN must be of the same type either single or dual-line but not mix
The type if not specified will catch all
cfw provide the Call Forward Busy Number and timeout value
telephony-service
auto-reg-ephone
auto assign <start-dn-tag> to <end-dn-tag> [type phone-type] [cfw <number> timeout <seconds>]
EPhone-DN
ephone-dn <start-dn-tag> dual-line
number 1000
...
ephone-dn <end-dn-tag> dual-line
number 1999
Debug
Router# show ephone attempted-registration