====== 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
<code>
telephony-service
  auto-reg-ephone
  auto assign <start-dn-tag> to <end-dn-tag> [type phone-type] [cfw <number> timeout <seconds>]
</code>

==== EPhone-DN ====
  * The DN needs to be defined as well
<code>
ephone-dn <start-dn-tag> dual-line
  number 1000
...
ephone-dn <end-dn-tag> dual-line
  number 1999
</code>

===== Debug =====
  * To show all auto registration attempt
<code>
Router# show ephone attempted-registration
</code>