[cisco-voip] Branch Office CME SIP trunk question

[Robert Kulagowski]

>> On 11/28/2011 10:22 PM, Nick atthews wrote:
>>>
>>> You could use SIP Options ping.  That would then allow you some show
>>> commands and potentially some debugs.  After you have either show
>>> commands or debugs you can them write an EEM script to detect those
>>> changes and change the system message.
>>>
>>> The tricky part is simply finding a show command and writing the EEM
>>> script to parse it.  If options ping failures send a informational
>>> error message on the screen ie. %SIP-OPTIONS-PING-FAIL or something
>>> similar it would be fairly trivial.
>>>
>>> EEM is really powerful, but tricky to learn.  There are some good
>>> guides out there though.
>>>
>>> -nick

Care to share some of them you found which were good?