Thursday, September 26, 2013

SIP: Anatomy Of The Registration Process For A Valcom Paging 801 Unit To A Cisco CallManager (CUCM)

This is pretty cool stuff to me.  Im learning more about SIP these days and so as I went to troubleshoot a paging problem at one of my customers, I decided to fix the problem first, then do a packet capture of the registration process from startup of the valcom unit.  Below is what I captured, using Wireshark.

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