Were you able to get this to work using the DEES 154/154A? I have a customer using those unit on the old phone system and we are moving to Cisco. I get the main concept in how the unit works but not sure how it will detect a power failure on the Cisc...
I am having a similar issue, where not all 7841 phones will register in SRST mode. Seems random as which one will and will not, sometimes it is 19 phones another time it is 50+. Did you ever get a resolution? Regards.
David What version of CUCM are you running? If you are running version 8.6 (may be possible with earlier version not sure) or above you could create a SIP Dial Rule for the domain anothercompany.com and point that the SIP trunk to VCS. I have done th...