I have a weird issue with calling from the Cisco Call Manager 4.0 over a SIP trunk to a Cisco 7040 with SIP firmware.
Weird is that I can create a call if I dial a Call Manager extension from that SIP 7940 and it works without problems,
but if I dial from a Call Manager the extension of the SIP 7940 then the Call Manager sends out an INVITE, then accepts the RINGING, but then after a call is accepted on a 7940, CCM just ignores the "SIP/2.0 200 OK" messages generated by the 7940.
If I replace the Cisco SIP 7940 with some SIP softphone then it works in both ways.
I attached a dump of SIP messages between a 3rd party SIP server and Call Manager.
The Cisco 7940 with a SIP firmware is registered to a 3rd party SIP Server.
7940 is running on P0S3-08-2-00.
BTW: If I dial that SIP phone from a Cisco 3745 voice gateway then it works.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...