Apparently, AS5300 with c5300-is-mz.123-19.bin IOS can not negotiate DTMF transfer mechanism:
m=audio 19034 RTP/AVP 18
When I tried to enter command "rtp payload-type nte 96" on the incoming dial-peer, I got a message "ERROR: value 96 in use!". Is there a way to make Cisco speak payload-type nte 96 to the originating provider?
The problem with DTMF transfer mechanism negotiation is even bigger than I initially considered it to be. Inband-voice becomes the negotiated DTMF relay mechanism in cases when SDP offer from the caller contains codecs 18 96 100 (18 stands for g729) and also 18 101. In these cases the SDP answer from Cisco contains only 18. Only when SDP offer contains 18 101 100, Cisco puts them in the answer too and rtp-nte becomes the negotiated DTMF relay. I would find it incredible if I were the first one to run into this sort of problem. Any suggestions how to make the gateway respect payload types 96 and 101 without 100?
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 ...
This document describe how DST changes and how time changes are
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setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...