I have a DTMF problem from a number of CME's to our SIP Service Provider, basically our SP does not see the DTMF digits. When I do a debug from a CME I see the digits being passed. The Voice call is sent to a our SP via a Cisco 3845 which is acting as a GW to the SIP environment. When I do a debug on our GW Router I do not see the digits, but I'm not sure if I should as the Voice is set to Flow-Through. I've tried every DTMF relay setup between the CME and the GW Router to no avail.
i got our SIP SP to add G711 on their side and now it works. Does DTMF on Cisco IP Phones only work if the codec is g711.
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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
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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 ...