See the image above. Notice that the VIC card is replaying the last 50 milliseconds of the tone at a decreasing level. I believe this to be a default feature in Cisco called Packet Loss concealment. It is causing me a lot of problems when sending DTMF tones in the Voice stream. I am unable to use any type of DTMF relay for my application.
I have already tried all of the echo cancel settings, decreased playout delay to 0 and there has been no change.
Does anyone have any ideas on how to turn this feature off?
Relevant info:
VIC3-2 E/M card on a Cisco 2901 Router
voice-port 0/1/0
operation 4-wire
signal lmr
