I'm having an issue where DTMF isn't always being transmitted in realtime. It seems like there can be a pause and then a bunch of tones sent all at once - very fast. We have not made any changes to server or gateway settings recently.
I'm running two CallManagers (Pub & Sub) v126.96.36.199900-3 and using 7940 phones running v8.1(2). The gateway is a 2821 running
c2800nm-spservicesk9-mz.124-20.T. We have one PRI for local and outbound toll free. We also have two voice T1s for LD and inbound toll free.