UCCX version 7
CM version 7.0
H.323 gw, latest stable version of 12.4
Inbound calls to a uccx script, coming from the PSTN, DTMF fails 80% of the time.
Scenario is this: A caller on the PSTN dials an auto attendant script configured on uccx. UCCX answers and plays a prompt. At a digit collecting step, the caller enters, for example, a four digit extension. When it fails, UCCX only collects the last digit, instead of all four.
1. If I am doing a realtime debug on UCCX, the script ALWAYS collects the correct DTMF tones.
2. From an IP phone, this ALWAYS works.
1. The codec is g.711
2. The dtmf relay method is h245-signal.