I have the following pbx setup: asterisk 1.2.9.1, IVR setup, Sangoma
A104D PRI card with HW echo cancel, hw dtmf detect. When calling inbound
(from a cell phone or wired home phone) I can get the pbx to recognize
the digits I type in for my extensions 100% of the time. However, when
dialing inbound from a cordless home phone, the pbx drops the first
digit or the first two digits (eg. I dial "1201" but the asterisk
monitor indicates that only "201" or "01" gets detected). This is more
acute when the Background voice has speech going (not pausing) but less
so when the Background voice has pauses (ie. if I dial digits at the
pause at the end of the Backround voice's sentence, I have a better
chance of getting my digits recognized). Outbound digits seem to be
recognized (when inside operators dial to external IVR systems). Dial
plan is pretty standard, starts like this:
exten => 6100,1,Answer
exten => 6100,2,Wait(1)
exten => 6100,3,Background(mainmenu)
exten => 6100,4,WaitExten(${WAITEXTEN_TIME})
... etc
On zapata.conf, current rxgain/txgain settings are 0.0. I've messed with
many combinations of gain parameters both positive and negative. I had
better results when I had positive rxgain value of 16 and negative
txgain value of -8. But my customer reported dropped calls, so I quickly
set back to 0.0/0.0.
Per Sangoma tech support recommmendation, I also turned OFF the HW echo
canceller in the wanpipe congig files. This had no effect. I am on
latest Sangoma beta4-2.3.4, btw.
Has anyone usnig Sangoma A104D experienced this issue, and is there a
way to get rid of it? If I cannot find the proper solution, I will
likely swap out and try new Digium TE212P as replacement. I have
reported to Sangoma that this is occurring on another pbx installation
as well with the same card.
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