I usually test the POTS connectivity of my SOHO system by placing calls from my cell phone. This is the US, my POTS Telco is Verizon. All is well for the most part, except: When I hang up at the end of Asterisk, I hear some sort of sound on the cell phone which might be a “hang-up” signal from Asterisk/Zaptel, but the call does not end on the cell phone. Obviously I am trying to tune this problem out of my system. Configuration: Kernel 2.4, Asterisk 1.2.4, zaptel-1.0.10, one X100P clone.
Here’s the log from /var/log/asterisk/messages.
Mar 12 22:18:47 VERBOSE logger.c: – SIP/JP-O-368f is ringing
Mar 12 22:18:54 VERBOSE logger.c: – SIP/JP-O-368f answered Zap/1-1
Mar 12 22:19:22 VERBOSE logger.c: == Spawn extension (macro-stdexten, s, 1) exited non-zero on ‘Zap/1-1’ in macro 'stdexten’
Mar 12 22:19:22 VERBOSE logger.c: == Spawn extension (incoming, s, 3) exited non-zero on 'Zap/1-1’
Mar 12 22:19:22 VERBOSE logger.c: – Hungup ‘Zap/1-1’
I am under the impression that zaptel is trying to send some form of hangup signal through to Verizon, but for some reason that does not propagate to my cell phone as such. I’m not going to change Verizon (;->), so I am left with trying to tune the system. I had this problem with other configurations on my machine as well: Asterisk 1.0.9/Zaptel 1.0.9, Asterisk 1.2.4/Zaptel 1.2.3.
I experimented by raising txgain from 0db to 3db. No difference with respect to the problem so I went back to 0. Question: I have no idea what else to try, anybody know a few touchpoints to check or try? Thanks in advance.