I had very mysterious hangups of PSTN outbound calls which I traced
to zapata.conf. I had increased rx_gain = 10 and tx_gain = 10
because volume was always low because Polycom phone was always
resetting the volume. Anyway, I patched my sip.cfg for Polycom so my
volume would stay at the us
Hello, I have started having a strange problem.
Asterisk is connected via 4 analog lines to PSTN and
we have SIP phones internally. All was working fine
but recently each time a user calls from PSTN and when
he is leaving a voicemail for someone, the caller gets
disconnected after 30 secs. We have
