GSM Audio Problems and

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Edwin Reed-Sanchez ereedsanchez at gmail.com
Fri Mar 24 14:49:42 UTC 2017


Dear Osmocom list

We are getting several audio problems and dropped calls.
The audio sounds like static.  We are also getting large frame correction
in the logs, and SACCH deactivation timeout.

Any ideas what could be the likely culprit?


2017-03-24_14:30:57.93546 <001a> rtp_proxy.c:295 Correcting frame
difference of 74518293571 frames
2017-03-24_14:31:11.45899 <001a> rtp_proxy.c:295 Correcting frame
difference of 1 frames
2017-03-24_14:31:11.51590 <001a> rtp_proxy.c:295 Correcting frame
difference of 2 frames
2017-03-24_14:31:11.65513 <001a> rtp_proxy.c:295 Correcting frame
difference of 1 frames

2017-03-24_14:32:08.95028 <0004> abis_rsl.c:1343 (bts=1,trx=0,ts=1,ss=0)
SACCH deactivation timeout.
2017-03-24_14:37:10.11844 <0004> abis_rsl.c:662 (bts=1,trx=0,ts=1,ss=0) is
back in operation.
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