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Cisco 3660 with a PRI talking SIP to various Asterisk boxes
(not connected, separate PBXs) using ulaw all have issues with music on
hold being choppy. Normal voice and SIP (taking a call from the PRI,
placing a call or extension to extension calls) conversations are _perfect_ with no drop outs so it’s
not a problem with the PRI or the 3660 talking to the Asterisk boxes. If
I call from my Polycom into an extension that immediately starts MusicOnHold it’s
perfect as well. However, calling into the box via the PRI and being placed
on hold the music is choppy. Also, calling into an extension that spawns
MusicOnHold immediately is choppy when it comes in via the Cisco. This happens with mpg123, madplay and I tried using the
Asterisk 1.2 native mode in musiconhold.conf: [default] mode => files directory => /var/lib/asterisk/mohmp3 random => yes Same problem with all 3. Tried converting MP3s to a pcm or ulaw file, same problem
(using lame and sox to do the conversions) It seems that this is common issue with no clear resolution. Machines are Pentium 4s 512MB or 1GB RAM. I would be
the only call on the box, no load, etc. Using ztdummy (or without, same behavior) Asterisk ver 1.2.4 on all Normal voice, IVR, play back voicemail, etc are all 100%
perfect only on MusicOnHold has this issue Polycom SIP phones or using X-Lite to test (used to make the
call into MusicOnHold or answer the call coming in via the PRI and placing on
hold) Calling in from landline or cell phone – no difference Any ideas? Bill |
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