We just set up a new MM 5.2 system with an audiocodes sip gateway to talk to our CM 3.1.2 8710 media server on a qsig trunk. It is really slow! So slow that transfers to voicemail hear MOH. Worse than our s3400s running MM 3.0. Has anyone else used this gateway? It there anything we can do to speed it up?
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MM 5.2 with audiocodes sip gateway
- Thread starter 9mmgeek
- Start date
I have used them and they work great. What config notes did you use to set this up with ?
Ken Means
"I find that the harder I work, the more luck I seem to have."
- Thomas Jefferson (1743-1826)
Ken Means
"I find that the harder I work, the more luck I seem to have."
- Thomas Jefferson (1743-1826)
- Thread starter
- #3
The bp set it up. Where could I find some configuration notes. I downloaded some manuals from audiocodes. Bp says abaya introduced a 2 second delay on the sip channel in mm 5.2. It takes 4 seconds formthe system to respond when I press the voicemail button on my phone.
Ken Means
"I find that the harder I work, the more luck I seem to have."
- Thomas Jefferson (1743-1826)
- Thread starter
- #5
Thanks Ken. Its a little dated but a good guide. Have you used the audio codes with MM 5.2 yet? Also, did you do any conversions where the old MM was using GSM encoding? The BP set us up with G711 because of the SIP connection and our message storage went to one fifth of what it was. Some mailboxes reported full because the COS max mailbox sizes all went down. We changed it to GSM and the recording quality has gone down. So far I only see negatives to this SIP interface in MM, nothing gained and a lot lost.
the use of G711 for SIP is independent on GSM.
G711 is the codec used for negotiation and streaming of calls to the MAS, that is when you are dialing the MAS to retrieve a message etc, you are talking G711 to the MAS.
GSM is the storage codec used to save messages on to the MSS.
You are correct that the GSM will result in a lower quality recording, where are G711 will give you a better quality, which of course takes more storage on the MSS
If your old system was using GSM, i find it strange that you would have noted any degradation in the GSM of the new system, unless you are perhaps referring to messages that were migrated to the new system that may have been converted from GSM to G711 as part of the restore?
G711 is the codec used for negotiation and streaming of calls to the MAS, that is when you are dialing the MAS to retrieve a message etc, you are talking G711 to the MAS.
GSM is the storage codec used to save messages on to the MSS.
You are correct that the GSM will result in a lower quality recording, where are G711 will give you a better quality, which of course takes more storage on the MSS
If your old system was using GSM, i find it strange that you would have noted any degradation in the GSM of the new system, unless you are perhaps referring to messages that were migrated to the new system that may have been converted from GSM to G711 as part of the restore?
- Thread starter
- #7
The problem is that apparently SIP does compression and I guess it cannot be turned off. Wonderful technology. So when the signal gets to MM and is being recorded they don't want to compress it a second time so they say to use G711 in the audio encoding format (how it is recorded). Without the compression the user's 64mb max mailbox size only holds one fifth of what it does with GSM encoding. If you use GSM you get distorted recordings because of the double compression. Sounds like someone didn't think this through when they jumped to the new technology.
All of the old messages that were moved to the new system were encoded in GSM and sound ok. New ones do not.
All of the old messages that were moved to the new system were encoded in GSM and sound ok. New ones do not.
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