asterisk users - Jul 2009 - Dropped Call Problem -- Looking for ideas and a consultant.

Hello Everyone.

We have:

Asterisk 1.4.21.2
zaptel-1.4.11
libpri-1.4.5
Sangoma A101D Connected to a PRI
Cicso 7960G phones (About 30 of them)

We have a problem with dropped calls that has going on for a long  
time.  We get up to 5 dropped calls on a bad day. They all seem to be  
incoming calls.

I have a recording of what my users report a dropped call sounds like  
right before it drops

http://www.stepawayfromthecomputer.com/drop.wav

Please have a listen to the recording and tell me what you think it  
means

I am looking for any ideas as to what I should do to track this down.  
I would love a lead on a good consultant who can help fix this.

Mark

We had the same problem using a Digium T1 card. We switched the coding to from
NI2 to 5ess and we haven't dropped a call since.
You will have to check with your service provider to see if they do 5ess.

Connor Spiess
Network Specialist


-----Original Message-----
From: Mark Engelhardt [mailto:marke at intuitiveengineering.com]
Sent: Friday, July 10, 2009 10:58 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Dropped Call Problem -- Looking for ideas and a
consultant.

Hello Everyone.

We have:

Asterisk 1.4.21.2
zaptel-1.4.11
libpri-1.4.5
Sangoma A101D Connected to a PRI
Cicso 7960G phones (About 30 of them)

We have a problem with dropped calls that has going on for a long
time.  We get up to 5 dropped calls on a bad day. They all seem to be
incoming calls.

I have a recording of what my users report a dropped call sounds like
right before it drops

http://www.stepawayfromthecomputer.com/drop.wav

Please have a listen to the recording and tell me what you think it
means

I am looking for any ideas as to what I should do to track this down.
I would love a lead on a good consultant who can help fix this.

Mark

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