[Asterisk-Users] Maximum retries exceeded on call/phantom calls?

[Oscar Carriles]

I am confused due a side effect produced in my * installation.
It consists of 1 Sangoma A101 E1/lSDN PRI card connected to Telmex
service
16 analog phones thru SIP enabled SP5004 Micronet gateways & 4 SIP hard
phones.
Everything in a local network/no natting.
We are processing nearly 2000 calls/day outgoing/incoming
Everithing seems to be ok but after an hour or so I begin to see the
message “Maximum retries exceeded on call...”
On my logging console. This message continues to appear  with a climbing
frequency on different call ids till the entire system begin to
unregister my sip clients. Asterisk needs to be restarted as if it has
suffered  “a DOS attack”.

Prior to this situation arrives, I notice that “phantom calls” rings
phones but nobody there---
After a couple of weeks of debugging I notice that this situation could
be related to 3-way calling from the operator to other sip extensions.
This tranferred calls seems not to die after the normal operation of the
feature (flash/get tone/dial extension/speak with employee/hangup). I
have all my sip gateways set to support transfer, so SIP attended
transfer is done by the gateway and by zapata at the same time producing
the side effect?

Waiting some feedback
OCA 

 


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Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.2/251 - Release Date:
04/02/2006