[Asterisk-Users] Can not dial more then 23 calls

[Eric Wieling aka ManxPower]

Pudenz, Duane wrote:
> We are testing our Asterisk server prior to deployment.  The server has
> a 4 port T1 Digium adapter (WCT4XXP) with 3 Long Distance (LD) T1s and
> one PRI for local calls.
> 
> We are using sipp from two different stations routing a test number out
> the LD lines and another test number out the PRI line.
> 
> We can not get more then 23 total active calls to connect to the test
> numbers, the test numbers terminate to another PBX that we can monitor.
> We have dialed out using cell phones to this other PBX while the test is
> happening and it connects, meaning it has more then 23 active calls on
> it.
> 
> If we place more then 23 calls then it seems to 'queue' the extra calls,
> though not all of the extra calls complete after we stop adding new
> calls.  They seem to get stuck in a queue or lost.  We will send 200
> calls through the Asterisk server and all but about 20 do eventually
> complete.  Those 20 or so are stuck as Asterisk thinks the channels are
> busy with the calls when in fact there are no 'real' calls on the
> server.
> 
> We can send 30 calls through the LD or PRI and only 23 are actually
> connected at a time.  We can send 30 calls to both LD and PRI at the
> same time and still only a mixture of 23 calls are actually active at
> one time.
> 
> So our issue seems to be located in our Asterisk server.  Is there a way
> to limit or throttle an Asterisk server so that it will not place more
> then 'x' calls?  

That is the value of ${DIALSTATUS} or ${HANGUPCAUSE} for the failed calls?