[asterisk-users] Dropped calls when all DAHDI lines in use

John Novack jnovack at comcast.net
Tue Oct 9 09:40:25 CDT 2018

Andrew Martin wrote:
> ----- Original Message -----
>> From: "John Novack SCII_U" <jnovack at comcast.net>
>> To: "Asterisk Users Mailing List, Non-Commercial Discussion" <asterisk-users at lists.digium.com>, "Andrew Martin"
>> <amartin at xes-inc.com>
>> Sent: Monday, October 8, 2018 4:29:41 PM
>> Subject: Re: [asterisk-users] Dropped calls when all DAHDI lines in use
>> Have you given any thought to moving to at least a current supported version 13?
>> Asterisk 11 has been EOL for some time now
>> I doubt you will get a resolution to a version no longer supported.
>> Moving to the latest version 13 should be relatively quick and painless, and if
>> the issue persists you might find more assistance.
>> John Novack
>> Andrew Martin wrote:
>>> Hello,
>>> I am running Asterisk 11.17 with DAHDI 2.9.0 and an OpenVox A800P with 8x analog
>>> POTS lines coming into my Asterisk server from the phone company. Internally, I
>>> have about 180 SIP clients defined in sip.conf. What appears to be happening is
>>> that if existing calls are consuming all 8 external lines and a new SIP client
>>> attempts to make a call, an existing call gets dropped. The asterisk log simply
>>> shows this as a normal hangup, so I am not able to easily distinguish between a
>>> normal hangup and this type of dropped call. In testing, I am able to get a new
>>> SIP client to report "service unavailable" when all 8 lines are consumed, yet
>>> still drops are reported.
>>> I have been unable to find any configuration settings pertaining to prioritizing
>>> existing calls over new calls. What else can I look for to attempt to debug and
>>> fix this so that existing calls are not dropped?
>>> Thanks,
>>> Andrew
>> --
>> Dog is my Co-Pilot
> John,
> Thanks for the reply. Yes, I am planning on moving to version 13 but need to find a
> solution in the interim. If there are any configuration options that pertain to
> which actions to take with existing calls when new calls come in, I think it is likely
> that they would be shared between both versions (and I want to make sure I have the
> correct settings when I switch to version 13 too). Can you advise on any tunables
> related to handling existing vs new calls?
> Thanks,
> Andrew
I really can't help with your existing issue(s)
I suggest you make the switch to the latest version 13, which should go fairly smoothly, and you may find that you no longer have an issue.



Dog is my Co-pilot

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