[asterisk-users] Dialing a SIP URI with an ";ext=" parameter

[Leandro Dardini]

I am going to try a Lync server/asterisk integration, so I really
appreciate!

Leandro


2014/1/21 Lincoln King-Cliby <lincoln at controlworks.com>

> Ok, so now I just feel kind of stupid. After I got home I decided to play
> with this a little more.
>
>
>
> After far too long I realized that part of the issue was Asterisk parsing
> the ; as a beginning of a comment (hindsight=duh).
>
> A little bit more experimenting and (though I could swear I tried this
> before) replacing the ; with \; works.
>
>
>
> That is, to dial a E.164 normalized number with an extension configured as
> tel:+14404491100;ext=1407 <+14404491100;ext=1407> with the SIP Peer for
> the Lync mediation server named “lync” the working dial() is
>
>
>
> Dial(SIP/lync/+14404491100\;ext=1407)
>
>
>
> Hope this may save someone else time down the road.
>
>
>
> --
>
> Lincoln King-Cliby, CTS, DMC-D
>
> Commercial Market Director
>
> Sr. Systems Architect | Crestron Certified Master Programmer (Silver)
>
> V: 440.449.1100 x1107 F: 440-449-1106 I: http://www.controlworks.com
>
> Crestron Services Provider
>
>
>
> *From:* asterisk-users-bounces at lists.digium.com [mailto:
> asterisk-users-bounces at lists.digium.com] *On Behalf Of *Lincoln King-Cliby
> *Sent:* Monday, January 20, 2014 5:04 PM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* [asterisk-users] Dialing a SIP URI with an ";ext=" parameter
>
>
>
> Hi All,
>
>
>
> In the midst of trying to pilot a deployment of Microsoft Lync (mainly for
> non-voice collaboration, specifically IM) and integrate it with our
> Asterisk (11.6.0 if it matters) deployment and a “everything in one place”
> tool when people are out of the office.
>
>
>
> I have everything on the voice side playing  nice from the Lync side
> (Lync->Lync, Lync->Asterisk, Lync->Asterisk->PSTN)  but I can’t get calls
> from Asterisk->Lync passing.
>
>
>
> I think the root issue is Lync demands that the “line URI” be entered in a
> E.164 normalized format, and further specifies that if an extension is
> specified it should be entered as ;ext=. So, e.g. when I have myself set up
> in LYNC my Line URI is entered as “tel:+144044911100;ext=1407<+144044911100;ext=1407>”.
>
>
>
>
> If I try feeding that into an Asterisk DIAL() using any format I can think
> of (specific examples below) the call fails and the following is logged to
> console; it looks like Asterisk is dropping the “;ext=”…
>
>   == Using SIP RTP CoS mark 5
>
>     -- Executing [1407 at yyyyyyy:1] Dial("xxxxxxxxxx", "SIP/lync/"
> +14404491100") in new stack
>
>   == Using SIP RTP CoS mark 5
>
>     -- Called SIP/lync/+14404491100
>
>     -- Got SIP response 485 "Ambiguous" back from <IP address and port of
> Lync mediation server>
>
>   == Everyone is busy/congested at this time (1:0/0/1)
>
>     -- Auto fallthrough, channel ' xxxxxxxxxx' status is 'CHANUNAVAIL'
>
>
>
> On the other hand, if I change my line URI to a “random” and unused in
> Lync E.164 number without an extension and change the DIAL() to reflect
> that number… the call succeeds, so it seems like I’ve narrowed it down to
> just needing to figure out how to properly pass the extension to Lync.
>
>
>
> The Googling I turned up didn’t seem too positive (and suggested using an
> Exchange Unified Messaging auto attendant and forcing the user to redial
> the extension once connected to the AA was the only alternative for non-DID
> users) but it seems like it should be relatively simple to bridge (what
> seems like a very small) gap.
>
>
>
> Here are the least embarrassing variations on Dial I’ve tried
>
>
>
> Dial(SIP/lync/+14404491100;ext=1407) <-- 485 Ambiguous response as above
>
> Dial(SIP/lync/"+14404491100;ext=1407") <-- 485 Ambiguous response as above
>
> Dial(“SIP/lync/+14404491100;ext=1407") <-- 485 Ambiguous response as above
>
> Dial(SIP/lync/+14404491100/1407) <-- call ‘sits there’ and multiple
> “sip_xmit of 0x7ffab40891e0 (len 841) to 0.0.5.127:5060 returned -1:
> Invalid argument” logged to console
>
>
>
>
>
> Any assistance, is as always very appreciated.
>
>
>
> Thanks!
>
>
>
> Lincoln
>
>
>
>
>
>
>
> --
>
> Lincoln King-Cliby, CTS, DMC-D
>
> Commercial Market Director
>
> Sr. Systems Architect | Crestron Certified Master Programmer (Silver)
>
> V: 440.449.1100 x1107 F: 440-449-1106 I: http://www.controlworks.com
>
> Crestron Services Provider
>
>
>
> --
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