asterisk users - Jan 2005 - Multiple gateways for same dial pattern

Hi,

How can I setup Asterisk to place calls if the same dial pattern can be
routed through several PRI gateways. I have one way that I tried:

    exten => _9737XXXX,1,Dial(SIP/${EXTEN:1}@172.17.99.5)
    exten => _9737XXXX,2,Dial(SIP/${EXTEN:1}@172.17.99.6)
    exten => _9737XXXX,3,Dial(SIP/${EXTEN:1}@172.17.99.7)
    exten => _9737XXXX,4,Congestion
    exten => _9737XXXX,102,Busy
    exten => _9737XXXX,103,Busy
    exten => _9737XXXX,104,Busy

So what happens is that if all channels on 172.17.99.5 are in use calls
are routed to 172.17.99.6 and if all channels are in use to 172.17.99.7.

One of the problems I am experiencing is that if the gateway goes away,
crashes or otherwise becomes unreachable, Asterisk tries to establish a
session for almost 60 seconds before continuing with the next gateway. If
I add a timeout to the dial command is also applies to busy signal, which
is not suitable either.

Any suggestions?

Thanks,
Adi

What do you mean "it also applies to busy signal"? Can you elaborate?

My dial-plan is something similar, I have like
BroadVoice/VoipJet/NuFone/LookieLoo and if I set them in order of my
preference, I've never had the primary fail so I've never witnessed this
60
second delay. But am interested in what solution you discover.


-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Adi Linden
Sent: Monday, January 10, 2005 3:09 PM
To: asterisk-users@lists.digium.com
Subject: [Asterisk-Users] Multiple gateways for same dial pattern

Hi,

How can I setup Asterisk to place calls if the same dial pattern can be
routed through several PRI gateways. I have one way that I tried:

    exten => _9737XXXX,1,Dial(SIP/${EXTEN:1}@172.17.99.5)
    exten => _9737XXXX,2,Dial(SIP/${EXTEN:1}@172.17.99.6)
    exten => _9737XXXX,3,Dial(SIP/${EXTEN:1}@172.17.99.7)
    exten => _9737XXXX,4,Congestion
    exten => _9737XXXX,102,Busy
    exten => _9737XXXX,103,Busy
    exten => _9737XXXX,104,Busy

So what happens is that if all channels on 172.17.99.5 are in use calls
are routed to 172.17.99.6 and if all channels are in use to 172.17.99.7.

One of the problems I am experiencing is that if the gateway goes away,
crashes or otherwise becomes unreachable, Asterisk tries to establish a
session for almost 60 seconds before continuing with the next gateway. If
I add a timeout to the dial command is also applies to busy signal, which
is not suitable either.

Any suggestions?

Thanks,
Adi
_______________________________________________
Asterisk-Users mailing list
Asterisk-Users@lists.digium.com
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users

> But this also means that after 20 seconds of ringing it goes
> on the next dialpeer. I would like to be able to set the
> timeout Asterisk wait to establish a connection, any
> connection, with the gateway to something much shorter than it is now.
I have a similar problem. I asked the same question in a message to the
list a few days ago titles "IAX outgoing redundancy". It would seem
app_dial would need to have some code added to it to have two different
kind of timeouts, one an answer timeout (which is the current timeout in
the Dial() command) and the other a "ringing" timeout (which would be
a
timeout to confirm the call has been passed on to the PSTN
successfully).

I have submitted a feature request:
http://bugs.digium.com/bug_view_page.php?bug_id=0003282

-- 
Nabeel Jafferali
tel: 416.628.9342 (toronto)
     646.225.7426 (new york)
fwd: 46990
email/msn : nabeel<at>jafferali.net

On January 10, 2005 03:09 pm, Adi Linden wrote:
> How can I setup Asterisk to place calls if the same dial pattern can be
> routed through several PRI gateways. I have one way that I tried:
>
> So what happens is that if all channels on 172.17.99.5 are in use calls
> are routed to 172.17.99.6 and if all channels are in use to 172.17.99.7.
I use this in my dialplan, as a snippet from my dialing macro:

exten => s,n,Dial(${PROVIDER1}/${ARG1},,g)
exten => s,n,Goto(dial-${DIALSTATUS},1)

exten => dial-CANCEL,1,Hangup
exten => dial-ANSWER,1,Hangup
exten => dial-NOANSWER,1,Hangup
exten => dial-BUSY,1,Busy
exten => dial-CONGESTION,1,Congestion
exten => dial-CHANUNAVAIL,1,Macro(dial-provider2,${ARG1})

dial-provider2's dialplan looks similar but will fall through to the next 
provider, and so on.  Works and is next to instantaneous on PRI and IAX2 if 
qualify is set.

With some more magic and maybe some database interaction you can have it fully 
dynamic and fall through to any number of levels you want.

-A.