[asterisk-users] Multiple user registration ...

[Elliot Otchet]

Your first example illustrates why having multiple devices registered as the same entity is a bad idea.  It is impossible to differentiate between each device when you have multiple registering as the same entity.

My users also really like setting up rules per device/per caller.  When you treat a group of devices as one, you make it really hard to do that.

On your theoretical "virtual" devices in Asterisk - you either have a device or you don't.  The device will need to register in order to receive a call, so if you're expecting to do some magic on the registration to have a user who registers with the credentials of user 101 and be assigned to user 101-001, you'll be disappointed in the results.

Also, you'll want to steer away from using hyphens in your sip device names.  Hyphens are used in the SIP channel driver for a special purpose and using them in your device names may cause problems.  See http://www.digium.com/handbook-draft.pdf page 19 for more info.  If you're looking for a good separator, try using the underscore (_) character instead.

All that being said, if you want to register multiple devices with a single set of credentials, you might want to check out a SIP Proxy instead of Asterisk's SIP B2BUA.  Some can handle multiple registrations with a single set of credentials quite nicely.

Regards,

Elliot


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Mauro Sergio Ferreira Brasil
Sent: Wednesday, August 26, 2009 12:19 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Multiple user registration ...

Hi Elliot, and thanks for the reply.

I'm not completely sure you've considered that the SIP users registered
on all devices are the same.
Have you ?

I mean...
How will I use "Dial" command with a sequence of same devices, like:
Dial(SIP/101&SIP/101&SIP/101), for example ?

That's why we are testing the possibility to create "virtual" devices on
subsequent registrations, so we can at the end make something like:
Dial(SIP/101&SIP/101-001&SIP/101-002) if someone dials to SIP/101.
Note: SIP/101-001 and SIP/101-002 don't really exist. They will be
provided by our ARA driver to allow the multiple device ringing.

Thanks and best regards,
Mauro.



Elliot Otchet escreveu:
> Is your goal here to have multiple devices ring when an extension is dialed and the first one to answer take the call?
>
> If so, see the Dial command Dial(Technology/resource&Technology/resource&Technology/resource...[|timeout][|options][|URL]).  When multiple technology/resource entries are listed, the first one to answer will take the call.  That accomplishes your goal, if I understand you correctly.
>
> The nice part about doing it this way (with each device independently registered) is that you gain a substantial amount of granularity in controlling where calls go and you don't have to find creative ways (read: unsupported) to trick Asterisk or endpoints.
>
> If you're developing your own GUI to have people set up their devices, you can easily create a wizard that walks them through setting up each device and associating them together through either channel variables or other tables in a database.
>
> I use this methodology in 1.4 and it works quite reliably.  For a good reference, check out http://www.voip-info.org/wiki/view/Asterisk+cmd+Dial or from your Asterisk console try: 'core show application dial<enter>'
>
> It's not perfect because you can have devices that do funny things with a SIP INVITE, but in most cases it works very well.
>
> Regards,
>
> Elliot
>
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--
__At.,
   _

*Technology and Quality on Information*
Mauro Sérgio Ferreira Brasil
Coordenador de Projetos e Analista de Sistemas
+ mauro.brasil at tqi.com.br <mailto:@tqi.com.br>
: www.tqi.com.br <http://www.tqi.com.br>
( + 55 (34)3291-1700
( + 55 (34)9971-2572


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