asterisk users - Jul 2010 - How to extract channel-id of a user or peer

Hi,

my question is how can i get channel-id of a user or peer. I tried using
ChanIsAvail(username). this works correctly when user and asterisk are on
Local LAN. But my asterisk server is on public ip and users are behind nat,
and so this method says unknow host when used on public asterisk server.

I also tried built-in variable ${CHANNEL}, but this returns the channel-id
of the calling channel. but i want channel-id of called user.

can anyone help what can i do.

best regards,

Nasir Javaid
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From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Nasir Javaid
Subject: [asterisk-users] How to extract channel-id of a user or peer

my question is how can i get channel-id of a user or peer. I tried using
ChanIsAvail(username). this works correctly when user and asterisk are on
Local LAN. But my asterisk server is on public ip and users are behind nat,
and so this method says unknow host when used on public asterisk server.
I also tried built-in variable ${CHANNEL}, but this returns the channel-id
of the calling channel. but i want channel-id of called user.



perhaps ${CALLERID(DNID)}

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On Thu, Jul 29, 2010 at 10:37 AM, Danny Nicholas <danny at debsinc.com>
wrote:
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Nasir
Javaid
> Subject: [asterisk-users] How to extract channel-id of a user or peer
>
> my question is how can i get channel-id of a user or peer. I tried using
> ChanIsAvail(username). this works correctly when user and asterisk are on
> Local LAN. But my asterisk server is on public ip and users are behind nat,
> and so this method says unknow host when used on public asterisk server.
> I also tried built-in variable ${CHANNEL}, but this returns the channel-id
> of the calling channel. but i want channel-id of called user.
>
> perhaps ${CALLERID(DNID)}
>
> --
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${BRIDGEPEER}  is probably a good way to do what you want.. if Channel
A calls Channel B, and you want Channel A to "get" the channelID of
Channel B, as long as the two channels are bridged, ${BRIDGEPEER} will
do what you want

Hi all,

I am wondering if the Clustering concept described in Leif Madsens presentation

http://comunidad.asterisk-es.org/documentos/astricon2008/why-cluster-an-introduction-to-asterisk-clustering-and-database-integration-astricon-2008.pdf


is still up to date or if there are newer or improved features available with
1.6 (or 1.8) to build an easy scalable and highly available Asterisk
infrastructure?

Maybe someone knows of configuration examples or howtos for building a HA
cluster with the most actual features?

Especially the database setup with several nodes using the same database sounds
very interesting and also DUNDi for loadbalancing and efficient routing.

We would need a HA infrastructure covering a headquarter with thousands of users
and several branch offices, some with just a handful of users and others with up
to 500 users. Asterisk needs to interconnect with some local hard PBX (Siemens
Hipath) and within each other.

I am actually trying to figure out a setup that would fit that needs.

Any input of links to further documentation or your "real life
experiences" with a clustered setup is very welcome.

Thanks in advance.
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> No, not until Microsoft builds a compatible soft phone. Microsoft

> built software that only speaks SIP over TCP. Most SIP stacks work
>over RTP.


I suspect you meant UDP, not RTP.  They use TCP or UDP for SIP signaling and

RTP for the actual voice traffic.





-- 

This is what i thought. MS uses TCP or TLS for signaling and RTP for voice.
So in a perfect world it could work as from 1.6 Asterisk supports TCP.
But if it works in real world? Thats the question.

 
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