[asterisk-users] Codec Negotiation

[Joshua Colp]

----- Original Message -----
From: Douglas Garstang
[mailto:dgarstang at oneeighty.com]
To: olivier.taylor at phonext.com, Asterisk
Users Mailing List - Non-Commercial Discussion
[mailto:asterisk-users at lists.digium.com]
Sent: Fri, 21 Jul 2006 16:21:15
-0300
Subject: RE: [asterisk-users] Codec Negotiation


> Well, I wish someone would tell Kevin Fleming that.
> 

So... the realtime architecture can work when shared between servers - but not all the time, and it depends on certain variables.  Multiple servers can grab the same information from the database, but it doesn't mean they will be able to contact the phone for example. This is what Kevin was talking about. If a phone is behind NAT and registers to one Asterisk machine, the device doing the NAT will setup in it's memory a mapping of the external port to the internal IP+port. Depending on the implementation and setup, only the server that the phone registered to will be able to send packets back. Thus if you have failover to another server for example, that server will not be able to contact the phone.

Like I said, there's too many variables to make it work all the time...

Now - you can pull information in order for them to be able to place calls. That should be fine.

Joshua Colp
Digium