[Asterisk-Users] Register redirect

[tim panton]

On 19 Nov 2005, at 10:48, Matt Riddell wrote:

> tim panton wrote:
>>
>> On 19 Nov 2005, at 03:07, Matt Riddell wrote:
>>
>>> Marc Storck wrote:
>>>
>>>> Hello,
>>>>
>>>> I would like to know if there is a way in IAX2 and SIP to tell  
>>>> a  client
>>>> to register at a different server.
>>>>
>>>> For example:
>>>>
>>>> Client tries to register at server B but server B answers with   
>>>> some
>>>> sort
>>>> of redirect to tell the client to register at server C. The  
>>>> client  then
>>>> tries to register with Server C.
>>>
>>>
>>> No, but wouldn't it be great!
>>>
>>
>> Ok, let's persue this a bit more. How would we want it to work?
>> (I might be interested in implementing it)
>>
>> At the IAX level it looks pretty easy, just add an
>> APPARENT ADDR IE to the REGREJ packet (it is already in REGACK).
>> The Address would be that of the 'advisory reg server' that should be
>> tried next.
>> The cause code IE could be  "Resource unavailable, unspecified".
>>
>> How would the asterisk server decide that now was the moment
>> to send redirects ?
>
> You could do it based on the new max load/max calls values
>
>> What would the config look like?
>
> you could just specify a regrej dest for each acct and allow load  
> etc to
> control it.

For each account ? I thought of it as more of a per-server thing,
in a load-balance sort of way.

You would probably want to turn it around as fast as possible (your
load being high and all), so it would be best to avoid having to lookup
the account before sending the reject.