[VoIP] SIP error message

[Erwin Dokter]

SIP does indeed have a concept of routing, called re-invites. This is
basically how SIP forwarding works. If a number is not reachable on a node,
that node can either tell the calling node to try somewhere else, or forward
the call itself. The limit of re-invites is usually 70 hops.

The most likely cause for your error message is probably a
mis-configuration; either re-invites is set too low, or two nodes keer
forwarding to eachother, resulting in a loop.

-- 
Erwin Dokter


----- Original Message -----
> Date: Sat, 31 Mar 2007 21:00:18 -0400
> From: "Lee Spenadel" <lee at spenadel.com>
> Subject: [VoIP] SIP error message
> To: "'Voice Over IP Tandem for Analog Switches'" <voip at ckts.info>
>
> What conditions would give the SIP error message below?  I've peered and
> registered with sipphone.  In the routing world I understand hop counts
and
> when they can be exceeded.  Is this a similar concept in the SIP world?
>
>     -- Called 17474745000)@proxy01.sipphone.com
>     -- Got SIP response 483 "Too Many Hops" back from 198.65.166.131
>