[asterisk-users] Pass through registration / proxy

[Daniel Tryba]

On Wed, Apr 11, 2018 at 12:04:18PM -0400, Telium Technical Support wrote:
> Maybe proxy is the wrong word I chose.  Asterisk is something like a peer to
> the legacy PBX.  I thought about setting up individual SIP accounts on the
> Asterisk box to connect to the legacy PBX, or maybe a SIP trunk to the
> legacy PBX (assuming it can route calls through the SIP trunk to a peer to
> reach a phone).  The legacy PBX is a Nortel in case that matters.
> 
> I'm supposed to figure this out and present options but having trouble
> figuring out if Asterisk would be a peer, or pretend to be many sip agents
> registering on the legacy Sip pbx, etc.  I think I'm stuck at the conceptual
> level.  (Still a beginner in training - but having fun learning Asterisk)

One of my first integrations was similar but with a Siemens. Easiest
might be a SIP trunk (peer) between Asterisk/Nortel and have different
prefixes for the Norted (1xx) and Asterisk (2xx) and route these to the
other. The SIP endpoints simply register to Asterisk.