On Tue, 7 Dec 2004, Nick Burch wrote:

> Currently, our office has a 24 analogue extension PBX, and 2 ISDN lines
> providing it with external connectivity. We have several analogue
> extensions spare, but no capacity to add fancier connectors to link to an
> asterisk system (as most of the PBX linking guides detail). All our phones
> are bog standard analogue ones.
> 
> We'd like to use an asterisk system to allow some calls to be routed out 
> via a VoIP gateway. We'd also like to allow some inbound SIP calls to be 
> handed to the PBX.

You could put Asterisk between the old pbx and the incoming isdn lines. A 
four port isdn card would be used in the Asterisk box. This way all 
functions should be available to both the old pbx and the new Asterisk 
box.

Peter


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