asterisk users - Mar 2007 - hanging an asterisk box off of a PBX analog extension

Wanting to connect my asterisk box off of 2 unused analog extensions on
the non* PBX system.  
 
Can I bring those lines in to * on XP100 FXO cards? 
Any special wiring/open loop issues to watch for?
 
The desired config is inbound PRI -> non* PBX, attendant picks up and if
caller wants services on * box then xfers call to one of the analog
extensions where * picks up and handles call from that point fwd till
hang up.  on hang up analog PBX extension becomes available again.
 
Currently digging thru content at voip-info.org - it's going to be a
long day...
 
md
 
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On 3/3/07, Mike D'Ambrogia <miked@jamagination.com>
wrote:
>
> Wanting to connect my asterisk box off of 2 unused analog extensions on the
> non* PBX system.
>
Sounds workable.

On Sat, 3 Mar 2007, Mike D'Ambrogia wrote:
> Wanting to connect my asterisk box off of 2 unused analog extensions on
> the non* PBX system.
>
> Can I bring those lines in to * on XP100 FXO cards?
> Any special wiring/open loop issues to watch for?
You might be better off with one TDM400P card with the right modules than 
2 XP100's (or 1 Sangoma card) All to do with interrupt sharing concerns...
> The desired config is inbound PRI -> non* PBX, attendant picks up and if
> caller wants services on * box then xfers call to one of the analog
> extensions where * picks up and handles call from that point fwd till
> hang up.  on hang up analog PBX extension becomes available again.
>
> Currently digging thru content at voip-info.org - it's going to be a
> long day...
There should be no "show stoppers" with what you want to do - just
treat
the lines from the non * PBX as POTS lines from a remote telephone 
exchange and you'll be fine.

Gordon