[asterisk-users] T1 Passthrough

[Forrest Beck]

I want to setup a asterisk server with two T1 spans (two TE110P
cards).  The server will have one card connected to the PRI and the
other will connect to our Norstar Meridian ICS system.  I want to have
a very simple dial plan for the context that the PRI card will be
assigned to something like this.  Note that our telecom provider sends
final three digits of the phone number:

SPAN 1
Channels 1-23
g1
context: pri_incoming

SPAN 2
Channels 25-48
g2
context: norstar_ics

[pri_incoming]
exten => _XXX,1,Dial,ZAP/g2/${EXTEN}

My questions are:

Will I need to set the callerid before routing to the next span, or
will the three digits remain intact.?
and
Has anyone tried this? and if so do you forsee any problems i will run into?

This is all theroey in my head right now, since I am awaiting the
second cards arrival.

Thanks.