VoIP connection to PABX

Question

Essentially, I'm trying to extend a analog line from a Nortel PABX across a data network to a slightly out of reach phone.
I have 2 routers (2801) equipped with FXO and FXS cards each. I want to extend a analog line (RJ11) from the PABX to the router with the FXO card and from that router to another router with a FXS card, and from there, to a POTS phone. The PABX would provide an extension to the phone, and would route calls to that extension to the connected port on the router. On the other hand, the router with the FXS card would capture whatever number the phone dials and just pass it straight alot to the PABX.
Is this possible? I've been reading reference material all week trying to figure it out.

Answer 1

Hi,
for the HQ router with 4 FXO's i have:
voice-port 0/3/0
input gain 2
output attenuation -4
timing hookflash-out 500
connection plar opx 200
impedance complex1
voice-port 0/3/1
input gain 2
output attenuation -4
timing hookflash-out 500
connection plar opx 201
impedance complex1
voice-port 0/3/2
input gain 2
output attenuation -4
timing hookflash-out 500
connection plar opx 202
impedance complex1
voice-port 0/3/3
input gain 2
output attenuation -4
cptone ZA
timing hookflash-out 500
connection plar opx 203
impedance complex2
dial-peer voice 5572 pots
destination-pattern 5572
port 0/3/0
dial-peer voice 5852 pots
destination-pattern 5852
port 0/3/1
dial-peer voice 5815 pots
destination-pattern 5815
port 0/3/2
dial-peer voice 5853 pots
destination-pattern 5853
port 0/3/3
dial-peer voice 200 voip
destination-pattern 20.
session target ipv4:10.61.156.1
incoming called-number .
dtmf-relay h245-signal
no vad
and for the remote site with 4 FXS i have:
voice-port 0/2/0
input gain 2
output attenuation -4
cptone ZA
connection plar 5572
voice-port 0/2/1
input gain 2
output attenuation -4
cptone ZA
connection plar 5852
voice-port 0/3/0
input gain 2
output attenuation -4
cptone ZA
connection plar 5815
voice-port 0/3/1
input gain 2
output attenuation -4
cptone ZA
connection plar 5853
dial-peer voice 200 pots
destination-pattern 200
port 0/2/0
dial-peer voice 201 pots
destination-pattern 201
port 0/2/1
dial-peer voice 202 pots
destination-pattern 202
port 0/3/0
dial-peer voice 203 pots
destination-pattern 203
port 0/3/1
dial-peer voice 100 voip
max-conn 4
destination-pattern 5...
session target ipv4:10.59.1.70
incoming called-number .
dtmf-relay h245-signal
no vad
Hope this helps