Cisco CME dial-peer samples and Tips

 

Notes

Router A (CME 7.1)
Serial 1/0 – 12.1.1.1
Fa 0/0 – 10.1.1.1
FXS 0/0/1 – x1111
 

Router B (CME 7.1)
Serial 1/0 – 12.1.1.2
Fa 0/0 – 20.1.1.1
FXS 0/0/1 – x2222
 

 

1. Basic

Router A

Cisco(config)# dial-peer voice 1111 POTS
Cisco(config-dial-peer)# destination-pattern 1111
Cisco(config-dial-peer)# Port 0/0/1
Cisco(config)# dial-peer voice 2222 VOIP
Cisco(config-dial-peer)# destination-pattern 2222
Cisco(config-dial-peer)# session target ipv4:12.1.1.2
 

Router B

Cisco(config)# dial-peer voice 2222 POTS
Cisco(config-dial-peer)# destination-pattern 2222
Cisco(config-dial-peer)# Port 0/0/1
Cisco(config)# dial-peer voice 1111 VOIP
Cisco(config-dial-peer)# destination-pattern 1111
Cisco(config-dial-peer)# session target ipv4:12.1.1.1

 

 

2. Incoming dial-peer for all

 

dial-peer voice 1 voip
  incoming called-number .
  port 0/0/0:21 <– PSTN link

 

* It might cause two stage dialing meaning router picked a call and make a dial-tone. To prevent this add below command

direct-inward-dial
 

 

3. Forwarding digit

– On POTS line, only matched digits (wildcard) are forwarded by default. So, make sure any necessary digits should be preserved. 

 

dial-peer voice 2 pots
  destination-pattern 9 [2-9]…….
  port 0/2/1:11
  forward-digits 8  <– I will send only 8 digits. (actually in this case without forward-digits command still 8 digits will be sent.

 

 

 

 

 

4. Debug and Tips

 

7-1. POTS dialing test

debug isdn q931

 

 

 

* Before Debug…. use below

conf t
service timestamps debug datetime local msec
service timestamps log datetime local msec
service sequence
no logging console
no logging monitor
no logging rate-limit
no logging queue-limit
logging buffer 3000000 debug