VOIP DIAL PEER BETWEEN BRANCH A AND BRANCH B WHILE IN SRST MODE

[banst8801]

Hi folks,

I need some help please.
I am trying to configure voip dial peers between two branches while they are in srst mode. Both branches have connectivity through an IPsec VPN tunnel.
Branch A has an 2901 ISR router and branch B has an 2921 ISR router. In normal conditions both routers act as MGCP gateways.
_Branch A dial plan: 76[1-4]X
_Branch B dial plan: 76[5-9]X
Topology is attached.

Regarding dial-peers I configured the following but with no luck
BRANCH A ISR:

voice translation-rule 4000
rule 1 /^4\(7...$\)/ /\1/

voice translation-profile Strip4
translate called 4000

dial-peer voice 4001 voip
translation-profile outgoing Strip4
destination-pattern 4[7]...
session target ipv4:172.20.51.1
incoming called-number .T

BRANCH B ISR:

voice translation-rule 4000
rule 1 /^4\(7...$\)/ /\1/

voice translation-profile Strip4
translate called 4000

dial-peer voice 4001 voip
translation-profile outgoing Strip4
destination-pattern 4[7]...
session target ipv4:172.20.59.1
incoming called-number .T

When dialing the first digit (4) should be stripped. My config is Ok? Because when I try to call from branch A to branch B I get busy tone.

Regards,

[Chris Deren]

can you post following from each side:

"debug voice ccapi inout"

"debug voice translation" 

Are phones registered in CME with 4 digit extensions and the digit 4 is meant only as steering code to the other site?

[banst8801]

Hello Chris,

Phones are normally registered with CUCM version 10.5 at HQ. But when phones are registered to the SRST gateway I want to communicate Branch A with Branch B. This is what I am trying to do. I attach de debugs from Branch A because I only took that debugs when I was there. Now I am not at that place and it is difficult to take that debugs again.

Branch Gateways are running IOS version 15.5-3.M5.

Regards,

[Chris Deren]

What are you dialing?

According to the debug the last call was from 7624 to 47652 and used dial-peer 30 which I dont see in your snipper of config. Can you post your full config?

[banst8801]

Hello Chriss,

I was trying with this config first, (when the debug was captured):

voice translation-rule 4
rule 1 /^4/ //
voice translation-profile strip4
translate called 4

dial-peer voice 30 voip
translation-profile outgoing Strip4
destination-pattern 476..
session target ipv4:172.20.51.1
incoming called-number .T

Anyways I attach the whole config.

Also I will do a new debug as soon as possible and I'll let you know.

[banst8801]

Hello Chris,

Phones are normally registered with CUCM version 10.5 at HQ. But when phones are registered to the SRST gateway I want to communicate Branch A with Branch B. This is what I am trying to do. I attach de debugs from Branch A because I only took that debugs when I was there. Now I am not at that place and it is difficult to take that debugs again.

Branch Gateways are running IOS version 15.5-3.M5.

Regards,