Cisco Voice URL Voice Routing dial-peer

Requirement

The issue arises when the customer wanted to “share” the number across two different voice systems, such as CUCM and Teams. There are multiple ways to integrate 2 systems under the same range, but it becomes challenging when users want to keep their original numbers, while some of them will stay on CUCM, some on Microsoft Teams. This example here is to use Cisco CUBE Voice Router to handle the voice routing, and calls are routed based on the destination number listed in the URL. Since the “most specific wins” rule applies in the Voice Routing world as well, this solution will fit our purpose just fine.

Environment

1. 1x Cisco CUBE Voice Router with AX license
2. Microsoft Teams is configured with Direct Routing using Audiocodes SBC

Solution

1. Create new E164 pattern map

conf t
voice class e164-pattern-map 80
 url http://172.30.19.3/teams.txt

2. Add a needed translation rule

voice translation-rule 80
rule 1 /^1111\(4...\)$/ /81111\1/
rule 2 /^2222\(4...\)$/ /82222\1/

3. Create the Translation profile

voice translation-profile To_Teams_Numbers
translate called 80

4. Creating new dial-peer and integrating all together

dial-peer voice 80 voip
 description ***to SBC_Audiocodes***
 translation-profile outgoing To_Teams_Numbers
 session protocol sipv2
 session target ipv4:172.30.19.87
 destination e164-pattern-map 80
 dtmf-relay rtp-nte
 codec g711alaw

5. load the text file in IOS to sync the number

CUBE#voice class e164-pattern-map load 80
url http://172.30.19.3/sfb.txt loaded successfully
	
All e164 patterns are valid

Useful links

https://www.cisco.com/c/en/us/support/docs/voice/dial-plan/200103-Configure-and-Troubleshoot-Multiple-Patt.html