Call Routing logic through multiple paths on Cisco Unified Communication Manager.

Why route liste and route group process. More scalable when you add new gateways and new paths either through a WAN or PSTN, creates a route list for the WAN and a route list for the PSTN, the routes pattern that route the calls through the WAN will point to the the WAN’S route list, and the route pattern that routes the calls through the PSTN will point to the route list ‘s PSTN, then for each route list , associate a route group that groups the gateways, GWs of WAN and GWs of PSTN, now when you add a new route pattern through PSTN , you just to point it to the route list ‘s PSTN, instead of creating the same route pattern for each gateways’s PSTN.

Where to do digits manipulation. at different levels, From the route pattern level, route group at the route list details level, at the gateway or sip trunk via the outbound calls section, translation pattern before making a decision of call routing through a route pattern, or transformation pattern associated to the gateway or sip trunk using a partition and CSS applied after a route pattern. Now depending the direction of the calls, to the WAN, to the PSTN, through different Gateways, you have a granular choice to select the best level of manipulation.

Published by:

Redouane MEDDANE

Redouane MEDDANE is Cisco Instructor CCSI #35458, 3xCCNP Collaboration, Security and Enterprise and he a published author of some of the most important OSPF Protocol, Security and Collaboration books in the world titled OSPF Demystified With RFC, Network Security All-in-one, and Dial Plan and Call Routing Demystified on CUCM. He is also a blogger at and writes articles about collaboration and security to demystify the most complex topics. His books are known for their technical depth and accuracy especially the OSPF Demystified With RFC book, which is considered as the best OSPF book in the world and named "One of the best OSPF ebooks of all time" by BookAuthority It gives you a hint at the ability to explain complex topics with remarkable ease. He worked as a Cisco Instructor and consultant indifferent Cisco Learning Partner and awarded twice as Cisco Distinguished Instructor Award and Cisco Security Instructor Excellence Award on 2018 and 2019, and Cisco Collaboration Instructor Excellence Award on 2020. The Distinguished Instructor Award recognizes the top 5% of Cisco's most influential CCSI's who provide the highest quality training experience and demonstrate the best overall instructor performance across multiple Cisco technologie and Instructor Excellence Award recognizes the top 25% of elite CCSIs being recognized for delivering top quality training and maintaining high customer satisfaction in their field of expertise.

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