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Best Practice CUCM->VCS-C->VCS-E trunk configuration for CONNECT

Justin Haaga
  • Updated

Introduction

This document outlines best practice configuration for CUCM to VCS-C to VCS-E for CONNECT optimal operation.  

Prerequisites

 

CUCM (12.5)

An example is using 5061 TLS encrypted trunks, this is recommended but a 5060 TCP can also be used.

SIP Trunk Example

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Sip Profile

Early Offer Support for voice and video calls* needs to be set to Best Effort (no MTP Inserted)

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Trunk to EXP-C

DTMF Signaling Method needs to be set to "No Preference"

 

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EXP-C

Verify Zone Profile (CUCM) set and not custom
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VCS-E

Confirm a DNS rule is setup and not using Webex PSTN paths, dedicate is OK as below

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