Cisco Cisco Expressway

Cisco

Contents

Introduction

Objectives and intended audience

Deployment scenario

Clustered “Lync gateway” Expressway

Why add a “Lync gateway” Expressway?

Features and capabilities

Summary of configuration objectives

Lync environments

Prerequisites prior to configuring Expressway and Lync to interoperate

Check that calls between Lync clients registered on Lync Server operate as expected 13

Unified CM configuration

Enabling users for Lync

Registering Lync clients to the Lync Server

Lync client configuration

Testing the configuration

Enabling endpoints registered on the video network to call clients registered on Lync 17

Video network: Unified CM configuration

Configuring the SIP Profile for Expressway

Configuring the region with an appropriate session bit rate for video calls

Configuring the SIP Trunk security profile

Configuring the SIP Trunk device

Configuring the clusterwide domain enterprise parameters

Allowing dialing to Expressway domain from Cisco phones

Checking the message size limit on Unified CM

"Lync gateway" Expressway configuration (part 1)

"Lync gateway" Expressway: Load CA certificate and server certificate (if using TLS to Lync)

"Lync gateway" Expressway: Configure DNS and local hostname

"Lync gateway" Expressway: Ensure that cluster name is configured

"Lync gateway" Expressway: Configure an NTP server

"Lync gateway" Expressway: Ensure that TLS is enabled in SIP configuration

Lync Server configuration

Trust a "Lync gateway" Expressway

Configure Lync Server media encryption capabilities

"Lync gateway" Expressway configuration (part 2)

Configure the B2BUA on the "Lync gateway" Expressway

Set up a search rule to route calls to the Lync domain to Lync

Set up search rules to route calls to any other domains supported on Lync (but not in the video
network) to Lync

Testing the configuration

Enabling Lync clients registered on Lync Server to call endpoints registered on the
video network

“Lync gateway” Expressway configuration

Configuring the B2BUA trusted hosts on the “Lync gateway” Expressway

Configuring the “Lync gateway” Expressway with a neighbor zone that contains the video network

Creating a search rule to route calls to the Unified CM neighbor zone

Microsoft Lync and Cisco Expressway Deployment Guide (X8.2)

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