Cisco Cisco Expressway
Appendix 1: Federation
This section describes how to configure Expressway to provide IM, Presence, audio and video
interoperability between Lync 2010/2013 and Cisco infrastructure and Cisco Jabber for the purpose of
migrating to Cisco Jabber.
interoperability between Lync 2010/2013 and Cisco infrastructure and Cisco Jabber for the purpose of
migrating to Cisco Jabber.
Note: The federation deployment discussed in this section has been tested at limited scale for the purpose of
migration, and is therefore not supported as a permanent deployment in a production environment.
migration, and is therefore not supported as a permanent deployment in a production environment.
Partitioned Intra-Domain Federation
Partitioned Intra-Domain Federation is the sharing of enterprise Instant Messaging (IM), Presence, audio,
and video between Unified Communications systems within a single presence / SIP domain. This model is
used here as a migration tool from Microsoft Lync to Cisco infrastructure and Cisco Jabber.
and video between Unified Communications systems within a single presence / SIP domain. This model is
used here as a migration tool from Microsoft Lync to Cisco infrastructure and Cisco Jabber.
Partitioned Inter-Domain Federation
Partitioned Inter-Domain Federation is the sharing of enterprise Instant Messaging (IM), Presence, audio,
and video between Unified Communications systems deployed with different domains and subdomains. This
model is also used here as an aid in migrating from Microsoft Lync to Cisco infrastructure and Cisco Jabber.
and video between Unified Communications systems deployed with different domains and subdomains. This
model is also used here as an aid in migrating from Microsoft Lync to Cisco infrastructure and Cisco Jabber.
Solution overview
This solution requires a directory Expressway that uses CPL to split traffic coming from Lync. The directory
Expressway routes audio / video traffic to the “Lync gateway” Expressway, and routes IM&P traffic to the
Unified CM IM&P node, as shown in the following diagram:
Expressway routes audio / video traffic to the “Lync gateway” Expressway, and routes IM&P traffic to the
Unified CM IM&P node, as shown in the following diagram:
The IM&P and audio / video (AV) signaling flows are as follows:
1. A Lync user starts either a call or an IM session.
2. The Lync Front End routes it to the directory Expressway.
Microsoft Lync and Cisco Expressway Deployment Guide (X8.5)
Page 51 of 71
Appendix 1: Federation