Cisco Cisco TelePresence Video Communication Server Expressway
Show Presence of VCS-registered
Endpoints to Lync Clients
Endpoints to Lync Clients
The VCS has a Presence application that you can use to publish the presence of VCS-registered endpoints to Lync
clients, with limitations as shown in the following table.
clients, with limitations as shown in the following table.
Note:
This option builds on the VCS and Microsoft Lync deployment described in this document, but we recommend
using Cisco Unified Communications Manager IM and Presence Service for presence and Unified CM for SIP
registrations and call control.
registrations and call control.
… to VCS
… to Lync Server
VCS to …
Full presence available
[1]
Presence = Available only
[2]
Lync Server to …
No presence information available
[3]
Full presence available
[4]
Table 12 The Presence Information Shared Between Lync and the VCS
1.
Endpoints registered to VCS Control can see the presence status of other endpoints registered to VCS
Control.
Control.
2.
Using SIP-SIMPLE, Lync Server only supports the reception of the “Available” status, so presence is limited to
"not available" or "available". "In-call" and other rich presence states are not handled. VCS only supports a
maximum of 100 subscriptions per presentity.
"not available" or "available". "In-call" and other rich presence states are not handled. VCS only supports a
maximum of 100 subscriptions per presentity.
Note:
Configure your system to register FindMe IDs to Lync Server if you want to publish “In-call” states to
3.
Lync Server does not supply presence status information about its registered endpoints using SIP-SIMPLE and
so no presence information can be supplied to endpoints registered on VCS about endpoints registered on
Lync Server.
so no presence information can be supplied to endpoints registered on VCS about endpoints registered on
Lync Server.
4.
Lync clients registered to Lync Server can see the presence status of other Lync clients registered to Lync
Server.
Server.
Enable Presence User Agent on VCS Control
We recommend that you enable the Presence Server on the VCS Control and disable it on the Gateway VCS.
We also recommend that you enable the PUA (Presence User Agent) on the VCS Control, which can generate
presence information for registered endpoints that don't generate their own presence information.
presence information for registered endpoints that don't generate their own presence information.
The PUA generates presence according to the following rules:
■
Presence Server uses the endpoint's own presence information (in preference to the PUA generated
information) if possible
information) if possible
■
PUA generates In-call if the endpoint is in a call
■
PUA generates Online (by default) if the endpoint is registered but not in a call. This presence appears in Lync
as Available
as Available
■
PUA can generate presence for H.323 devices if the registered H.323 IDs resemble SIP URIs (eg.
name@domain)
name@domain)
See the Presence application topics in the VCS help for more details.
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Cisco VCS and Microsoft Lync Deployment Guide
Configuration