Prerequisites for Presence Service on CME

Prerequisites for Presence Service

•Cisco Unified CME 4.1 or a later version.

•Cisco Unified IP Phones 7911G, 7941G, 7941GE, 7961G, 7961GE, 7970G, and 7971GE require firmware load 8.2(1) or a later version.’

This basically means we cannot use presence on 79{46}0

via Cisco Unified Communications Manager Express System Administrator Guide – Configuring Presence Service  [Cisco Unified Communications Manager Express] – Cisco Systems.