Cisco 6901 Administration Manual page 35

Chapter 1 An Overview of the Cisco Unified IP Phone
Cisco Unified Communications Manager System Guide
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Table 1-10
User Guide
Auto Barge
Message Indicators
Voicemail System
Cisco Unified IP Phone 6901 and 6911 Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)
OL-24582-01
Terminology Differences
Administration and System Guides
cBarge
Message Waiting Indicator (MWI) or
Message Waiting Lamp
Voice Messaging System
Terminology Differences
1-23