Standby Mode; Understanding The Phone Startup Process - Cisco 7921G - Unified Wireless IP Phone VoIP Administration Manual

Understanding the Phone Startup Process

Standby Mode

The phone goes into standby mode two seconds after a scan is complete. The phone will awaken from
standby mode in response to these events:
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The standard battery provides up to 150 hours of standby time and the extended battery provides up to
200 hours of standby time.
Related Topics
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Understanding the Phone Startup Process
When connecting to the wireless VoIP network, the Cisco Unified Wireless IP Phone 7921G goes
through a standard startup process, as described in
Depending on your specific network configuration, some of the steps might not occur on your unified
Note
IP phone.
Table 3-6 Cisco Unified Wireless IP Phone Startup Process
Step
1. Powering on the phone
2. Scanning for an access
point
Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified Communications Manager Release 7.0
3-18
Pressing keys on the keypad
Roaming between APs
Power cycling the phone
Losing network connectivity
Losing RF connectivity
Transmitting scheduled CDP or keep-alive packets.
Understanding the Phone Startup Process, page 3-18
Resolving Startup and Connectivity Problems, page 10-1
Description
The Cisco Unified Wireless IP Phone 7921G has
non-volatile Flash memory in which it stores firmware
images and user-defined preferences. At startup, the phone
runs a bootstrap loader that loads a phone image stored in
Flash memory. The phone uses this image to initialize its
software and hardware.
The Cisco Unified Wireless IP Phone 7921G scans the RF
coverage area with its radio. The phone searches its
network profiles and scans for access points that have a
matching SSID and authentication type. The phone
associates with the access point with the highest RSSI that
matches with its network profile.
Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G
Table 3-6.
Related Topics
Providing Power to the Phone,
page 3-7
Resolving Startup and
Connectivity Problems,
page 10-1
Interacting with Cisco Unified
Wireless APs, page 2-9
Resolving Startup and
Connectivity Problems,
page 10-1
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