Cisco 7921G - Manual (Page 23)

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Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0
OL-10802-02
Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G
Powering On the Cisco Unified Wireless IP Phone 7921G
Depending on the quality of these devices and their proximity to other devices
such as mobile phones or two-way radios, some audio noise may still occur. In
these cases, Cisco recommends that you take one or more of the following actions:
• Move the external device away from the source of the RF or AF signals.
• Route the external device cables away from the source of the RF or AF
signals.
• Use shielded cables for the external device, or use cables with a better shield
and connector.
• Shorten the length of the external device cable.
• Apply ferrites or other such devices on the cables for the external device.
Cisco cannot guarantee the performance of the system because Cisco has no
control over the quality of external devices, cables, and connectors. The system
will perform adequately when suitable devices are attached using good quality
cables and connectors.
Caution In European Union countries, use only external speakers, microphones, and
headsets that are fully compliant with the EMC Directive [89/336/EC].
Powering On the Cisco Unified Wireless IP Phone
7921G
After charging the battery and configuring the wireless IP phone, you are ready to
power on the phone and connect to the WLAN. Use the following sections for
more information about starting up the phone:
• Active and Standby Phone Modes, page 3-25
• Understanding the Phone Startup Process, page 3-26
To power on the Cisco Unified Wireless IP Phone 7921G, press and hold the
Power On button until the phone begins its startup process by cycling through
these steps:
1. The phone displays the Cisco Systems screen.