Cisco 7970G IP Phone Power Transformer

Cisco 7970 IP Phone Power Transformer

To operate in full-power mode, the Cisco IP Phone 7970 requires a Cisco-approved external power supply. Current in-line power solutions do not provide sufficient power to the Cisco IP Phone 7970 to operate in full-power mode. If you use this phone with existing in-line power solutions: The display brightness of the LCD screen may appear noticeably dimmed. The Brightness control on the phone (Settings > User Preferences > Brightness) will not allow you to set the brightness higher than the low-power mode allows. You cannot use an external microphone or external speakers with the phone. When the phone uses in-line power, the audio settings (Settings > Audio Preferences) are disabled to prevent the selection of external devices.

For details about supported microphone and speakers, refer to the "External Speakers and Microphone" section. The Cisco IP Phone 7970 cannot use an older external power supply (CP-CUBE-PWR). The Cisco IP Phone 7970 uses a new power supply, CP-PWR-CUBE-2 (341-0081-01).