Cisco CP-7962G Administration Guide - Page 46

Providing Power to the Cisco Unified IP Phone Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network Power Guidelines Table 2-1 provides guidelines for powering the Cisco Unified IP Phone 7962G and 7942G. Table 2-1 Guidelines for Powering the Cisco Unified IP Phone 7962G and 7942G Power Type External power-Provided through the CP-PWR-CUBE-3 external power supply. External power-Provided through the Cisco Unified IP Phone Power Injector. PoE power-Provided by a switch through the Ethernet cable attached to the phone. External power-Provided through inline power patch panel WS-PWR-PANEL Guidelines • The Cisco Unified IP Phones 7962G, 7942G, 7961G, and 7941G use the CP-PWR-CUBE-3 power supply. • The Cisco Unified IP Phone 7961G-GE and 7941G-GE use the CP-PWR-CUBE-3 external power supply only. The Cisco Unified IP Phone Power Injector may be used with any Cisco Unified IP Phone. Functioning as a midspan device, the injector delivers inline power to the attached phone. The Cisco Unified IP Phone Power Injector is connected between a switch port and the IP Phone, and supports a maximum cable length of 100m between the unpowered switch and the IP Phone. • The Cisco Unified IP Phones 7962G, 7942G, 7961G, and 7941G support Cisco inline PoE, but the Cisco Unified IP Phones 7961G-GE, and 7941G-GE do not. • The Cisco Unified IP Phone 7962G and 7942G support IEEE 802.3af Class 2 power on signal pairs and spare pairs. The Cisco Unified IP Phones 7961G-GE, and 7941G-GE are not compatible with Cisco switches that are not IEEE compliant. • To ensure uninterruptible operation of the phone, make sure that the switch has a backup power supply. • Make sure that the CatOS or IOS version running on your switch supports your intended phone deployment. Refer to the documentation for your switch for operating system version information. The inline power patch panel WS-PWR-PANEL is compatible with the Cisco Unified IP Phone 7962G and 7942G. Power Outage Your accessibility to emergency service through the phone is dependent on the phone being powered. If there is an interruption in the power supply, Service and Emergency Calling Service dialing will not function until power is restored. In the case of a power failure or disruption, you may need to reset or reconfigure equipment before using the Service or Emergency Calling Service dialing. Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP) 2-4 OL-21011-01