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Rollout: Cisco Systems 7921G phone: Page 3 of 4

Cisco claims 10 hours of talk time, and 80 hours of standby with a standard battery. Our talk-time results were 9 hours and 50 minutes; other vendors promise no more than 6 hours of talk time with standard batteries.

The 7921G is also best run on Cisco gear. It complies with CCX (Cisco Compatible Extension) 4, a proprietary protocol that requires Cisco infrastructure. Also, the 7921G only supports Cisco's proprietary SCCP (Skinny Client Control Protocol), which requires Cisco CallManager 4.1 or later.

The Cisco phone can be configured from its keypad by using some simple menu options. It can also be configured though a Web interface, though it requires a USB connection with a PC the first time the phone is used; subsequent configuration changes can be made wirelessly.

The capability to use a TFTP server or a third-party configuration server for profile updates is planned but no release date has been projected.

The Cisco 7921G is $525. A standard battery costs $75 and an AC adapter is $45, for a total cost of $645.