CP-6921-WL-K9 (USED) Specification
| Specification | Description |
| Firmware upgrades | You can download firmware changes from Cisco.com. |
| Software upgrades | Software upgrades are supported with a Trivial File Transfer Protocol (TFTP) server. |
| Dimensions (H x W x D) | Cisco Unified IP Phone 6921: 164 x 188 x 205 mm (6.4 x 7.4 x 8.1 in.). |
| Weight | Cisco Unified IP Phone 6921: Standard: 1031g (36 oz); Slimline: 940g (33 oz). |
| Phone casing composition | Polycarbonate acrylonitrile butadiene styerene (ABS) plastic. |
Power Requirements
| Power Requirement | Description |
| IEEE 802.3af PoE | The phones can receive power from IEEE 802.3af-compliant blades. |
| Local power | The phones can also be powered locally with a power adapter (CP-PWR-CUBE-3=) along with one of the power cords listed in Table 4. |
AC Region and Country-Specific Power Cords
| Part Number | Country |
| CP-PWR-CORD-AP= | Asia Pacific |
| CP-PWR-CORD-AR= | Argentina |
| CP-PWR-CORD-AU= | Australia |
| CP-PWR-CORD-CE= | European Community |
| CP-PWR-CORD-CN= | China |
| CP-PWR-CORD-JP= | Japan |
| CP-PWR-CORD-NA= | North America |
| CP-PWR-CORD-SW= | Switzerland |
| CP-PWR-CORD-UK= | United Kingdom |
Temperature Ratings
| Temperature Variable | Description |
| Operating temperature | 32 to 104ºF (0 to 40ºC) |
| Relative humidity | 10 to 95% (noncondensing) |
| Storage temperature | 14 to 140ºF (-10 to 60ºC) |
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