Cisco CP-6921-CL-K9 | Unified IP Phone 6921 Slimline-VoIP Phone Multiline Charcoal

1. Display: 396 x 81 pixels, monochrome, anti-glare, backlit
2. Ethernet switch: 10/100BASE-T
3. Protocol support: SCCP, SIP
4. Speakerphone: Full-duplex
5. Codec support: G.711a, G.711u, G.729a, G.729ab, iLBC
6. Audio features: Comfort noise generation, voice activity detection, echo cancellation, adjustable volume settings
7. Call control protocols: Skinny Client Control Protocol (SCCP), Session Initiation Protocol (SIP)
8. Call features: Call waiting, call transfer, call hold, call forward, call park, call pickup
9. Power over Ethernet (PoE): IEEE 802.3af
10. Dimensions (WxDxH): 8.2 in x 6.1 in x 6.5 in
11. Weight: 2.2 lbs
12. Operating temperature: 32°F to 104°F

Helpful notes:
1. The Cisco Unified IP Phone 6921 is a reliable and affordable choice for businesses of all sizes.
2. The slimline design makes it a great option for areas with limited space.
3. The phone is easy to set up and use, with intuitive controls and a user-friendly interface.