Cisco CP-6911-CL-K9 | Unified IP Phone 6911 Slimline VoIP Phone SCCP Charcoal

1. Display: 4-bit grayscale graphical monochrome display (396 x 162 pixels)
2. Ethernet switch: 10/100BASE-T Ethernet connection through an RJ-45 interface for LAN connectivity
3. Speakerphone: Full-duplex speakerphone with acoustic echo cancellation
4. Codec support: G.711a, G.711u, G.729a, G.729ab, and G.722 codecs for audio compression
5. Power: Supports IEEE 802.3af Power over Ethernet (PoE) and Cisco inline power
6. Protocol support: SCCP (Skinny Client Control Protocol)
7. Dimensions: 8.03 x 7.09 x 1.57 inches (20.4 x 18 x 4 cm)
8. Weight: 1.6 lbs (0.73 kg)
9. Call features: Call waiting, call transfer, call forward, call hold, conference, and more
10. Security features: Secure voice communication using 128-bit Advanced Encryption Standard (AES) encryption
11. Language support: More than 30 languages supported
12. Headset support: RJ-9 headset jack for headset connectivity

Helpful notes:
1. The slimline design of the phone makes it ideal for small workspaces.
2. The phone can be easily provisioned and configured remotely using Cisco Unified Communications Manager.
3. The phone is designed to be energy-efficient, reducing power consumption during periods of inactivity.