Cisco IP Phone 6921 (CP-6921-C-K9)

Cisco IP Phone 6921 (CP-6921-C-K9) - high-quality two-line business-class IP phone with enterprise-class audio quality. Supports 2 lines and features a full-duplex speakerphone for increased productivity, flexibility and ease of use.

Cisco IP Phone 6921 (CP-6921-C-K9) - high-quality two-line business-class IP phone with enterprise-class audio quality. Supports 2 lines and features a full-duplex speakerphone for increased productivity, flexibility and ease of use.
Cisco 6921 (CP-6921-C-K9) Specifications:

• Monochrome display
• 2 telephone lines
• Built-in switch: 2 RJ-45 10/100BASE-T ports
• Interface for connecting a wired headset RJ9
• Custom ringtones
• Signaling protocol support: Skinny Client Control Protocol (SCCP) and Session Initiation Protocol (SIP)

• Functionality: Supports 2 telephone lines
• Data Transfer: Cisco Discovery Protocol IEEE 802.1 p/q tagging and switching, support for Skinny Client Control Protocol (SCCP) signaling protocols when using Cisco Unified Communications Manager and Cisco Unified Communications Manager Business Edition 7.1.2, Cisco Unified Communications Manager Express 8.0 and later
• Voice transmission: Support for G.711a, G.711, G.729a, G.729b and G.729ab codecs, iLBC audio compression, voice quality, comfort noise generation and voice activity detection (VAD) Up to seven custom ringtones.
• Security: SRTP data transfer encryption; TLS signaling encryption; AES phone configuration encryption.
• Management: Built-in web server providing configuration and RTCP Syslog statistics output
• QOS Report: Jitter, Latency, Lost Packets, Per Call Latency.