Voip Cisco IP Phone CP-7942G

Display:5-inch (12.5 cm), high-resolution (320 x 222), graphical monochrome 4-bit grayscale display. Allows for greater flexibility of features and applications, and significantly expands the information viewed when using features such as Services, Information, Messages, and Directory. Display also supports localization requiring double-byte Unicode encoding for fonts.

Headset Port:Dedicated headset port eliminates the need for a separate headset amplifier and allows the handset to remain in its cradle, making headset use simpler. Both wideband (G.722) and narrowband headsets are supported.

Quality of Service (QoS) Options:Supports differentiated services code point (DSCP) and 802.1Q/p standards.

Security:Positive device identity through X.509v3 Certificates, digitally signed images, cryptographically secure provisioning, and secure signaling and secure media with AES-128. The phone also contains an 802.1X supplicant and supports EAPOL pass-through.

Power:Supports IEEE 802.3af PoE (Class 3). 48VDC is required; it can be supplied locally at the desktop using an optional AC-to-DC power supply (part number CP-PWR-CUBE-3=) or power injector (CP-PWR-INJ=). Local power options require a corresponding AC country cord.

Signaling Protocols:Skinny Client Control Protocol (SCCP) and Session Initiation Protocol (SIP) with Cisco call control.