Features

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.
Wideband Audio
- Support for wideband (G.722 codec, adherence to TIA 920), including handset, headset, and speakerphone.
Codec Support
- G.711a, G.711µ, G.729a, G.729ab, G.722, and iLBC audio compression codecs are supported.
Speakerphone
- Full-duplex speakerphone with acoustic echo cancellation.
Messages Key
- Provides direct access to voicemail.
Directories Key
- Ready access to missed, received, and placed calls (plus intercom history and directories). Incoming messages are identified and categorized on the display, allowing users to quickly and effectively return calls using direct dial-back capability. Corporate directory integrates with the Lightweight Directory Access Protocol Version 3 (LDAP3) standard directory.
Settings Key
- Allows user to adjust display contrast, select background images (if available), and select ringer sounds through the User Preference menu. Network Configuration preferences also can be set up (usually by the system administrator). Configuration can be set up either automatically or manually for Dynamic Host Control Protocol (DHCP), Trivial File Transfer Protocol (TFTP), Cisco Unified Communications Manager, and backup Cisco Unified Communications Manager instances. Other available Settings submenus include Device Configuration, Security Configuration, and Model Information.
Services Key
- Allows users to quickly access diverse information such as weather, stocks, quote of the day, or any Web-based information using XML.
Help Button
- Online Help gives users information about the phone keys, buttons, and features.
Speakerphone, Mute, and Headset Buttons
- Speakerphone includes Speaker On/Off, Microphone Mute, and Headset buttons that are lit when active. For added security, the audible dual tone multifrequency (DTMF) tones are masked when the speakerphone mode is used.
Ethernet Switch
- Internal 2-port Cisco Ethernet switch allows for a direct connection to a 10/100BASE-T Ethernet network through an RJ-45 interface with single LAN connectivity for both the phone and a colocated PC. System administrator can designate separate VLANs (802.1Q) for the PC and phone, providing improved security and reliability of voice and data traffic.
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.
Volume Control
- Provides easy decibel-level adjustments for the speakerphone, handset, headset, and ringer. The handset is hearing aid-compatible. Additional volume control gain can be achieved using an inline handset amplifier.
Adjustable Foot-Stand
- Stand is adjustable from flat to 60 degrees to provide optimum display viewing and comfortable use of all buttons and keys. The foot-stand is keyed to match standard wall-jack configurations for wall mounting. Optional wall-mount brackets are also offered.
Multiple Ring Tones
- More than 24 defined user-selectable ring tones are available. Ring tones may also be personalized through use of the Cisco Unified Phone Application Suite.
Americans with Disabilities Act (ADA) Features
- Handset is hearing aid-compatible and meets Federal Communications Commission (FCC) loudness requirements for the Americans with Disabilities Act (ADA). Section 508 loudness requirements can be achieved using industry-standard inline handset amplifiers such as Walker Equipment W-10 or CE-100 amplifiers. Dial pad is also ADA-compliant.
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.
Language Support
- Built-in support for more than 30 languages (dependent on Cisco Unified Communications Manager version).
Configuration Options
- IP address assignment can be statically configured or configured through the DHCP client.

Product Specifications

Dimensions (H x W x D)
- 20.32 x 26.67 x 15.24 cm
Weight
- 1.6 kg
Phone-Casing Composition
- Acrylonitrile butadiene styrene (ABS) plastic in textured dark gray color with silver bezel
Power
- Supports IEEE 802.3af PoE (Class 2). Also supports Cisco Prestandard Power over Ethernet (PoE), allowing powering from any of the Cisco Inline Power-capable blades and boxes, plus Cisco midspan. 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 (see Table 6).
Phone Software Requirements
- Supported in 8.3(2) and greater
Call Control Compatibility
- Supported in Cisco Unified Communications Manager Versions 4.1(3)sr5b, 4.2(3)sr2b, 4.3(1), 5.1.1(b), 5.1(2), 6.0(1) and greater.
- Supported in Cisco Unified Communications Express and SRST Version 4.1
Signaling Protocols
- Skinny Client Control Protocol (SCCP) and Session Initiation Protocol (SIP) with Cisco call control

Temperature Ratings

Operating Temperature
- 32 to 104°F (0 to 40°C)
Relative Humidity
- 10 to 95% (noncondensing)
Storage Temperature
- 14 to 140°F (-10 to 60°C)

مرکز تلفن ویپ سیسکو CP-7942G

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