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Cisco Unified IP Phone 9951
Advanced Collaborative Media Endpoints

Cisco Unified IP Phone 9951
Cisco Products
Cisco Unified IP Phones 9900 Series
Cisco Unified IP Phone 9951, Charcoal, Standard Handset, Spare
Our Price: Request a Quote
Cisco Unified IP Phone 9951, White, Standard Handset, Spare
Our Price: Request a Quote
Cisco Unified IP Phone 9951, White, Slimline Handset, Spare
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The Cisco Unified IP Phone 9951 is an executive class collaboration endpoint that provides voice, video, applications and accessories. Highlights include Gigabit Ethernet, Wideband Audio, Color Display along with a new industrial design and user interface designed for simplicity and high usability. Accessories, sold separately, include a standard definition USB camera, Jawbone ICON for Cisco Bluetooth headset, color Key Expansion Module plus support for Bluetooth, USB devices. Application support includes XML capabilities.

  • Newly developed industrial design and user experience designed for use with its VGA display
  • H.264 video support for 2-way standard definition calling with USB support for the Cisco Unified IP Camera
  • Gigabit Ethernet network connectivity and switch port available for a downstream PC
  • Embedded Bluetooth radio and 2 USB ports for headsets and the camera
  • Firmware support for XML applications

Advanced Collaborative Media Endpoints

Accelerate decision making with the addition of high-performance business video directly from your desk phone.

The Cisco Unified IP Phone 9900 Series delivers high-quality, interactive multimedia communications and advanced features in an elegant ergonomic design that is user - and eco-friendly.

Advanced features include:

  • Interactive business video elevates and personalizes communications (Requires Cisco Unified Video Camera
  • Large backlit, vibrant high-resolution 640 x 480 pixel, graphical, fully-adjustable color display makes viewing easy
  • Five tri-color illuminated LED line/feature keys provide at-a-glance status for primary and shared lines
  • Four programmable soft-label keys for fast feature access
  • Dual standard USB 2.0 ports support wired headsets for greater choice and convenience
  • Four-way navigation cluster plus select button aids in applications selection
  • Bluetooth 2.0 headset profiles add freedom at the desk
  • High-definition voice (HD voice) adds clarity in communications
  • Up to two Cisco Unified IP Color Key Expansion Modules for added scalability of line/feature keys
  • Gigabit Ethernet switch ports for high-speed network connection and reduced infrastructure cost
  • XML applications transform business processes and enhance user experience.

Eco-friendly features include:

  • Reground and recyclable plastics.
  • Deep-Sleep power option reduces power consumption up to 90 percent in off-hours versus the phone in active state during the workday.

Features and Benefits:

Feature Benefit
Ergonomic Design Highly usable and intuitive arrangement of lines, features and calls. Transfer, Conference and Hold appear on hard keys to reduce the number of presented softkeys to a maximum of 4 per call state.
Customization This model can be ordered as Arctic White or Charcoal Gray. Handsets are available internationally as slimline (5oz, 140g) or standard (6oz, 170g) and can be mixed and matched between users within the same work environment to enable a feeling of customization and ownership among the users.
Display VGA presentation for calling, video calling and applications. 5-inch (10 cm) graphical TFT color display, 24-bit color depth, 640 x 480 effective pixel resolution, with backlight. Display also supports localization requiring double-byte Unicode encoding for fonts.
Ethernet Internal 2-port Cisco Ethernet switch allows for a direct connection to a 10/100/1000 BASE-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.
Bluetooth Mobility for headset users within 30 feet of their desktop to enable the freedom to go to the printer, a colleague's desk or nearby private location while on a call. The 9951 supports the Hands-free and Headset Bluetooth profiles.
USB 2 USB ports accelerate the usability of call handling and applications by enabling accessories such as the Cisco Unified IP Camera, wired and wireless headsets.
External Audio Ports General Purpose Audio In and Audio Out ports enable a relaxed speakerphone experience over external speakers and microphone.
5 Lines Expanding to 77 with 2 Key Expansion Modules The convenience of many speed dials or programmable features, or the necessity of following the activity of many lines. Up to 200 calls supported per device.
Buttons 5 feature buttons with state indicating LEDs
5 call session buttons with state indicating LEDs
Applications, Directories, Voicemail
Conference, Transfer, Hold
Volume Up/Down
Back-lit Mute, Speakerphone, Headset
Back, End Call, 5-Way Navigation Pad
Arabic keypad
Key Expansion Module Available separately, enables advanced use of lines, speed dials and features.
Cisco Unified IP Camera Available separately, enables 2-way video calling between phones or to a media conference unit.
Headset Support Integrated design & advanced, updateable firmware for Jawbone ICON for Cisco Bluetooth headset which also works with all major mobile phone models. Also supports standard Bluetooth and USB headsets supported via the hands-free and headset Bluetooth profiles. Wideband analog headset support also provided via a dedicated RJ9 headset port on the rear of the phone.
New User Experience Advanced organization of lines, speed dials and programmable features separate from call appearances. Great for those who make few calls per day, better for those who handle dozens of calls per hour.
SIP Signaling SIP interoperation with the call control and partner applications enables a rich unified communications solution.
Application Support XML applications provided by Cisco's application development partners or customers' own development staff.

Technical Specifications:

Product Specifications
Protocols SIP for signaling
H.264 for video
Connectivity 10/100/1000 wired Ethernet network port plus switched PC port
Options Arctic White or Charcoal Gray color
Slimline (5oz, 140g) or Standard (6oz, 170g) handset
Language Support Arabic, Bulgarian, Catalan, Chinese (People's Republic of China), Chinese (Hong Kong), Chinese (Taiwan), Croatian, Czech, Danish, Dutch, English - plus localized prompts for the UK, Estonian, French, Finnish, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese (Portugal), Portuguese (Brazil), Romanian, Russian, Spanish (Spain), Slovak, Swedish, Serbian (Republic of Serbia), Serbian (Republic of Montenegro), Slovenian, Thai, Turkish
Physical Dimensions (HxWxD) 9.2" (23.4 cm) x 10.33" (26.25 cm) x 1.56" (3.97 cm)
In slab mode with the footstand removed
Power IEEE Power over Ethernet 802.3af and 802.3at supported, class 4. The 9951 is compatible with both class 3 and class 4 IEEE PoE switch blades and supports both Cisco Discovery Protocol (CDP) and Link Layer Discovery Protocol - Power over Ethernet (LLDP-PoE)
Temperature Range
Operational Temperature 32 to 104°F (0 ~ 40°C)
Relative Humidity 10 to 95% (noncondensing)
Storage Temperature 14 to 140°F (-10 to 60°C)
Quantity Shipped per Pallate 320 units
Calling Features
Calling Feature Support
  • + Dialing
  • Abbreviated dialing
  • Adjustable ringing and volume levels
  • Adjustable display brightness
  • Agent Greeting/Whisper Coaching
  • Application Launch Pad
  • Auto-answer
  • Auto-detection of headset
  • Barge
  • Callback
  • Call forward
  • Call forward notification
  • Call history lists
  • Call park
  • Call pickup
  • Call timer
  • Call waiting
  • Caller ID
  • Corporate directory
  • Conference
  • Direct transfer
  • Extension mobility service
  • Fast-dial service
  • Forced access codes/Client matter codes
  • Group call pickup
  • Hold
  • Intercom
  • Immediate divert
  • Join
  • Last-number redial
  • Malicious-caller ID
  • Message-waiting indicator
  • Meet-me conference
  • Music on hold
  • Mute
  • Network profiles (automatic)
  • On- and off-network distinctive ringing
  • OPickUp
  • Personal directory
  • Predialing before sending
  • Privacy
  • Redial
  • Ring tone per line appearance
  • Service URL
  • Shared line
  • Time and date display
  • Transfer
  • Visual Voice Mail
  • Voice Mail
Audio Codec Support G.711a, G.711u, G.729a, G.729ab, G.722, iSAC and iLBC audio compression codecs.
Configuration Options
  • Dynamic Host Configuration Protocol (DHCP) client or static configuration
  • Support for online firmware upgrades using Trivial File Transfer Protocol (TFTP)
  • Domain Name System (DNS)
  • HTTP Firmware Management
Network Features
  • Cisco Discovery Protocol (CDP)
  • Link Layer Discovery Protocol Power over Ethernet (LLDP-PoE)
  • Transparent secure roaming
  • Provisioning of network parameters through DHCP
  • Switch Auto-Negotiation
  • VPN Client
Security Features
  • Certificates
  • Image authentication
  • Device authentication
  • File authentication
  • Signaling authentication
  • Media encryption using Secure Real-Time Protocol (SRTP)
  • Signaling encryption using Transport Layer Security (TLS) Protocol
  • Certificate authority proxy function (CAPF)
  • Secure profiles
  • Encrypted configuration files
Provisioning and Manufacturing
  • Cisco Unified Communications Manager Express Version Negotiation
  • Web server for configuration and statistics
  • QoS reporting: jitter, delay, dropped packets, and latency on a per-call basis
  • Real Time Control Protocol (RTCP) support and monitoring
  • Syslog
Video Features and Benefits
Video Standards H.264/AVC
Frame Rates 30 fps (maximum) using H.264/AVC for video
Frame or Picture Formats SQCIF (128 x 96 pixels)
QCIF (176 x 144 pixels)
QVGA (320 x 240 pixels)
SIF (352 x 240 pixels)
CIF (352 x 288 pixels)
VGA (640 x 480 pixels)

Unified Communications Manager Support

  • Cisco Unified Communications Manager version 7.1(3a)SU1 or later.
    - Some features require more recent version of UC Manager and Dev Pack support. Please check the release notes for more information.
  • Survivable Remote Site Telephony (SRST) version 4.3 or later.
  • CME 8.6 or later


Phone licensing is dependent on the call control platform and its policies. For the Cisco Unified Communications Manager, the 9951 requires 4 Device License Units (DLUs) or an Enhanced IP User Connect License for UCM release 7.1(5) or later. There are no special licence plus phone bundles for Tier II distributors. The 9951 is not support on non-Cisco third party call control systems.


Download the Cisco Unified IP Phone 9951 Datasheet (PDF).

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Pricing Notes:

Cisco Products
Cisco Unified IP Phones 9900 Series
Cisco Unified IP Phone 9951, Charcoal, Standard Handset, Spare
Our Price: Request a Quote
Cisco Unified IP Phone 9951, White, Standard Handset, Spare
Our Price: Request a Quote
Cisco Unified IP Phone 9951, White, Slimline Handset, Spare
Our Price: Request a Quote