Cisco CP-8851-3PW-NA-K9 IP Phone 8851 MPP Multiplatform VoIP w/ Power Cube 4 - New

The Cisco IP Phone 8851 Multiplatform (MPP) — part number CP-8851-3PW-NA-K9 — is an enterprise SIP VoIP desk phone built for third-party hosted call control and open-SIP UCaaS deployments. It pairs a 5-inch 800x480 WVGA backlit color display with Gigabit Ethernet, Bluetooth 3.0 EDR, and USB for premium business call quality. Important: this is the MPP (Multiplatform) firmware variant — it runs third-party SIP call control and is not intended for Cisco UCM out of the box; feature parity with Cisco UCM enterprise firmware is not guaranteed. This bundle ships with the Cisco Power Cube 4 (CP-PWR-CUBE-4) AC adapter and North America power cord, so a PoE switch is not required.

Cisco CP-8851-3PW-NA-K9 - Key Features & Benefits

• Multiplatform (MPP) Firmware: Ships with MPP firmware for third-party SIP call control — designed for open-SIP and hosted UCaaS platforms. Not intended for Cisco UCM out of the box; feature set differs from Cisco UCM enterprise firmware.
• Power Cube 4 Included: Bundle includes the Cisco Power Cube 4 (CP-PWR-CUBE-4) AC adapter and North America power cord — plug in and go, no PoE switch required.
• 5-Inch WVGA Color Display: 800x480, 24-bit color, backlit 5-inch widescreen WVGA display for clear menus, caller ID, and call management.
• 2-Port Gigabit Ethernet Switch: Built-in 10/100/1000BASE-T 2-port switch lets a workstation share the same drop via PC passthrough; phone and PC traffic share the single uplink, so VLAN configuration on the access switch is recommended for voice/data separation.
• Bluetooth 3.0 EDR + USB: Integrated Bluetooth 3.0 EDR Class 1 (up to 66 ft / 20m) for headset and mobile pairing plus Cisco Intelligent Proximity; side USB port supports wired/wireless headsets and provides up to 500 mA / 2.5W of charging power for a connected smartphone.
• 5 Programmable Line Keys + Wideband HD Voice: Five backlit programmable keys (configurable for directory numbers, speed dial, or feature keys); full-duplex speakerphone with wideband audio for crystal-clear calls.

Cisco CP-8851-3PW-NA-K9 - Technical Specifications

• Manufacturer / Model: Cisco IP Phone 8851
• Part Number (MPN): CP-8851-3PW-NA-K9
• Firmware: Multiplatform (MPP) — SIP / third-party call control
• Display: 5-inch widescreen WVGA 800x480, 24-bit color, backlit
• Programmable Line Keys: 5
• Network: 2-port 10/100/1000BASE-T Gigabit Ethernet switch (RJ-45)
• PoE: IEEE 802.3af / 802.3at compatible • Class 3 (HW <V08), Class 4 (HW V08+)
• Power Input Rating: 0.917A, 48V DC
• Power (Included): Cisco Power Cube 4 (CP-PWR-CUBE-4) AC adapter + NA power cord
• Bluetooth: 3.0 EDR Class 1 (up to 66 ft / 20m)
• USB: 1x side USB port (headset support; up to 500 mA / 2.5W charging output)
• Audio Codecs: G.711 a-law/µ-law, G.722, G.722.2, G.729ab, iLBC, iSAC, OPUS
• Headset Jack: RJ-9 wideband-capable analog headset port + AUX (EHS)
• Dimensions (H x W x D): 9.02 x 10.13 x 1.57 in. (229.1 x 257.34 x 40 mm)
• Weight (with handset): 2.62 lb (1.19 kg)
• Region: North America (NA)
• Condition: New

Cisco CP-8851-3PW-NA-K9 - Frequently Asked Questions (FAQ)

• Will this phone work with Cisco UCM (Unified Communications Manager)?
  This phone ships with MPP firmware for third-party SIP call control and is not intended for Cisco UCM out of the box. The MPP firmware also has a different feature set than the Cisco UCM enterprise firmware — some UCM-only features are not available. For a UCM-ready phone, look for the enterprise firmware variant (CP-8851-K9=).
• What VoIP platforms is the 8851 MPP compatible with?
  The MPP firmware is designed for open-SIP and third-party hosted call control platforms. Compatibility depends on provider provisioning — please confirm with your VoIP provider that they support Cisco 8800 series MPP phones before purchasing.
• Is a power adapter included? Do I need a PoE switch?
  Yes — the Cisco Power Cube 4 (CP-PWR-CUBE-4) AC adapter and NA power cord are included. A PoE switch is not required, though the phone also supports 802.3af / 802.3at PoE if you prefer (PoE Class 3 on hardware revisions before V08, Class 4 on V08 and later).

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