Cisco 8851 SIP Phone with Multiplatform Phone Firmware

This multiplatform phone firmware enables the 8800 Series to work with third-party call control systems.

For partners who provide voice and video services to end customers on third-party platforms, Cisco offers specific firmware loads that support these platforms and run on the Cisco^® IP Phone 8800 Series. The feature set provided by this firmware is not identical to that of the firmware designed and built for use with Cisco call control systems, but there are many similarities. For clarity, this data sheet focuses only on the features provided on these multiplatform phone firmware loads.

The Cisco 8851 supports five programmable line keys which you can configure to support either multiple directory numbers or calling features such as speed dial / BLF. This phone is compatible with up to 2 8800 Key Expansion Modules for even more programmable function keys.

**Phones ordered as multiplatform phones do not work with Cisco call control**

Features

• 5" high resolution colour display (800x480 pixel)
• 2x 10/100/1000 Gigabit Ethernet Switch
• PoE IEEE 802.3af/at Class 2 compliant (PSU available separately)
• Wideband audio (G.722)
• 10 SIP accounts (SIP Registrations)
• 5 programmable line keys
• Hands-free talking (speaker phone)
• Wall mountable (optional wall mount kit available)
• Headset support - Support for Wireless EHS headsets (requires EHS Adaptor)
• Hearing aid compatible
• Compatible with up to 2 x Cisco IP Phone 8800 Key Expansion Modules

Audio

• Codecs: G.711 (A-law andu-law), G.722.2, G.722, G.729ab, ILBC, iSAC, Opus
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO

Network

• MAC address (IEEE 802.3)
• SIP protocol support (RFC3261 and companion RFCs)
• IPv4 (RFC 791)
• DNS: A record (RFC 1706), SRV record (RFC 2782)
• Dynamic Host Configuration Protocol (DHCP) (RFC 2131)
• Simple Network Time Protocol (SNTP) (RFC 2030)
• NAT transversal, STUN
• UDP/TCP
• Link Layer Discovery Protocol (LLDP)
• Cisco Discovery Protocol (CDP)

Security

• 802.1x authentication
• Media encryption via SRTP
• Transport Layer Security (TLS)
• Encrypted configuration files
• Digest authentication
• Password Login
• HTTPS Secure provisioning

Applications

• Cisco XML services interface (XSI)

Call Control and Audio Features

• Busy Lamp Field
• Call back on busy
• Call blocking - anonymous and selective
• Call conferencing - hosted (N-party)
• Call conferencing - local 3-way
• Call forwarding - unconditional, no answer, on busy
• Call hold
• Call pickup - selective and group
• Call park and unpark
• Call transfer - attended or blind
• Call waiting
• Caller ID name and number and outbound caller ID blocking
• Caller ID mapping for incoming calls
• Configurable dial/numbering plan support with inter-digit timers - per line
• Configurable supplementary services soft keys
• Distinctive ringing based on calling and called number
• Do not disturb
• Extension mobility/hot-desking
• Group paging
• Hoteling
• Intercom
• Individual volume setting per audio path (headset/handset/speaker)
• Multicast paging
• Music on hold
• Outbound caller ID blocking
• Visual voice message indicator (VMWI)
• Shared/bridge line appearance
• Supplementary services feature activation codes

Directory

• Local phonebook
• XML/LDAP remote directory
• Broadsoft Directory
• Intelligent search
• Call History

Management

• Configuration: Browser/Phone/Auto-provision
• Auto provision via TFTP/HTTP/HTTPs for mass deployment
• Problem Reporting Tool (PRT)

In the Box

• CP-8851 Phone
• Handset
• Curly Cord
• Desktop Stand
• Network Cable