Cisco 7821 SIP Phone with Multiplatform Phone Firmware

This multiplatform phone firmware enables the 7800 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 7800 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.

The Cisco 7821 IP phone allows for use of a wireless or wired RJ11 headset, for EHS support you will require an EHS adaptor

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

Features

• Hold/resume, transfer and conference key
• Hearing aid compatible
• 2 SIP lines (registration)
• Hands-free talking (Speakerphone)
• 3.5” Monochrome Backlit Display
• 2x 10/100 Ethernet Switch
• VoIP Telephone
• Visual ring indicator
• Wideband audio handset/ speakerphone
• 4 Programmable line keys
• Adjustable viewing angle
• Messaging, service and directory
• Audio path control
• Two position footstand
• Support for wireless EHS headsets (requires EHS adaptor)

Audio

• Codecs - G.711 (A-law andu-law-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)
• Network Address Translation (NAT) transversal, serial tunnel (STUN)
• UDP/TCP
• Link Layer Discovery Protocol (LLDP)
• Cisco Discovery Protocol

Security

• 802.1X authentication
• Media encryption via Secure Real-Time Transport Protocol (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 (BLF)
• 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 waiting 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-7821 phone
• Handset
• Curly cord
• Desktop stand
• Network cable