CP-7821-3PCC-K9-RF Cisco IP Phone 7821 supporting two lines

Hardware Features

● 3.5-inch (396 × 162 pixels) greyscale white backlit display
● Traditional ergonomic design with intuitive navigation and soft keys
● Wideband-capable RJ-9 handset, hearing aid compatible (HAC) and ADA-compliant
● RJ-9 wideband-capable headset port
● Full-duplex speakerphone with DTMF tone masking
● Backlit indicators for line keys, select key, audio path keys, and message waiting
● Volume control toggle for handset, speaker, and ringer
● Replaceable black bezel (optional silver bezel available separately)
● Dual-position foot stand (30° and 45°); removable for wall-mount deployment
● Wall-mountable with optional kit
● Electronic hookswitch support for third-party headsets via AUX port
● Keys include: line, soft, navigation, hold/resume, transfer, conference, messaging, directory, services, volume, mute, speakerphone, and headset

Networking

● Dual 10/100BASE-T Ethernet ports (LAN and PC)
● Supports Cat3/5/5e/6 cables with 4 pairs

Power

● IEEE 802.3af PoE (Class 1), max consumption 3.84W
● Optional AC power: CP-PWR-CUBE-3= and CP-PWR-ADPT-3
● Power injector support: CP-PWR-INJ or AIR-PWRINJ5=

Call Control Support

● Cisco Unified Communications Manager 8.5.1, 8.6.2, 9.1.2, 10.x and later
● Cisco Business Edition 6000 8.6.2, 9.1.2, 10.x and later
● Cisco Hosted Collaboration Solution 8.6.2 and later
● Cisco SRST 8.x and later

Specifications

● Signaling protocol: SIP
● Codec support: G.711a/μ, G.722, G.729a, iLBC
● QoS: 802.1p/q, CDP, VLAN ID support
● Security: TLS (AES-128/256), SRTP, 802.1X, device/image/file/signaling/media authentication, encrypted configuration
● Language support: English, French, German, Spanish, Russian, Chinese (Simplified/Traditional), Japanese, Korean, and more
● Adjustable ringtones, display contrast, volume levels
● LDAP corporate directory integration
● Full suite of call features: call forward, transfer, conference, hold, resume, redial, voicemail, DND, caller ID, call waiting, intercom, speed dial, BLF, EM, EMCC, PLAR, whisper coaching, and more

Environmental

● Operating temperature: 0°C to 40°C (32°F to 104°F)
● Storage temperature: -10°C to 60°C (14°F to 140°F)
● Operating humidity: 10% to 90%, non-condensing
● Non-operating humidity: 10% to 95%, non-condensing

Physical

● Dimensions (H × W × D): 207 × 206 × 28 mm (without foot stand)
● Weight: 867 g
● Phone casing: Polycarbonate ABS textured plastic

Compliance

● Safety: UL 60950, CAN/CSA-C22.2, EN/IEC 60950, AS/NZS 60950, GB4943
● EMC – Emissions: FCC Part 15 Class B, CISPR22, EN55022, ICES003, VCCI, KN22
● EMC – Immunity: EN55024, CISPR24, KN24, Armadillo Light
● Telecom: FCC Part 68 HAC, CS-03-HAC, AS/ACIF S004/S040, NZ PTC 220
● Industry standards: IEEE 802.3, 802.3af, 802.3at; TIA 810, TIA 920