The Cisco IP Phone 6800 Series introduces the Cisco IP Phone 6821 with Multiplatform Firmware, supporting two SIP registrations.

The line buttons are fully programmable. You can set up line buttons to support either SIP registrations, or call features, such as speed dialing. You can also boost productivity by handling multiple calls for each SIP registration, using the multiple-calls-per-line appearance feature. Tricolor LEDs on the line buttons support the calling features and make the phone simple to use.

Fixed function buttons on the 6821 phone gives you one-touch access to service, messaging, directory, hold/resume, transfer, and conference features. A full-duplex speakerphone lets you set up clear multiparty conferences for flexible, productive collaboration

The line buttons are fully programmable. You can set up line buttons to support either SIP registrations, or call features, such as speed dialing. You can also boost productivity by handling multiple calls for each SIP registration, using the multiple-calls-per-line appearance feature. Tricolor LEDs on the line buttons support the calling features and make the phone simple to use.

Core Features:

• White backlit, grayscale, 2.5-in. (6.4-cm) 240 x 120-pixel display
• Full-duplex speakerphone
• Power over Ethernet (PoE)
• Supports 2 SIP Registrations

Signaling protocol support Session Initiation Protocol (SIP)
Full lines supported ● 6821: 2 lines (SIP registrations)
● 6841: 4 lines (SIP registrations)
● 6851: 4 lines (SIP registrations)
● 6861: 4 lines (SIP registrations)
● 6871: 6 lines (SIP registrations)
Language support ● Bulgarian
● Catalan
● Chinese (Simplified)
● Chinese (Traditional, Hong Kong)
● Croatian
● Czech
● Danish
● Dutch
● English (American)
● English (United Kingdom)
● Finnish
● French (France)
● Greek
● Spanish (Colombia)
● German
● Hungarian
● Italian
● Japanese
● Korean
● Norwegian
● Polish
● Portuguese (Portugal)
● Russian
● Spanish (Spain)
● Slovak
● Swedish
● Slovenian
● Turkish
Multiple ring tones ● The phones support user-adjustable ring tones
Quality-of-Service (QoS) options
● The phone supports Cisco Discovery Protocol and 802.1Q/p standards, and can be configured with an 801.1Q VLAN header containing the VLAN ID overrides configured by the admin VLAN ID
Security ● 802.1X authentication
● Device authentication
● Encrypted configuration files
● File authentication
● Image authentication
● Manufacture-Installed Certificates
● Media encryption using SRTP with Advanced Encryption Standard AES-128 or AES-256
● Signaling encryption using TLS with AES-128 or AES-256
Configuration options ● The user can configure the IP address assignment statically or through the DHCP client
Physical dimensions (HxWxD)
● 6821: 8.2 x 6.7 x 1.5 in. (207 x 171 x 37.5) (excluding foot stand)
● 6861: 8.2 x 8.1 x 1.3 in. (207 x 206 x 33 mm) (excluding foot stand)
● 6851: 8.2 x 10.4 x 1.3 in. (207 x 265 x 33 mm) (excluding foot stand)
● 6861: 8.2 x 8.1 x 1.3 in. (207 x 206 x 33 mm) (excluding foot stand)
● 6871: 8.2 x 8.1 x 1.3 in. (207 x 206 x 33 mm) (excluding foot stand)
● 6800 Key Expansion Module: 8.15 x 4.45 x 1.65 in. (207 x 113 x 42 mm)
Weight ● 6821: 16 oz. (456 g) (excluding foot stand, handset, and package), 18 oz. (512 g) (including foot stand, excluding handset and package)
● 6841: 22 oz. (615 g) (excluding foot stand, handset, and package), 24 oz. (682 g) (including foot
stand, excluding handset and package)
● 6851: 22 oz. (615 g) (excluding foot stand, handset, and package), 24 oz. (682 g) (including foot
stand, excluding handset and package)
● 6861: 21 oz. (602.8 g) (excluding foot stand, handset, and package), 23.6 oz (670 g)) (including
foot stand, excluding handset and package)
● 6871: 21.3 oz. (604.4 g) (excluding foot stand, handset, and package), 23.9 oz (677.3 g)) (including
foot stand, excluding handset and package)
● 6800 Key Expansion Module: 11.5 oz. (320 g)
Display ● 6821: 2.5 in. (6.4 cm), 240 x 120 pixels
● 6841 and 6851: 3.5 in. (9 cm), 396 x 162 pixels
● 6861: 3.2 in. (8.1 cm), 320x120 pixels
● 6871: 3.5-in.(9-cm) 480 x 272-pixel color display
● 6800 Key Expansion Module: Two 3.5-in (9-cm) grayscale backlit LCD displays, 160 x 270
resolution
Ethernet switch ● 6821: A 10/100BASE-T Ethernet connection through two RJ-45 ports; one for the LAN connection and the other for a downstream Ethernet device connection such as a PC
● 6841, 6851 and 6871: A 10/100/1000BASE-T Ethernet connection through two RJ-45 ports; one for the LAN connection and the other for a downstream Ethernet device connection such as a PC
● 6861: A 10/100BASE-T Ethernet connection through one RJ-45 port for the LAN connection
Phone and KEM casing composition
● Polycarbonate Acrylonitrile Butadiene Styrene (ABS) textured plastic
Power requirements ● 6821, 6851: Interoperable IEEE 802.3af PoE (Class 2) devices. 5V DC is required; they can be supplied locally at the desktop using one of the optional AC-to-DC country-specific power supplies. See Table 6 for a list of available power supplies.
● 6841, 6861: Must be powered with the supplied 5V DC country-specific power supply, which is
included with the phone
● 6871: Interoperable IEEE 802.3af PoE (Class 3) devices. 5V DC is required; It can be supplied locally at the desktop using one of the optional AC-to-DC country-specific power supplies.
● 6800 Key Expansion Module: No local power supply. The KEM receives power from the attached
6851 IP phone. The attached 6851 IP phone may be powered via PoE or the 6800 (5V) power
adapter
Operational temperature ● 32° to 104°F (0° to 40°C)
Nonoperational temperature shock
● 14° to 140°F (-10° to 60°C)
Humidity ● Operating 10% to 90%, noncondensing
● Non-operating 10% to 95%, noncondensing
Certification and compliance for 6821
● Regulatory compliance:
◦ CE Markings per directives 2014/30/EU and 2014/35/EU
● Safety:
◦ UL 60950 Second Edition
◦ CAN/CSA-C22.2 No. 60950 Second Edition
◦ EN 60950 Second Edition (including A11 and A12)
◦ IEC 60950 Second Edition (including A11 and A12)
◦ AS/NZS 60950
● EMC – Emissions
◦ 47CFR Part 15 (CFR 47) Class B
◦ AS/NZS CISPR32:2015 Class B
◦ CISPR 32: 2015_COR1:2016 Class B
◦ EN55032: 2015+AC:2016
◦ ICES003 Class B
◦ EN61000-3-2:2014 and IEC 61000-3-2:2014
◦ EN61000-3-3:2013 and IEC61000-3-3:2013
◦ VCCI Class B
● EMC – Immunity
◦ EN55024
◦ CISPR24
◦ Armadillo Light
● Telecom
◦ FCC Part 68 HAC
◦ CS-03-HAC
◦ AS/ACIF S004
◦ AS/ACIF S040
◦ NZ PTC 220
◦ Industry standards: TIA 810
● Industry standards: IEEE 802.3 Ethernet, IEEE 802.3af
Certification and compliance for 6841, 6851, 6861 and 6871
● Regulatory compliance:
◦ CE Markings per directives 2004/108/EC and 2014/30/EU
● Safety:
◦ UL 60950 Second Edition
◦ CAN/CSA-C22.2 No. 60950 Second Edition
◦ EN 60950 Second Edition (including A11 and A12)
◦ IEC 60950 Second Edition (including A11 and A12)
◦ AS/NZS 60950
● EMC – Emissions
◦ 47CFR Part 15 (CFR 47) Class B
◦ AS/NZS CISPR32:2015 Class B
◦ CISPR 32: 2015_COR1:2016 Class B
◦ EN55032: 2015+AC:2016
◦ ICES003 Class B
◦ EN61000-3-2:2014 and IEC 61000-3-2:2014
◦ EN61000-3-3:2013 and IEC61000-3-3:2013
● EMC – Immunity
◦ EN55024
◦ CISPR24
◦ Armadillo Light
● Telecom
◦ FCC Part 68 HAC
◦ CS-03-HAC
◦ AS/ACIF S004
◦ AS/ACIF S040
◦ NZ PTC 220
◦ Industry standards: TIA 810 and TIA 920
● Industry standards: IEEE 802.3 Ethernet, IEEE 802.3af (for CP-6851 only)
● Radio (for CP-6861 only)
◦ FCC Part 15
◦ EN 300.328
◦ EN 301-489-1
◦ EN 301-489-17
◦ EN 301-489-3
◦ NCC LP0002
◦ EN 301 893
◦ EN 300 330
◦ RSP-100-11
◦ RSS- Gen
◦ RSS-102
◦ RSS-210
◦ RSS-247-2