---

Note:

• The full product specifications below are from the manufacturer and may contain information related to other package quantities that will not apply to the product that you are reviewing. Please confirm the actual content and/or package quantity from the main product specifications page.
• These specifications may represent the entire product series/model/line to which this product belongs with specific configuration differences between the individual products stated.
• These specifications may have been copied from the same product in other region/country in which case there might be minor differences in region-specific data such as Input Voltage, Terms of Warranty etc.

Signaling protocol support

●  Session Initiation Protocol (SIP)

Codec support

●  G.711a/μ, G.722, G.729a, iLBC

Key call features support

●  + Dialing (E.164)

●  Abbreviated dial

●  Adjustable ringing and volume levels

●  Adjustable display contrast

●  Agent greeting

●  Auto-answer

●  Auto-detection of headset (Not available on the IP Phone 7811)

●  Busy Lamp Field (BLF) (Not available on the IP Phone 7811)

●  Call back

●  Call forward

●  Call history

●  Call park

●  Call Pickup

●  Call timer

●  Call waiting

●  Caller ID

●  cBarge

●  Corporate directory

●  Conference

●  Cross Cluster Extension Mobility (EMCC)

●  Dial from the list

●  Direct transfer

●  Do not disturb

●  Extension Mobility (EM)

●  Forced access codes and client matter codes

●  Group call pickup

●  Hold/resume

●  Immediate divert

●  Intercom (Not available on the IP Phone 7811)

●  Join (Not available on the IP Phone 7811)

●  Message-waiting indicator

●  Meet me conference

●  Mobility

●  Music on hold

●  Mute

●  Network profiles (automatic)

●  On- and off-network distinctive ringing

●  Personal directory

●  Privacy

●  Private Line Automated Ringdown (PLAR)

●  Redial

●  Ring tone per line appearance

●  Shared line

●  Silent monitoring and recording

●  Speed dial

●  Time and date display

●  Transfer

●  Voicemail

●  Whisper coaching

Language support

●  Arabic (Arabic Area)

●  Bulgarian (Bulgaria)

●  Catalan (Spain)

●  Chinese (China)

●  Chinese (Hong Kong)

●  Chinese (Taiwan)

●  Croatian (Croatia)

●  Czech (Czech Republic)

●  Danish (Denmark)

●  Dutch (Netherlands)

●  English (United Kingdom)

●  Estonian (Estonia)

●  French (France)

●  Finnish (Finland)

●  German (Germany)

●  Greek (Greece)

●  Hebrew (Israel)

●  Hungarian (Hungary)

●  Italian (Italy)

●  Japanese (Japan)

●  Latvian (Latvia)

●  Lithuanian (Lithuania)

●  Korean (Korea Republic)

●  Norwegian (Norway)

●  Polish (Poland)

●  Portuguese (Portugal)

●  Portuguese (Brazil)

●  Romanian (Romania)

●  Russian (Russian Federation)

●  Spanish (Columbia)

●  Spanish (Spain)

●  Slovak (Slovakia)

●  Swedish (Sweden)

●  Serbian (Republic of Serbia)

●  Serbian (Republic of Montenegro)

●  Slovenian (Slovenia)

●  Thai (Thailand)

●  Turkish (Turkey)

Multiple ring tones

●  The phone supports user-adjustable ring tones.

Directories

●  The phone identifies incoming messages and categorizes them for users on the screen. This makes it fast and easy to return calls using direct dial-back capability. The corporate directory integrates with the Lightweight Directory Access Protocol (LDAP) standard directory.

Quality-of-service (QoS) options

●  The phone supports CDP 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

●  Certificates

●  Image authentication

●  Device authentication

●  File authentication

●  Signaling authentication

●  Media encryption using Secure Real-Time Transfer Protocol (SRTP) using AES-128

●  Signaling encryption using Transport Layer Security (TLS) Protocol using AES-128 or AES-256

●  Encrypted configuration files

●  802.1X authentication

●  Cryptography

Configuration options

●  The user can configure IP address assignment statically or through the DHCP client.

Physical dimensions (H×W×D)

●  IP Phone 7841: 207 x 206 x 28mm (exclude foot stand)

Weight

●  IP Phone 7841: 868g

Display

●  IP Phone 7821, 7841, 7861: 3.5” 396×162 pixels

●  IP Phone 7811: 3.28” 384×106 pixels

Ethernet switch

●  The phone has a 10/100BASE-T (The Cisco^® IP Phone 7811, 7821 & 7861) or a10/100/1000BASE-T (The Cisco^® IP Phone 7841) Ethernet connection through two RJ-45 ports, one for the LAN connection and the other for a downstream Ethernet device connection like a PC.

Phone casing composition

●  Polycarbonate acrylonitrile butadiene styrene (ABS) textured plastic.

Power requirements

●  The phone is an interoperable IEEE 802.3af PoE (Class 1 device); 48 VDC is required; it can be supplied locally at the desktop using an optional AC-to-DC power supply (CP-PWR-CUBE-3=). Use of the power supply also requires the use of one of the corresponding AC country cords.

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%, non-condensing

●  Non-operating 10% to 95%, non-condensing

Cosmetic

●  Cisco cosmetic class A

Certification and compliance

●  Regulatory Compliance

CE Markings per directives 2004/108/EC and 2006/95/EC

●  Safety

UL 60950 Second Edition
CAN/CSA-C22.2 No. 60950 Second Edition
EN 60950 Second Edition (including A11 & A12)
IEC 60950 Second Edition (including A11 & A12)
AS/NZS 60950
 GB4943

●  EMC - Emissions

47CFR Part 15 (CFR 47) Class B
AS/NZS CISPR22 Class B
CISPR22: 2005 w/Amendment 1: 2005 Class B
EN55022: 2006 w/Amendment 1: 2007 Class B
ICES003 Class B
VCCI Class B
 EN61000-3-2
EN61000-3-3
 KN22 Class B

●  EMC - Immunity

EN55024
CISPR24
EN60601-1-2
KN24
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 and 802.3at