- Single-line VoIP phone for hands-free communication
- 3.2-inch 384 x 106 pixels high-resolution grayscale display
- Dedicated fixed keys offer one-touch access to call features
- Built-in full-duplex (narrowband) speakerphone
- Wideband for enhanced audio and supported with an optional wideband handset
- Multi-call per-line appearance with tri-colour LED indicators
- Supports Localised language and right-to-left onscreen text
- Supports SIP protocol and Power over Ethernet (PoE)
- Pre-installed with multiplatform phone firmware
- Programmable line keys for lines or speed dialling
- Supports use with a third-party SIP platform
- Secure encrypted features including 802.1x authentication
Cisco CP-7811 IP Phone Description
The Cisco 7811 IP Phone CP-7811-K9 is a high-quality voice communication solution ideal for occasional-to-light communications needs, such as in lobbies, cafeterias, and conference centres. This high-performance IP phone offers sophisticated IP telephony capabilities and pristine wideband audio quality for an outstanding user experience tailored to businesses of all sizes.
One standout feature of the Cisco CP-7811 IP Phone is its integrated full-duplex narrowband speakerphone, which provides crystal-clear sound on both ends of every call. The full-duplex speakerphone ensures conversations are heard with exceptional clarity for effective communication during conferences or hands-free conversations. Built with a high-resolution 3.28” (384×106 pixels) greyscale display, it offers sharp, easy-to-read visuals with white backlighting, ensuring easy readability, effortless navigation and access to all features. It is also equipped with dedicated fixed keys for essential functions such as messaging, directory access, and conference calls, which boosts user efficiency and productivity.
Support for localised languages, featuring right-to-left onscreen text, caters to every user's requirements. Cisco CP-7811 IP Phone provides straightforward, secure, and budget-friendly VoIP communications, making it a perfect option for businesses moving from traditional analogue or digital systems to IP-based solutions.
Reliable IP Phone
The Cisco 7811 is a single-line VoIP phone designed for everyday communication use. Cisco's reliable engineering is evident in every detail of this entry-level SIP phone. It is feature-rich and offers a range of enterprise-class networking features beneficial to businesses, including 802.1x authentication, HTTPS provisioning, TLS and SRTP security. The Cisco 7811 is ideally suited for wall mounting, especially with the optional wall mount kit, making it a great choice for entrances or public areas.


Wideband Audio
Enjoy clear, natural-sounding audio with the Cisco CP-7811 IP Phone. Integrated full-duplex speakerphone lets you set up clear multi-party conferences for flexible, productive collaboration. Full-duplex audio enables simultaneous speaking and listening, ensuring participants communicate in meetings naturally without interruptions or delays. This capability enhances the quality of discussions, reduces misunderstandings, and fosters a more dynamic and interactive meeting environment. Whether you are using the handset or the full-duplex speakerphone, the 7811 delivers efficient wideband and narrowband audio.
Connectivity Convenience
The Cisco IP Phone 7811 features dual Ethernet ports and supports Power over Ethernet (PoE), allowing for a simplified installation with fewer cables and the flexibility to power the phone through the network connection. This ensures a cleaner workspace and reduces the need for additional power adapters, making it an efficient and streamlined choice for your communication needs.

Pre-Installed Firmware
The Cisco IP Phone 7811 comes pre-installed with multiplatform phone firmware, supporting use with a third-party SIP platform. Also certified to support Broadsoft and Centile, the IP phone has been tested to be interoperable with Asterisk while adding support for the Opus audio codec. It is an excellent phone upgrade for small businesses seeking to expand their voice communications.
Enhanced Usability
The phone’s high-definition audio and customisable interface enhance communication clarity and efficiency. Each line key is fully programmable allowing you to configure keys to assist with either lines, such as directory numbers, or call features like speed dialling. Using the multi-call per-line appearance feature, you can manage multiple calls for each directory number, boosting productivity and allowing you to focus on what matters most—your work. The tri-colour LEDs on the line keys contribute to a more user-friendly and straightforward phone experience.
What's in the Box?
- Cisco CP-7811 IP Phone
- One-position Footstand
- Ethernet Cable
- Quick Start Guide.
Cisco CP-7811 IP Phone CP-7811-K9= Technical Specs
Audio:
- Automatic Gain Control
- Comfort Noise Generation
- Silence Suppression/Voice Activity Detection
- Acoustic Echo Cancellation (AEC)
- Dynamic Noise Reduction
Signalling protocol support:
- Session Initiation Protocol (SIP)
Codec support:
- G.711a/ μ, G.722, G.729a/b, iLBC, OPUS
Key call features support:
- + Dialing (E.164)
- Abbreviated dial
- Adjustable ringing and volume levels
- Adjustable display contrast
- Agent greeting
- Auto-answer
- Auto-detection of the 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: Yes
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
- Signalling encryption using Transport Layer Security (TLS) Protocol using AES-128 or AES-256
- Encrypted configuration files
- 802.1X authentication
- Cryptography
Configuration options:
- Users can configure IP address assignment statically or through the DHCP client.
physical dimensions (H×W×D):
- 207 x 195 x 33mm (exclude footstand)
Weight:
- 806g
Display
- 3.28” 384×106 pixels
Ethernet switch:
- The phone has a 10/100BASE-T (The Cisco ® IP Phone 7811, 7821 and 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)
Cosmetic:
- Cisco cosmetic class A.
More Information
SKU | CP-7811-K9=-1 |
---|---|
Brand | Cisco |
Audio Conference Type | Desk Phone |
Multiple Part Calling | No |
Interface | Ethernet |
With Display | No |
Connectivity | Wired |
No. of User(s) | 1 |
Room Size | Small |
Connect To | IP Lines |
Display Option | Display & Keypad |
Available Ports | Ethernet |
Keypad | Yes |
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Cisco CP-7811 IP Phone Description
The Cisco 7811 IP Phone CP-7811-K9 is a high-quality voice communication solution ideal for occasional-to-light communications needs, such as in lobbies, cafeterias, and conference centres. This high-performance IP phone offers sophisticated IP telephony capabilities and pristine wideband audio quality for an outstanding user experience tailored to businesses of all sizes.
One standout feature of the Cisco CP-7811 IP Phone is its integrated full-duplex narrowband speakerphone, which provides crystal-clear sound on both ends of every call. The full-duplex speakerphone ensures conversations are heard with exceptional clarity for effective communication during conferences or hands-free conversations. Built with a high-resolution 3.28” (384×106 pixels) greyscale display, it offers sharp, easy-to-read visuals with white backlighting, ensuring easy readability, effortless navigation and access to all features. It is also equipped with dedicated fixed keys for essential functions such as messaging, directory access, and conference calls, which boosts user efficiency and productivity.
Support for localised languages, featuring right-to-left onscreen text, caters to every user's requirements. Cisco CP-7811 IP Phone provides straightforward, secure, and budget-friendly VoIP communications, making it a perfect option for businesses moving from traditional analogue or digital systems to IP-based solutions.
Reliable IP Phone
The Cisco 7811 is a single-line VoIP phone designed for everyday communication use. Cisco's reliable engineering is evident in every detail of this entry-level SIP phone. It is feature-rich and offers a range of enterprise-class networking features beneficial to businesses, including 802.1x authentication, HTTPS provisioning, TLS and SRTP security. The Cisco 7811 is ideally suited for wall mounting, especially with the optional wall mount kit, making it a great choice for entrances or public areas.


Wideband Audio
Enjoy clear, natural-sounding audio with the Cisco CP-7811 IP Phone. Integrated full-duplex speakerphone lets you set up clear multi-party conferences for flexible, productive collaboration. Full-duplex audio enables simultaneous speaking and listening, ensuring participants communicate in meetings naturally without interruptions or delays. This capability enhances the quality of discussions, reduces misunderstandings, and fosters a more dynamic and interactive meeting environment. Whether you are using the handset or the full-duplex speakerphone, the 7811 delivers efficient wideband and narrowband audio.
Connectivity Convenience
The Cisco IP Phone 7811 features dual Ethernet ports and supports Power over Ethernet (PoE), allowing for a simplified installation with fewer cables and the flexibility to power the phone through the network connection. This ensures a cleaner workspace and reduces the need for additional power adapters, making it an efficient and streamlined choice for your communication needs.

Pre-Installed Firmware
The Cisco IP Phone 7811 comes pre-installed with multiplatform phone firmware, supporting use with a third-party SIP platform. Also certified to support Broadsoft and Centile, the IP phone has been tested to be interoperable with Asterisk while adding support for the Opus audio codec. It is an excellent phone upgrade for small businesses seeking to expand their voice communications.
Enhanced Usability
The phone’s high-definition audio and customisable interface enhance communication clarity and efficiency. Each line key is fully programmable allowing you to configure keys to assist with either lines, such as directory numbers, or call features like speed dialling. Using the multi-call per-line appearance feature, you can manage multiple calls for each directory number, boosting productivity and allowing you to focus on what matters most—your work. The tri-colour LEDs on the line keys contribute to a more user-friendly and straightforward phone experience.
What's in the Box?
- Cisco CP-7811 IP Phone
- One-position Footstand
- Ethernet Cable
- Quick Start Guide.
Cisco CP-7811 IP Phone CP-7811-K9= Technical Specs
Audio:
- Automatic Gain Control
- Comfort Noise Generation
- Silence Suppression/Voice Activity Detection
- Acoustic Echo Cancellation (AEC)
- Dynamic Noise Reduction
Signalling protocol support:
- Session Initiation Protocol (SIP)
Codec support:
- G.711a/ μ, G.722, G.729a/b, iLBC, OPUS
Key call features support:
- + Dialing (E.164)
- Abbreviated dial
- Adjustable ringing and volume levels
- Adjustable display contrast
- Agent greeting
- Auto-answer
- Auto-detection of the 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: Yes
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
- Signalling encryption using Transport Layer Security (TLS) Protocol using AES-128 or AES-256
- Encrypted configuration files
- 802.1X authentication
- Cryptography
Configuration options:
- Users can configure IP address assignment statically or through the DHCP client.
physical dimensions (H×W×D):
- 207 x 195 x 33mm (exclude footstand)
Weight:
- 806g
Display
- 3.28” 384×106 pixels
Ethernet switch:
- The phone has a 10/100BASE-T (The Cisco ® IP Phone 7811, 7821 and 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)
Cosmetic:
- Cisco cosmetic class A.
SKU | CP-7811-K9=-1 |
---|---|
Brand | Cisco |
Audio Conference Type | Desk Phone |
Multiple Part Calling | No |
Interface | Ethernet |
With Display | No |
Connectivity | Wired |
No. of User(s) | 1 |
Room Size | Small |
Connect To | IP Lines |
Display Option | Display & Keypad |
Available Ports | Ethernet |
Keypad | Yes |