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CP-7811-K9 – Cisco IP Phone – VoIP Phone
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CP-7811-K9 Description
The Cisco IP Phone 7811 (CP-7811-K9) is an affordable, entry-level VoIP endpoint designed for secure, high-quality voice communications in small to large business environments. As part of the Cisco 7800 Series, the 7811 delivers crystal-clear wideband audio, a full-duplex speakerphone, and a 3.28-inch grayscale display for streamlined call handling.Supporting one line, this model is ideal for lobbies, meeting areas, classrooms, or administrative desks that require reliable connectivity without unnecessary complexity. With dual 10/100 Ethernet ports, it allows both the phone and a connected PC to share a single network drop. The 7811 operates on Cisco Unified Communications Manager (12.5 and later) or Cisco Hosted Collaboration Solution, and supports advanced calling features like call forwarding, conferencing, and directory integration.Power can be provided via IEEE 802.3af PoE Class 1 or an optional external adapter, making deployment flexible in diverse network environments.
Quick Specs
|
Parameter 4563_744c52-2e> |
Value 4563_5c91fe-03> |
|---|---|
|
Lines Supported 4563_de3a95-54> |
1 4563_cbbc14-a7> |
|
Display 4563_269ef4-c8> |
3.28″ (384×106 pixels), greyscale, no backlight 4563_5d17dc-23> |
|
Ethernet 4563_4a8c3b-ae> |
10/100BASE-T (LAN & PC ports) 4563_383367-7d> |
|
PoE Class 4563_125de3-72> |
Class 1 IEEE 802.3af 4563_b0183c-66> |
|
Audio Codec Support 4563_86a0fd-32> |
G.711a/u, G.722, G.722.2, G.729ab, iLBC, OPUS 4563_9da4c4-44> |
|
Speakerphone 4563_3a26e5-42> |
Full-duplex 4563_ad6ca1-34> |
|
Handset 4563_0c8967-8a> |
Narrowband (HAC compliant) 4563_5ac08e-a2> |
|
Signaling Protocol 4563_eae7c2-0b> |
SIP 4563_36de68-1a> |
|
Dimensions (H×W×D) 4563_3618a0-2d> |
207 × 195 × 33 mm (without foot stand) 4563_0c2244-4f> |
|
Weight 4563_e991f6-70> |
806 g 4563_647dbc-a9> |
|
License Requirement 4563_3897bc-f4> |
Basic User Connect License (UCL) 4563_89f955-a4> |
Product Front
The Cisco IP Phone 7800 Series has distinct hardware types:
- Cisco IP Phone 7811 No buttons on either side of the screen
- Cisco IP Phone 7821 Two buttons on the left side of the screen
- Cisco IP Phone 7841 Two buttons on either side of the screen
- Cisco IP Phone 7861 16 buttons at the right edge of the phone
|
1 4563_4f380f-cf> |
Incoming call or voicemail indicator 4563_add279-b0> |
|
2 4563_03d901-25> |
Line and feature buttons 4563_3eca25-28> |
|
3 4563_ce27f4-af> |
Softkeys 4563_72261b-f1> |
|
4 4563_b56f54-4c> |
Navigation (navigation ring and Select button 4563_cd252d-d5> |
|
5 4563_3657eb-69> |
Hold, Transfer, and Conference 4563_d7b918-5a> |
|
6 4563_29543d-7f> |
Speakerphone, Headset, and Mute 4563_d36dff-6c> |
|
7 4563_c42d83-1e> |
Voicemail, Applications, and Directory 4563_f02b7d-44> |
|
8 4563_b88e99-4e> |
Volume 4563_785e21-88> |
Use line and feature buttons to view calls on a line, or access features such as Speed Dial.Buttons illuminate to indicate status:
|
Green, steady 4563_93a833-20> |
Active call 4563_f364cd-9c> |
|
Green, flashing 4563_80055d-74> |
Held call 4563_76dd27-03> |
|
Amber, steady 4563_20808b-f3> |
Private line in use 4563_af2b62-e2> |
|
Amber, flashing 4563_660a51-35> |
Incoming call 4563_6376ab-c8> |
|
Red, steady 4563_8fdbb0-28> |
Remote line in use 4563_99beff-02> |
|
Red, flashing 4563_3160fc-92> |
Remote line on hold 4563_58081f-a2> |
Model Selection Guide – Cisco CP-7811-K9
- Corporate Reception & Front Desk Operations
- The CP-7811-K9 is perfect for corporate receptionists and front desk staff who handle visitor inquiries or internal call transfers. Its single-line simplicity reduces operational complexity, while the high-quality audio ensures every conversation is clear and professional. With PoE support, the phone can be deployed without additional power adapters, making it ideal for modern open-space offices.
- Healthcare Facilities – Nurse Stations & Consultation Rooms
- In hospitals or clinics, reliability and hygiene are crucial. The CP-7811-K9’s robust build and minimal moving parts make it easy to clean, while the clear audio helps staff communicate with doctors or departments without repeating information. Its single-line design is sufficient for most nurse station workflows, and PoE reduces the need for electrical outlets in busy wards.
- Retail & Point-of-Sale Environments
- Retail staff can use the CP-7811-K9 at checkout counters, stockrooms, or store offices to quickly contact suppliers or coordinate with warehouse staff. The compact footprint fits into tight counter spaces, and dual Ethernet ports allow the phone and POS terminal to share the same network cable—saving infrastructure costs.
- Educational Institutions – Classrooms & Administrative Offices
- In schools and universities, the CP-7811-K9 is a cost-effective choice for classroom communication or staff offices. It supports essential features like call forwarding and voicemail without overwhelming users with unnecessary multi-line functions, making it ideal for everyday academic use.
- Hospitality Industry – Guest Service Desks
- Hotels and resorts can deploy the CP-7811-K9 in concierge areas or back-office service desks, where simple, reliable voice communication is needed. The full-duplex speakerphone allows hands-free interaction when staff need to check booking systems or assist guests while on a call.
Specifications
| Parameter | Specification |
|---|---|
| Model | Cisco IP Phone 7811 (CP-7811-K9) |
| Lines Supported | 1 |
| Display | 3.28-inch (384×106 pixels), grayscale, non-backlit |
| Ethernet Ports | 2× 10/100BASE-T RJ-45 (LAN and PC ports) |
| Speakerphone | Full-duplex |
| Codec Support | G.711 (A-law/μ-law), G.722, G.722.2, G.729ab, iLBC, OPUS |
| PoE Support | IEEE 802.3af PoE Class 1 (Max 3.84W) |
| Optional Power Supply | Cisco Power Adapter 3 (48V DC, 0.38A) |
| Call Control Support | Cisco Unified Communications Manager 12.5+, Cisco Hosted Collaboration Solution 8.6.2+ |
| Dimensions (H×W×D) | 207 × 195 × 33 mm (excluding foot stand) |
| Weight | 806 g |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Non-Operating Temperature | -10°C to 60°C (14°F to 140°F) |
| Humidity | Operating: 10% to 90%, non-condensing |
| Certifications | CE, UL 60950, CSA, EN55022, FCC Part 15 Class B |
Get More Information
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Quality Certifications
Customer Reviews
Questions & Answers
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Why is the Cisco CP-7811-K9 popular for large, budget-sensitive rollouts?
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Is CP-7811-K9 compatible with CUCM and Webex Calling?
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Does CP-7811 support PoE?
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Headset options?
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Security posture?
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Wall-mounting support?
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Gigabit passthrough?
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Ordered 50 for dorms. Bulk packing was convenient.
We need clear lines of communication. This phone delivers.
Basic phone for the breakroom. Works fine with CUCM.