Cisco IP Phone 8851/8861 Key Expansion Module

Cisco IP Phone 8851 8861 Key Expansion Moduleview expanded image

Friendly, efficient, personal call handling. Get fast access to available staff. Increase the personal touch for inbound callers.

The optional Cisco IP Phone 8851/8861 Key Expansion Module is designed for receptionists, administrative staff, managers, and executives. This accessory enhances your productivity, giving you single-button access to the people and calling features your staff need most.

Voice collaboration for everyone

Enjoy superior video and voice communications with bring-your-own-device integration.

Features and capabilities


The 8851/8861 Key Expansion Module gives you access to more line and feature keys than come standard with the 8851 and 8861 IP Phones.

With the module, you can customize additional line or feature keys for telephony features you use frequently. For example, speed dials give you one-button access to the colleagues and staff you collaborate with most often.

The module also supports shared-line appearances between administrative staff, knowledge workers, and managers. These appearances enable a more personal touch, increasing responsiveness in support of inbound callers.

The module supports both Session Line Mode (SLM) and Enhanced Line Mode (ELM) user experiences. ELM support makes 8800 Series IP Phones a good fit for staff who currently have Cisco IP Phone 7900 Series and would like to take advantage of 8800 benefits.

User features:

  • Program 14 physical keys per module, 28 keys with “second page” in software
  • Keys present up to 14 characters when active, enhancing user accuracy in call handling
  • Two graphical, backlit, high-resolution color displays makes viewing easy
  • Get status of available staff with Busy Lamp Field (BLF) support
  • View both voice message and missed call counts on the display

IT benefits:

  • SLM and ELM support help minimize retraining when upgrading to the 8800 Series
  • One-, two-, and three-module configurations expand scalability and extend IP phone investment
  • Power options include Power over Ethernet (POE) and a local power cube
  • The Power Save Plus option reduces power consumption in off-hours

Generally available August 2017. Contact your Cisco representative for further details.

Specifications at a Glance


Attribute Specification
User experience modes SLM, ELM
Physical-programmable line and feature keys 14 per module; additional 14 via software page 2 key
Total programmable line and feature keys 28 per module; adds up to 84 in 3-module configuration
Characters per key Each key presents up to 21 (idle); up to 14 (active call)
Number of key modules supported 8851: Up to 2
8861: Up to 3
Power Power over Ethernet (PoE), Power cube
Display Two displays/module; Each 3.5 inch (89 mm) color, 320x480 pixel, backlit, antiglare

Sorry, no results matched your search criteria(s). Please try again.

Leading the way in collaboration

Improve team performance and IT investment value with Cisco IP Phones. (PDF - 4.5 MB)

Contact Cisco

  • Call Sales:
  • 1-800-553-6387
  • US/CAN | 5am-5pm PT

Support