Best Expansion Module Voip Phones in 2026

The deskset and cordless handset use this superior-quality technology, which provides strong protection against wiretapping and the best call range while not interfering with wireless routers. Plus, it makes installation a breeze.

Digitally records up to 180 shared minutes of incoming messages, outgoing announcements, and memos. Simply connect the power cord and push the registration button on each device.

Enjoy a speakerphone that can keep up with your calls. Increase participation by allowing both ends to speak and be heard at the same time, for conversations that are more true to life.

This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com

3.5" TFT Display (320 x 240) 12 lines or speed dial keys

HD Voice up to 7KHz on all audio paths, Asian character support

The EXP40 Expansion Module for the SIP-T46S, SIP-T46G, SIP-T48S and SIP-T48G.

Expanding the functional capability of your sip phone to a whole new level.

Equipped with a 160x320 graphic LCD with Backlight. 20 physical keys each with a dual-color LED and two page views are possible.

NOTE: Only supported with Cisco IP Phone 8851 and 8861 models

EXPANDED CAPABILITIES: Adds 18-line keys and 2-page keys for a total of 36 additional keys

LARGE LCD DISPLAY: Allows for quick and easy identification of associated buttons

NOTE: Only supported with Cisco IP Phone 8851 and 8861 models

EXPANDED CAPABILITIES: Adds 18-line keys and 2-page keys for a total of 36 additional keys

LARGE LCD DISPLAY: Allows for quick and easy identification of associated buttons

CISCO REFRESH: Remanufactured is the Cisco certified, pre-owned equipment business. Refresh (-RF) carries the same warranty and access to software updates as with new products. To guarantee product direct from Cisco on Amazon; Ships From, Sold By Amazon

HEADSET COMPATIBLE: Connect an audio headset through the RJ-9 port for hands-free communications

EXPANDABLE: This office phone supports one Key Expansion Module, extending the capabilities of the Cisco IP Phone 6851 with additional buttons

COLOR DISPLAY: Easy to track call activity on its 5” color LCD screen.

ADDITIONAL CONTACTS: More contacts at your fingertips with 22 line keys and 3 pages — up to 66 contacts per expansion module.

ADD UP TO 2 MODULES: Track even more calls and contacts with the ability to plug up to 2 modules (E500 and E550 phones only).

Yealink T57W IP Phone with EXP50 Expansion Module [5 Pack] - Power Adapters INCLUDED

7” 800 x 480 capacitive adjustable touch screen

Adjustable LCD screen

Yealink T54W IP Phone with EXP50 Expansion Module [5 Pack] - Power Adapters INCLUDED

4.3″ 480 x 272-pixel color display with backlight

Adjustable LCD screen

This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com

The large LCD display of the Cisco Unified IP Phone Expansion Module 7915 allows for quick and easy identification of associated buttons

Using the Settings menu of the Cisco Unified IP Phone 7962G, 7965G, and 7975G models, you can adjust the contrast of the individual LCDs for these phones and the Cisco Unified IP Phone Expansion Module 7915 according to your preference.