extension phone

Also found in: Thesaurus.
Related to extension phone: telephone extension
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.extension phone - an additional telephone set that is connected to the same telephone lineextension phone - an additional telephone set that is connected to the same telephone line
phone, telephone, telephone set - electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds; "I talked to him on the telephone"
References in periodicals archive ?
The rooms contain a seating area and desk with a dual-line extension phone, and IDD and PC connections.
Then you can put your wife on an extension phone and the three of us can talk this over and see if we can calm her down a little."
The "business telephone" exception generally allows monitoring calls and taping over an extension phone which is both provided to a subscriber in the ordinary course of the telephone company's business and is being used by that subscriber in the ordinary course of its business.
* Enlist a friend or relative to take notes on an extension phone or in the doctor's office to ensure that you get the answers you need.
"The Avaya solution has given employees control over their communications which has made us more accessible to our customers and each other, and more productive, due to extension phone portability inside Vitro in any network port, and outside facilities through the Softphone," said Luis Molina, Planning & Operations Infrastructure Technology manager for Vitro.
KDDI's E02SA can be used as an extension phone when in the office, through wireless LAN-enabled VoIP, or as an au mobile phone when out of the office, creating an efficient office environment.
(33) The issue generally arises where one spouse conducts a wiretap of the conversations engaged in by the other spouse by attaching a recording device to an extension phone in the family home.
Unfortunately, it did not work and after several phone calls to Powergen's help desk, I was informed that our extension phone is not compatible - it will not work through this dialler box.
The unit also integrates a speakerphone with "True Hold," which enables users to automatically take a call off hold when an extension phone is picked up.
The video connection also may disconnect if another person picks up an extension phone to join the conversation.