The Express Talk softphone works like ... people who work outside the office. Features: ~Make voice and video calls ... using the Push to talk intercom. ~Includes Do Not Disturb button. ... calling (such as 911, 999, 000).

OfficeIntercom lets you use your computer ... the internet or your local office computer network. It works ... works as a virtual intercom and feels a little like ... phone bills and, in an office environment, no further cabling will ... because it uses the existing network.