Do Not Disturb
By activating this function all incoming calls are blocked and automatically redirected to the answering machine. The function can be switched on and switched off at any moment.
Some telephones, depending on the brand and model, have the intercom function, which allows to begin communication by sending the signal. When the signal comes, the telephone set rings a signal different from the standard ring tone call. After that the telephone temporarily switches off from the telephone line and works as an intercom.
TechTerra Communications
TechTerra Communications Inc. was founded in 2003 to provide customers a flexible, quality long distance service with low rates. Our goal is to provide a full suite of products and services to fit the telecommunication needs of consumers and businesses, i
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