Unified Messaging

This is a combination of several message transfer forms (SMS, fax, voicemail, video chat) into one interface available on several sets.

Providers in database: 6433

Intercom Paging

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.

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