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.
SAIF Communications, Inc. is the solution for tomorrow`s complex global communications. We take the technical complexities away to provide our customers with a user-friendly cost-effective way to communicate worldwide.
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