VOIP Service Providers Residential
Osool telecom
Osool Telcom Solutions, Inc. strives to make VoIP more mainstream by helping VoIP service providers prepare for the challenges that are just now emerging on the horizon.
Osool helps them do this by enabling them to outsource their complete VoIP back-e
Yemen / Riyadh / saudi arabia
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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.
