VOIP Service Providers Residential
3fon.net
Antares Corporation
ipshka.com
Telegroup Ukraine
Telegroup Ukraine
New Communications
Trance Telecom
Trance Telecom Inc.
a.k.a. BillBery
billing with dynamic routing, LCR, PLM, analysis features and VoIP hosting support.
Ukraine / Kiev / Sholudenko street 3, office 104
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DCom Group LLC
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.
