A2Z Trading A.G. Switzerland
- International VoIP Wholesale Provider
- H.323 VoIP Gateway
- Clarent
- Custom Open Source Billing Solution
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.
Go2Call
Go2Call delivers a complete suite of hosted international VoIP solutions to providers worldwide. Go2Call`s back-office solutions enable carriers and resellers, broadband service providers, ISPs, new VoIP license holders, call shops and other distributors
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