Nulltel Latvia
- International VoIP Wholesale Provider
- Internet Telephony Service Provider
- Voip Termination ISP
- H.323 VoIP Gateway
- PC to Phone
- Phone To PC
- Phone To Phone
- SIP VoIP Gateway
- Termination
- Web Call
- Web To Phone
- Cisco Systems
- Custom Open Source Billing Solution
- IP Phone
Allows users tracking the condition of the other telephone or the subscriber, for example, there will appear a signal on the screen of the telephone device informing that the subscriber is on the line and is temporarily unavailable.
Lingo (Primus)
Lingo is one of the most affordable U.S. Internet phone services. Lingo offers unlimited local and long distance calls anywhere in the U.S., to Canada, and to Western Europe, plus over 25 calling features
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