IPsky United States
- International VoIP Wholesale Provider
- Phone To Phone
- Quintum
- Billing system of own development
Is a telephony service allowing the distribution of telephone calls from one telephone number in the group consisting from several telephone lines, using the special algorithm, which determines the line receiving a call.
Transcom
Transcom VOIP is a full voip DID and retail / business provider established in 1993 with a feature full service and free calling plans.
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