A2Z Trading A.G. Switzerland
- International VoIP Wholesale Provider
- H.323 VoIP Gateway
- Clarent
- Custom Open Source Billing Solution
“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
VoloCall, LLC
VoloCall is a privately-held telecommunications wholesale provider delivering flexible, reliable, high-quality products and services. As a premier telecommunications provider, VoloCall is committed to providing superior technology which is capable of deli
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