ghaval international s.a. Uruguay
- International VoIP Wholesale Provider
- SIP Billing
- VoIP Billing Software Provider
- Billing Software
- Termination
- Cisco Systems
- 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.
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