Spectrum United States
- International VoIP Wholesale Provider
- Internet Telephony Service Provider
- Voip Termination ISP
- H.323 VoIP Gateway
- SIP VoIP Gateway
- Termination
- Quintum
- Billing system of own development
- Custom Open Source Billing Solution
SipTar CDR CallShop billing software ensures control of up to 16 cabins simultaneously, creation of invoices in real time and browsing the history of calls made by customers from each phone cabin.
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