A2Z Trading A.G. Switzerland
- International VoIP Wholesale Provider
- H.323 VoIP Gateway
- Clarent
- Custom Open Source Billing Solution
Numbers starting with 0800, 800, 1-800 are usually toll-free for the caller; the called party, however, has to cover the charges on those calls.
Business Telecom Advisors, Inc
As a comprehensive resource for all your telecommunications solutions, Business Telecom Advisors (BTA) acts as your advocate for telecom-related issues and challenges. As experts in the telecommunications industry, our goal is to address and solve the voi
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