Nortel Networks Mediant TP-1610 SIP - Manual (Page 245)

Mediant 2000 SIP User’s Manual K. RADIUS Billing and VXML Calling Card Application
Version 4.4 245 July 2005
Appendix K RADIUS Billing and VXML Calling
Card Application
The Mediant 2000 calling card application capability (included in its IVR - Interactive Voice
Response - feature) enables Internet Telephony Service Providers (ITSPs) to provide a VoIP
telephone service to subscribers who have purchased calling cards in advance.
The subscriber market for calling cards is growing exponentially worldwide. Calling cards are
often much cheaper than collect calls and operator-assisted calls made through long distance
providers and local phone companies. VoIP service providers, using the Mediant 2000, can
further reduce costs
for calling card subscribers and substantially reduce implementation time,
making the service extraordinarily attractive both for them and their subscribers.
K.1 Benefits
Using the Mediant 2000, telephony service providers can offer the calling card service over a
VoIP network and thereby:
• Lower the cost and deployment time that a PSTN calling-card service requires
• Achieve voice quality comparable to toll quality
• Acquire a cost-effective, reliable VoIP network infrastructure
• IVR functionality can be located at the edge of the network (distributed functionality) or in a
central location
• Connect with the PSTN over carrier interfaces
• Interoperate with other VoIP service providers and other vendors' VoIP equipment
• Become part of a world-wide network of other VoIP service providers interested in
interconnecting
K.2 Features
• PSTN IP and IP PSTN distributed IVR architecture
• AAA (Authentication, Authorization, Accounting) over standard RADIUS (Remote
Authentication Dial In User Service) - stored on a RADIUS server
• Provides comprehensive management of accounting and billing support
• CDRs (Call Detail Reports) over RADIUS (stored on a RADIUS server)
• Post-paid applications (Billing model: credit)
• Pre-paid application (Billing model: debit). When credit is exhausted the call is disconnected
(a short Prompt is played prior to disconnection)
• Common internal, on-board, Voice Prompts (in flash memory) for all VoiceXML (Voice
Extensible Markup Language) scripts
• Multiple VXML scripts stored on external HTTP server (up to 10 different scripts)
• Caller can place multiple successive calls without re-entering the account and password
numbers (authentication and authorization are applied without collecting the information from
the user again)
• Supports Cisco gateway RADIUS functionality
• Interoperates with standard RADIUS-based (AAA) billing servers
• Supports 240 concurrent calls running a VXML script