Cisco IOS Software for VoIP Applications Development

• Cisco Gatekeeper External Interface (GKTMP/API) Reference Guide

• H.323 Multizone Enhancements Addendum

• Cisco Pre-paid Debitcard Multi-Language Programmer's Reference

• TCL IVR API Version 1.0 Programmer's Guide
  Version 1.0 commands for writing TCL scripts for the Cisco IVR feature on the Cisco AS5300 gateway.

• TCL IVR API Version 2.0 Programmer's Guide
  Version 2.0 commands for writing TCL scripts for the Cisco IVR feature on the Cisco AS5300 gateway.

• RADIUS Vendor-Specific Attributes Voice Implementation Guide
  Reference of Cisco RADIUS VSAs for use with VoIP call authorization.