VoIP Links
- Abstract Syntax Notation One (ASN.1)
- Acme Packet
- Asterisk - The Open Source Linux PBX
- Brooktrout Technology
- CCIE Voice Track - Cisco Systems
- FreeWorld Dialup
- H.323 Information Site
- H.323 VoIP Products by Quintum
- http--www.ietf.org-internet-drafts-draft-shore-nat-reachability-00.txt
- IETF - SIP Working Group
- Intersync Solutions - Learn Network Technologies
- Jasomi Networks
- Netrake - nCite Session Controllers
- New Telephony
- Newport Networks - 1460
- NexTone Communications
- On-Line VoIP Bandwidth Calculator
- OpenH323 Project
- Protocols.com - VoIP
- Session Controller Forum
- SIP Basic Telephony Station Features
- SIP Express Router
- SIP Forum
- SIP Session Initiation Protocol
- Telephony Online
- The Linux-PAM System Administrators' Guide
- The SIP Center
- The Voice Peering Fabric (VPF)
- Thinkengine Networks
- Understanding the H.323 Standard - Microsoft
