General

• Wikipedia: E.164 PSTN/ISDN Numbering Plan
• Wikipedia: IP Multimedia Subsystem (IMS)
• Wikipedia: Softswitch Provide Feature Server function

Standards

• H.264 AVC
• H.264 SVC (H.264 feature)

Troubleshooting Tools

• ClearSight Networks’ Steve Wong Talks About How To Ensure VoIP Call Quality

Alcatel Lucent

• OmniPCX Enterprise Communication Server
• OmniPCX Office Communication Server

Asterisk

• Asterisk homepage
• Trixbox Linux distribution include asterisk, former Asterisk@Home
  • Trixbox Quick Start Guide
  • How to integrate Asterisk 1.6 with Avaya Voice Portal
  • Asterisk Cisco CallManager Integration
• RFC3261 – SIPSIP URI format: sip:user:password@host:port;uri-parameters?headers
• laimbock’s Asterisk 1.2 RPM
• djflux’s Asterisk 1.4 RPM
• Obsolete Asterisk packages for OpenWRT
• Zanbelt’s Asterisk 1.4.18 packages for OpenWRT Kamikaze 7.09
• astertest Asterisk stress test tool, 2005-03
• Backup and Restore an OpenWRT box (for 7.09)For RC6 or 0.9, use this to backup: dd if=/dev/mtdblock/1 of=/tmp/firmware.trx
• Asterisk & Snom phonesInclude Intercom & Paging function info
• Zaptel project being renamed to DAHDI (2008-05)
• Asterisk Bandwidth Calculator

• Asterisk load test with AstLinux
• PHPAGIPHP class for the Asterisk Gateway Interface
  On a Soekris NET4801-60 (probably Geode 266Mhz, 256M RAM)
• TechNet blog: Exchange 2007 UM with Asterisk 1.6
• Fedora 10 Asterisk 1.6 RPM
• Elastix (Asterisk distribution)
• World PSTN database – dial tone

• Asterisk Tutorials base on Trixbox

• rtc: lost some interrupts at 1024Hz error may related to ACPICan try turn off acpi in grub