Network / Firewall

Tracing

• How to monitor the audio quality on a Yealink device
• Why do we see a sporadic 401 Unauthorized SIP response?
• How to open a trace (PCAP file)?
• How to perform a trace from a Yealink device?

Tools

• Voip Connection Analyzer - Mac/Linux
• VoIP Connection Analyzer - Windows
• SIP ALG detector

General

• How to change packetization time in a Fritzbox device?
• How to perform a ping or traceroute?
• Which IPs should I whitelist in my firewall?