Technical Specification
Review SIP details including signaling, codecs, encryption, and transport settings.
Learn how to dial outbound calls using E.164, access local in-country routes, and call short numbers in supported regions.
Redirect inbound calls through your Outbound Trunk using SIP Diversion header.
Secure outbound SIP trunks with authentication, IP restrictions, usage limits, and best practices for monitoring, firewalls, and user safety.
View SIP call flow examples, including Digest authentication, showing INVITE, 401 challenge, and re-INVITE sequences for setup and troubleshooting.
Learn about caller ID authentication and STIR/SHAKEN compliance.
Understand “Spam/Scam Likely” flags and how to prevent false positives.
Learn about RMD/B database queries and integration with VoIP systems.