Technical Specification

SIP Details

Review SIP details including signaling, codecs, encryption, and transport settings.

SIP Protocol Details

Outbound Dialing

Learn how to dial outbound calls using E.164, access local in-country routes, and call short numbers in supported regions.

Outbound Dialing

Outbound SIP Trunk Security

Secure outbound SIP trunks with authentication, IP restrictions, usage limits, and best practices for monitoring, firewalls, and user safety.

Outbound SIP Trunk Security

Call Flow Examples

View SIP call flow examples, including Digest authentication, showing INVITE, 401 challenge, and re-INVITE sequences for setup and troubleshooting.

Call Flow examples

STIR/SHAKEN

Learn about caller ID authentication and STIR/SHAKEN compliance.

STIR/SHAKEN

Spam/Scam Likely

Understand “Spam/Scam Likely” flags and how to prevent false positives.

Spam/Scam Likely Due to Robocalls

Robocall Mitigation Database

Learn about RMD/B database queries and integration with VoIP systems.

Robocall Mitigation Database