SIP Packet Examples

Basic INVITE

Simple SIP INVITE request with basic headers and SDP offer.

Registration

Complete SIP REGISTER flow with authentication challenge (407), auth response, and success (200 OK).

Error Responses

Common SIP error responses like 404, 486, and 503.

BYE Request

SIP BYE request to terminate an active call session.

CANCEL Request

SIP CANCEL request to cancel a pending INVITE transaction.

OPTIONS Request

SIP OPTIONS request to query server capabilities.

Example Details

Select an example above to view the detailed SIP message

About SIP Packet Examples

This section provides real-world examples of common SIP messages and scenarios. Each example includes the complete SIP message with proper headers, formatting, and interactive explanations. Click on any line to see a floating explanation tooltip positioned near the selected line.

These examples are useful for:

  • Understanding SIP message structure
  • Learning proper header formatting
  • Debugging SIP implementations
  • Testing SIP applications
  • Educational purposes

Pro Tip

Use these examples as templates for your own SIP implementations. Pay attention to the header order and formatting, as these details matter for proper SIP compliance.