HP-UX C SIP Stack Programmer's Guide (Novembery 2007)

SIP Stack 21

Application Programming Interface (API)

 Resource management

 Stack initialization and shutdown

 Logging

IGH-LEVEL API The High-level API includes:

 Dialog (Call-leg) API

 Register-Client API

 Authentication API

 Subscription API

DIALOG (CALL-LEG) API

The Dialog (Call-leg) API enables you to create calls, terminate calls, modify

existing calls (re-INVITE), authenticate calls and more. The Dialog (Call-leg)

API also provides a set of callbacks and hooks that provide you with the ability

to add your own call processing logic to the application without recompiling the

SIP Stack.

The Register-Client API enables you to register your User Agent to a Registrar.

The Register-Client API provides a set of callbacks and hooks that enables you

to take part in the registration process.

AUTHENTICATION API

The Authentication API enables you to verify the authenticity of the originator

of incoming requests and to add authentication information to outgoing requests.

SUBSCRIPTION API

The Subscription API enables you to manage subscriptions and to send and

receive SUBSCRIBE, REFER and NOTIFY requests.

ID-LEVEL API The Mid-level API includes:

 Transaction API