pa Module

Jan Janak

FhG FOKUS

Edited by

Jan Janak


Table of Contents
1. User's Guide
1.1. Overview
1.2. Dependencies
1.2.1. OpenSER Modules
1.2.2. External Libraries or Applications
1.3. Exported Parameters
1.3.1. default_expires (integer)
1.4. Exported Functions
1.4.1. handle_subscription(domain)
2. Developer's Guide
3. Frequently Asked Questions
List of Examples
1-1. Set default_expires parameter
1-2. handle_subscription usage

Chapter 1. User's Guide

1.1. Overview

This module implements a presence server, i.e. entity that receives SUBSCRIBE messages and sends NOTIFY when presence status of a user changes. Currently the presence server can be connected to registrar and jabber module so SIP users can see presence of jabber users.

This module currently cannot work as a B2BUA, i.e. it cannot subscribe to presence of users using SIP. We are currently working on that feature.


1.2. Dependencies

1.2.1. OpenSER Modules

The following modules must be loaded before this module:

  • No dependencies on other OpenSER modules.


1.2.2. External Libraries or Applications

The following libraries or applications must be installed before running OpenSER with this module loaded:

  • None.


1.3. Exported Parameters

1.3.1. default_expires (integer)

Default expires value to be used when the client doesn't supply one (in seconds).

Default value is "3600".

Example 1-1. Set default_expires parameter

...
modparam("pa", "default_expires", 3600)
...

1.4. Exported Functions

1.4.1. handle_subscription(domain)

This function processes SUBSCRIBE and generates NOTIFY.

Meaning of the parameters is as follows:

  • domain - This can be either "registrar" or "jabber".

This function can be used from REQUEST_ROUTE, FAILURE_ROUTE.

Example 1-2. handle_subscription usage

...
handle_subscription("jabber");
...

Chapter 2. Developer's Guide

The module does not provide any API to use in other OpenSER modules.


Chapter 3. Frequently Asked Questions

3.1. Where can I find more about OpenSER?
3.2. Where can I post a question about this module?
3.3. How can I report a bug?

3.1. Where can I find more about OpenSER?

Take a look at http://openser.org/.

3.2. Where can I post a question about this module?

First at all check if your question was already answered on one of our mailing lists:

E-mails regarding any stable OpenSER release should be sent to and e-mails regarding development versions should be sent to .

If you want to keep the mail private, send it to .

3.3. How can I report a bug?

Please follow the guidelines provided at: http://openser.org/bugs.