PUA Bridged Line Appearances

Anca-Maria Vamanu

Voice Sistem SRL

Edited by

Anca-Maria Vamanu

Table of Contents

1. Admin Guide
1. Overview
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
3. Parameters
3.1. default_domain(str)
3.2. header_name(str)
3.3. outbound_proxy(str)
3.4. server_address(str)
4. Functions
4.1. bla_set_flag
4.2. bla_handle_notify

List of Examples

1.1. Set default_domain parameter
1.2. Set header_name parameter
1.3. Set outbound_proxy parameter
1.4. Set server_address parameter
1.5. bla_set_flag usage
1.6. bla_handle_notify usage

Chapter 1. Admin Guide

1. Overview

The pua_bla module enables Bridged Line Appearances support according to the specifications in draft-anil-sipping-bla-03.txt.

2. Dependencies

2.1. Kamailio Modules

The following modules must be loaded before this module:

  • usrloc.

  • pua.

  • presence.

2.2. External Libraries or Applications

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

  • libxml.

3. Parameters

3.1. default_domain(str)

The default domain for the registered users to be used when constructing the uri for the registrar callback.

Default value is NULL.

Example 1.1. Set default_domain parameter

modparam("pua_bla", "default_domain", "kamailio.org")

3.2. header_name(str)

The name of the header to be added to Publish requests. It will contain the uri of the user agent that sent the Notify that is transformed into Publish. It stops sending a Notification with the same information to the sender.

Default value is NULL.

Example 1.2. Set header_name parameter

modparam("pua_bla", "header_name", "Sender")

3.3. outbound_proxy(str)

The outbound_proxy uri to be used when sending Subscribe requests.

Default value is NULL.

Example 1.3. Set outbound_proxy parameter

modparam("pua_bla", "outbound_proxy", "sip:proxy@kamailio.org")

3.4. server_address(str)

The IP address of the server.

Example 1.4. Set server_address parameter

modparam("pua_bla", "server_address", "sip:bla@")

4. Functions

4.1.  bla_set_flag

The function is used to mark REGISTER requests made to a BLA AOR. The modules subscribes to the registered contacts for dialog;sla event.

Example 1.5. bla_set_flag usage

if(is_method("REGISTER") && to_uri=~"bla_aor@kamailio.org") 

4.2.  bla_handle_notify

The function handles Notify requests sent from phones on the same BLA to the server. The message is transformed in Publish request and passed to presence module for further handling. in case of a successful processing a 2xx reply should be sent.

Example 1.6. bla_handle_notify usage

if(is_method("NOTIFY") && to_uri=~"bla_aor@kamailio.org") 
		if( bla_handle_notify() ) 
			t_reply("200", "OK");