PUA Bridged Line Appearances

Anca-Maria Vamanu

Edited by

Anca-Maria Vamanu


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_domain(str)
1.3.2. header_name(str)
1.3.3. outbound_proxy(str)
1.3.4. server_address(str)
1.4. Exported Functions
1.4.1. bla_set_flag
1.4.2. bla_handle_notify
2. Developer's Guide
3. Frequently Asked Questions
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. User's Guide

1.1. Overview

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


1.2. Dependencies

1.2.1. OpenSER Modules

The following modules must be loaded before this module:

  • usrloc.

  • pua.

  • presence.


1.2.2. External Libraries or Applications

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

  • libxml.


1.3. Exported Parameters

1.3.1. 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", "openser.org")
...

1.3.2. 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")
...

1.3.3. 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@openser.org")
...

1.3.4. server_address(str)

The IP address of the server.

Example 1-4. Set server_address parameter

...
modparam("pua_bla", "server_address", "sip:bla@160.34.23.12")
...

1.4. Exported Functions

1.4.1. 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@openser.org") 
	bla_set_flag();		
...

1.4.2. 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@openser.org") 
{
		if( bla_handle_notify() ) 
			t_reply("200", "OK");
}	
...

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?

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://sourceforge.net/tracker/?group_id=139143.