iptel.org - avp

Sequential Call Hunting using AVPs

Sun, 04 Feb 2007 11:28:36 +0100

Short description:

Call Hunting is a mechanism by which a proxy server trys to place a call to any one number (user) in a list of numbers. The proxy tries each number in sequence until a number answers (200 OK) or all numbers are exhausted. In this example the call will be forwarded to the voice mail mailbox associated with the original called number when all numbers have been exhausted.

This example was created for a proxy running SERi 0.9.x

Steps:

Setup:

In this example I use MySQL for the data storage. The database also stores registrations, subscriber data and locally defined call feature/call permission flags. To enable the call hunting feature we will need a new table.

MySQL setup:

We create a new table for Single Attribute Multi-value data storage. We'll call this table "sam".

#
# Table structure for table 'sam' Single Attribute Multi-value
#

DROP TABLE IF EXISTS `sam`;
CREATE TABLE `sam` (
`uuid` varchar(64) NOT NULL default '',
`username` varchar(100) NOT NULL default '0',
`domain` varchar(128) NOT NULL default '',
`attribute` varchar(32) NOT NULL default '',
`value` varchar(128) NOT NULL default '',
`type` int(11) NOT NULL default '0',
`modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

avp

Sun, 26 Nov 2006 10:10:41 +0100

Module status:
Standard-dep

Description:
This module contains several functions that can be used to manipulate the contents of AVPs (Attribute-Value pairs). The AVPs are variables attached to the SIP message being processed. Each variable has its name and value. AVPs can be used to store arbitrary data or as a means of inter-module comminication.

Maintainers:

Jiri Kuthan
Michal Matyska

How to use Attribute Value Pairs (AVP’s) to determine if both the caller and the callee are in the same group.

Mon, 06 Nov 2006 14:17:17 +0100

SER Wishlist

Sun, 23 Apr 2006 15:47:31 +0200

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