July 2002
Intermediate to advanced
528 pages
15h 13m
English
Content preview from Practical VoIP Using VOCALBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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How to Develop a Feature
To develop a feature using the CPL FS, write the feature as a CPL script. If the desired node and outputs are not available, you may extend CPL and the FS. The next section provides an example of adding some new CPL tags.
Desired CPL
As a tutorial lesson, let’s add new CPL functionality.
The first functionality is:
<im source="somebody@somewhere.com" msg="Come quick. I need you." >
This is the instant messaging functionality. Using this CPL node tag instructs the Feature server to send an instant message to the source with the specified message. <im> has no outputs.
The second functionality is:
<addressBkLookup name="Alan Smith" book="company.db" timeout="10" >
<found> ....
<not-found> ...This tag instructs the Feature server to query a database file for user information. The Feature server waits for a configured maximum time to hear from the database. Depending on the success or failure of the database search, the CPL script can create different outputs.
Sample CPL Scripts
The following represents a sample of the CPL scripts used to create the features provided with the VOCAL system. Some of these scripts have adjustable values; others include custom tags or custom uses of tags and attributes that are not compliant with the current CPL standard. These are called VOCAL keywords . The text following each example provides more information.
Example 1: Call Blocking
The phone number prefixes, highlighted in bold italics, can be changed to match your requirements. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.