Book Image

Building Enterprise Ready Telephony Systems with sipXecs 4.0

Book Image

Building Enterprise Ready Telephony Systems with sipXecs 4.0

Overview of this book

Open source telephony systems are making big waves in the communications industry. Moving your organization from a lab environment to production system can seem like a daunting and inherently risky proposition. Building Enterprise Ready Telephony Systems with sipXecs delivers proven techniques for deploying reliable and robust communications systems. Building Enterprise Ready Telephony Systems with sipXecs provides a guiding hand in planning, building and migrating a corporate communications system to the open source sipXecs SIP PBX platform. Following this step-by-step guide makes normally complex tasks, such as migrating your existing communication system to VOIP and deploying phones, easy. Imagine how good you'll feel when you have a complete, enterprise ready telephony system at work in your business. Planning a communications system for any size of network can seem an overwhelmingly complicated task. Deploying a robust and reliable communications system may seem even harder. This book will start by helping you understand the nuts and bolts of a Voice over IP Telephony system. The base knowledge gained is then built upon with system design and product selection. Soon you will be able to implement, utilize and maintain a communications system with sipXecs. Many screen-shots and diagrams help to illustrate and make simple what can otherwise be a complex undertaking. It's easy to build an enterprise ready telephony system when you follow this helpful, straightforward guide.
Table of Contents (17 chapters)
Building Enterprise-Ready Telephony Systems with sipXecs 4.0
Credits
About the Author
About the Reviewer
Preface
Glossary

Phantom users


A Phantom user is simply a user account on the system that will never have a user agent (phone) registered to it. Phantoms can be used for voicemail-only mailboxes or for call routing purposes. Whatever their purpose be, phantoms should have any permissions that are not required removed for security.

Voicemail-only mailbox

A voicemail-only mailbox is useful for having callers deposit voicemail for a team of users. The voicemail should be checked on a regular basis (see Chapter 7) or have voicemail forwarded to an email address that is monitored.

Note

There is no way to set a message notification on a user's phone for anything but their own voicemail, so using email notification of messages (to an email box or cell phone) is very useful for voicemail-only mailboxes.

All permissions except voicemail permission should be removed from voicemail-only mailboxes. This prevents any SIP devices from being able to log into the proxy as the phantom user and make calls. If there are many...