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

Session Border Controllers


Session Border Controllers (SBC) allow SIP calls to traverse network boundaries (firewalls). Because SIP traffic contains IP-specific information, SIP messages need to be modified when they traverse a NAT'd (Network Address Translation) network connection. With the 4.x release of sipXecs, an internal Session Border Controller has been included. SBC functionality is important if you are planning on utilizing ITSP phone system connectivity (SIP Trunks) or if IP phones need to connect to the system across the Internet.

Unmanaged Session Border Controllers from third-party vendors can also be utilized by the system. These SBCs in most cases provide additional security and functionality beyond the integrated SBC.

sipXecs Session Border Controller

To enable internal SBC functionality, the service must first be enabled on the server. To enable the service, select the Servers menu item in the system menu. On the next screen, click on the PBX that will house the SBC and...