Upgrading Old Telephone Systems To Use VoIP

by Bruce Stewart

Say you want to route interoffice calls over your company's wide area network instead of via conventional telephone lines or point-to-point leased lines. Your telephone system is an outdated heap of junk that was designed circa 1970. How do you trick it into routing interoffice calls via VoIP? Brian McConnell shows you exactly how to achieve this bit of VoIP wonder in his recent O'Reilly Network weblog Telecom Recipes - Upgrading Old Telephone Systems To Use VoIP For Inter-Office Calls.