When I was a kid, I loved reading the Dr. Seuss books with the fun and educational rhymes. Some things never grow old. It seems that it is the same with the quality of a phone call. From the early days of the switchboard to calls over the cellular network, the phrase “can you repeat that? I couldn’t hear you” has been commonly heard over the years.
Back in 1999, when 3G was still a questionable dream IMS started to take root as an architecture for mobile services. It was adopted by the 3GPP and later on also by 3GPP2 and other organizations and forums. Standardization work went on for many years resulting in continues releases of standard versions forcing vendors to enter a cat-and-mouse game.
For most of us who grew up in the telecom industry, management protocols like SNMP, TR-69, and Command Line Interface (CLI) have been for many years the only management protocols we’ve known and used on telecom equipment. Telecom’s bigger (but younger) brother, the Internet, has developed its own set of management interfaces (APIs), mainly SOAP and REST.
The need for businesses to remain on-line at all times, if the connection to the service provider or on premise equipment should go down, is a critical one. And it is critical for all businesses, large and small alike. In VoIP networking, the ability to always keep the network up and running is called High Availability (HA) and it can mean several things.[...]