ISDN

If you are a technology professional, then chances are that you are aware (maybe to the point of annoyance) that everything is getting defined in software these days. We have Software-Defined Networking (SDN), Software-Defined Data Center (SDDC), Software-Defined Storage (SDS), and the list goes on…

Voice over IP for business telephony is old news. But when business enterprises like Cisco connected to the outside world, they still used old-world technology. In the past two years Cisco IT has migrated its big connections to the outside world to Session Initiation Protocol (SIP).  This move has s…