Do We Still Need Tech Controllers?
10 years ago, Tech Controllers (MOS 2821 and 2823) were the Marines who made comm happen. When I hit the fleet in …
SIP Trunking to the VX-900
SIP trunking to the VX-900 from a CallManager or CallManager Express (CME) is fairly straightforward*, up until the point where you try …
QoS Marking: How, Where, and Why
One of the follow-up questions I received from my last QoS post was: Where is traffic marked? Example: voice traffic marked at …