A Primary Rate Interface is a ISDN (Integrated Services Digital Network) term describing either an E1 circuit in Europe or a T1 circuit in North America. These are comprised of 30 traffic channels and two signalling channels (E1, 30B+2D – 2.048Mbps) or 23 traffic channels and one signalling channels (T1, 23B+D – 1.544Mbps) respectively.
Get your weekly dose of telecoms terminology delivered straight to your inbox!
We promise, no spam - just clear-cut telecoms terms to keep you on top of your game.
Our YouTube channel offers over a hundred free videos (and counting!) covering a range of technology topics.
Subscribe to our channel to be the first to know when we release new videos:
Use this no-obligation free trial to get a taste of what it's like to be an Mpirical student.
Included with the trial is an all-access pass to the LearningZone, which contains learning tools and other useful resources to help you make the most of your training.