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What is definition of E1, E3, T1, T3, BRI PRI How thay work and what is difference ?

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nshahane

  • Jan 8th, 2009
 

A 2.048 Mbps point-to-point dedicated, digital circuit provided by the telephone companies in Europe. E1 is the European counterpart of the North American T1 line, which transmits at 1.544 Mbps, and E1 and T1 lines can be interconnected for international use. E2 through E5 lines provide multiple E1 channels.

saurabh

  • Dec 1st, 2011
 

E-1
Similar to the North American T-1, E-1 is the European format for digital transmission. E-1 carries signals at 2.048 Mbps (32 channels at 64 Kbps), versus the T-1, which carries signals at 1.544 Mbps (24 channels at 64 Kbps). E-1 and T-1 lines may be interconnected for international use.
E3
A term for a digital carrier facility used to transmit a CEPT3 formatted digital signal at 34.368 megabits per second. Encapsulation
T1
An AT&T term for a digital carrier facility used to transmit a DS-1 formatted digital signal at 1.544 megabits per second.
T3
A term for a digital carrier facility used to transmit a DS-3 formatted digital signal at 44.746 megabits per second.

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