What is a difference between ISDN PRI & Channelised E1 ?

Answer Posted / rajendran chinnaveeran

E1 is 2 MBPS data carrying channel (Pipe) consists of 32
channels of 64kbps data in which Ch0 and Ch15 used for
Signalling and control function and other 30 Channels are
used for data/voice communication.

ISDN PRI is also like E1 with additional feautures like
fast and reliable call setup facility and holds detailed
information about the calls, which will be useful for call
setup, clearing and billing. It also have 30 TCH in 2 MBPS.

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