Re: PRI, T1, E1 daffynitions (was Re: (PM) No answers!)

Alain Fontaine (fontaine@sri.ucl.ac.be)
Fri, 5 Feb 1999 09:01:09 +0100

=C0 (At) 2:04 +0100 5/02/99, Richard Morrell =E9crivait (wrote) :
>
>PRI delivered over T1 =3D=3D 23b + 1 (64k) d
>PRI delivered over E1 =3D=3D 30b + 1 (128k) d

Still no cigar...=20

E1 =3D 2048 kbps =3D 1* 64 kbps for framing and low-level service data
31* 64 kbps available for use

PRI on E1 uses the 31* 64 available, breaking them in
1* 64 kbps D-channel for signaling
30* 64 kbps B-channels for carrying voice or data calls.

/AF

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