Hello,

Can someone explain the difference between a T1 and an ISDN PRI? I'm
a bit confused on the differences between them.


Thanks.

Greetings,

In simple terms, the difference will vary depending on what part of
the world you are in and how the provider delivers the service,
however at the base level, a TI connection is a single open pipe of E1
capacity, while a PRI INCLUDES structured channels on the PRI build.
In many cases the net effect is very similar, its just that the PRI
has many more configurable items available.

Here in New Zealand a PRI is delivered as 1920Kbps of Data made up
from 30 x 64Kb 'B' channels plus 1 x 128Kb 'D" Management channel,
while our equivalent of the TI is the E1 which is a single open
2048Kbps pipe.

I hope this helps.......................pk.



--
Peter from Auckland.

for defintions of each see

T1/DS1

http://en.wikipedia.org/wiki/Digital_Signal_1

ISDN PRI

http://en.wikipedia.org/wiki/Integra...igital_Network


Basically the difference is that a T1 is a point-to-point WAN circuit
whereas an ISDN PRI uses T1/E1 as it transport to an ISDN switch and
it has a signalling channel ( to setup and tear down calls) and 23
data channels (56KBPS/64Kbps) so it is a switched "circuit" service

An ISDN PRI is a T1 that is running the ISDN protocol. Same concept as an
MPLS or frame-relay circuit. A T1 is a WAN point-to-point circuit and ISDN
is a voice signaling protocol. MPLS and frame-relay are data protocols that
can run on top of a T1 circuit.


"thrdeye40" <thrdeye40@gmail.com> wrote in message
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