PRI is not a "form of T1". It is a flavour of the ISDN protocols that
can run over a T1 (it can also run on an E1).
So any T1 circuit is suitable for PRI, as long as the hardware/software
at both ends is able to provide a D-channel (and associated signalling).
On 2/23/2010 2:56 PM, Johannes Vanderknyff wrote:
My understanding (and I reserve the right to be wrong) is that PRI is a form
of T1. Specifically, it takes one of the 24 channels as a signalling channel
for the remaining 23 voice channels. (As compared to a robbed bit T1, where
it takes some of the bits within the voice channel and uses them for
signalling).
Typically PRI hardware is more expensive than T1 hardware. (At least from my
experience when working with Nortel equipment and what Bell probably has at
the CO) but PRI has more capabilities than robbed-bit T1 when it comes to
transfers, return codes, etc.
http://en.wikipedia.org/wiki/Digital_Signal_1#Inband_T1_versus_T1_PRI
On Tue, Feb 23, 2010 at 2:43 PM, Bruce N<[email protected]> wrote:
Hi Guys,
I am wondering if any of you guys have experience with converting a T1 to a
PRI. I have a situation where Bell says there is no facility to install a
PRI circuit but there are two T1 circuits already installed on site. I can
disconnect both or one in favor of PRI. The T1s are provided by yet another
company but of course they are leasing Bell lines.
They are just complicating and delaying the whole process even with my
option of converting T1 to PRI.
Any thoughts? it will help me understand the feasibility better and maybe
train those lazy order managers on it.
Thanks,Bruce
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