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NI-1 or NI-2 ISDN-PRI Question

NI-1 or NI-2 ISDN-PRI Question

(OP)
Having a Prologic installed with ISDN-PRI T1 service from Verizon. This will be used like a Flex-path for my DID as well as outgoing. The question asked by Verizon is do I want Custon or National? I know this was talked about here on Tek-Tips before, but I can't for the life of me remember the answer.

Can anyone remember, or know the answer?

Mike Higgins

RE: NI-1 or NI-2 ISDN-PRI Question

I am green in this area as I just did my first PRI a few weeks ago, but in the United States it seems that the consensus is National which I believe is NI-2.

RE: NI-1 or NI-2 ISDN-PRI Question

Primary - 4ESS / 5ESS
o Lucent Country/Protocol Setting: 1 / A
o Lucent Country/Protocol Definition: US / AT&T TR 41449, 41459, 62411, 54016, 54019A and 62421

Primary - NI2 - National ISDN-2
o Lucent Country/Protocol Setting: 1 / B
o Lucent Country/Protocol Definition: US / Bellcore TR 1268; NIUF.302; ANSI T1.607

Primary - DMS 100 / 250
o Lucent Country/Protocol Setting: 1 / C
o Lucent Country/Protocol Definition: US / Nortel DMS-250 BCS36/IEC01

Gary L. Smith
Telephone Systems Engineer
The University of Mississippi
Telecommunications Department

RE: NI-1 or NI-2 ISDN-PRI Question

(OP)
Thanks to both of you!

Mike Higgins

RE: NI-1 or NI-2 ISDN-PRI Question

I'm still not sure, so correct me if I'm wrong, but isn't:
NI1- 1 D chan controlling 1 or more T1's--
NI2- 1 primary D chan and one backup (rollover) D chan.

franke

RE: NI-1 or NI-2 ISDN-PRI Question

No, that is facility associated verses non facility associated signaling.

For simplification purpose NI-1 CID but no name, NI-2 name and number ID available

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