Hi Treg World
re RJ49 connectors for ISDN.  
Yes you can get the same Basic Access connector approved for USA as a Basic 
Access ISDN interface.  This is the S/T reference connector and is refered to 
in FCC pt 68 as 02IS5 port for service order 6.0P. 

The biggest issue is that the PTTs will not provide a Basic rate interface with 
an S / T reference point connection.  They will provide a U reference point 
connection which means that customers must purchase or hire an NT1  Termination 
adapter to convert the provided interface down to the S reference connection.

Youre CTR3 (TBR3) software will need modification.  The ISDN software 
(especially L3) is different to CTR3, you will need to look at Bellcore NI-2 or 
AT&T 5ES or NT DMS types (depending on carrier) for USA.

Hope that this helps:  Bill Ellingford
Motion Media Technology Ltd, UK

----------
From:   [email protected][SMTP:[email protected]]
Sent:   03 August 1999 12:29
To:     [email protected]
Subject:        ISDN interface

Dear everybody

I'm confused about the different use of ISDN connectore in EU and US.

Our situation is:

     we make a Bri ISDN (TRB 3) interface which uses a RJ45 connection

     we want this interface approved by FCC part 68, BUT will use EU ISDN lay
1-3

But as I can see RJ48 connection is used in the US which differe from RJ45 in
the wiring of the modular jack connector.

My questions are:

     is RJ45 used in the US/Canada at all ?

     can we have a FCC approval of a EU ISDN ?


Best regards,


Mr. Kim Boll Jensen
i-data, Denmark

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