RJ48 also shown as RJ48X and RJ48S are used for Digital Circuits.
RJ48X Jack is used for either T1 or PRI. Telecom people work with this kind
of stuff. RJ48 is a termination Jack also known
as NIU ( Network Interface Unit ) or SmartJack.
RJ48S Jack term is where your chanalized T1 are terminated, such as 56k
circuits, 64k circuits or DS0 and so forth.
For example, the T1 RJ48x Jack where the service provider terminates the
circuit has 8 connectors such as 1,2,3,4,5,6,7,8
which connectors 1,2,4,5 are where the coper pairs will be connected and the
T1 or PRI terminated. Connector 1 takes wite/blue pair, connector 2 connects
the brown/white pair, connector 4 takes white/orange, and connector 5
takes orange/white pairs. This layout is design for digital circuit
signaling. But if you realy look at this RJ48 is just a term and by hearing
this term you know that is a telecom term.
The RJ45 is a connector term design for Ethernet Networks where four pair
coper are used, the signaling on RJ45 10baseT Ethernet uses only two pairs
1,2,3, and 6. I don't know on top of my head the two pairs signaling specs.
Hope this clarifies your question
Jorge Rodriguez/CCNA
Network Services Analyst
------Original Message------
From: peter whittle <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Sent: June 20, 2000 8:14:45 PM GMT
Subject: RJ45 & RJ48 difference
Hi,
What is the difference between an RJ45 connector as used on 10Bt and an
RJ48
connector as used on 120R Primary rate?
They both appear to be the same 8 pin idc connector.
Thanks
Peter
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Jorge Rodriguez /CCNA
Network Analyst
R&S Networks Inc
1112 Boylston Street
Suite 222
Boston, MA 02115
1-781-614-1294
http://www.netwire.n3.net/
http://www.learncisco.n3.net/
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iWon.com http://www.iwon.com why wouldn't you?
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