NT1-PlusII Cabling-a by hjkuiw354

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									T          CABLING FROM A NETOWRK TERMINATION NT1*


E   NT1 Plus II

    Figure 1 show yet another type of unit designed to provide both telephone and
    computer access to Telstra’s ISDN network.



C
H
                                Figure 1 NT1 Plus II Top View



T
I
P
S
                                 Figure 2 NT1 Plus II Outlets

    The connections to this unit are starting from left to right:

    Telephone Line 1
    Telephone line 2

    14/09/2005                                                      Milcom Communications Pty ltd
              For Enquiries and Bookings call: 1300 369 320 or go to www.milcom.com.au
T          CABLING FROM A NETOWRK TERMINATION NT1*


E   USB interface to the computer
    RS232 computer interface
    U Interface
    Sbus interface used for connecting to ISDN Terminal Equipment (TE)




C   Cabling on an NT1 Plus II

    With reference to Figure 1 and Figure 2 from Part A, the NT1 Plus II has a socket for
    the carrier line and two analogue telephone outlets.

    Where an NT1 PLUS II is installed Telstra terminates the Lead-in cable onto a RJ45



H   8P8C connector. (8P8C stands for 8 position with 8 connections. Just a fancy name
    for an RJ45 socket).

    Telstra delivers a digital service on one pair of the Lead-in. This is an ISDN BRA
    service and the voltage across this pair is nominally 100Vdc.
    The service is extended from the RJ45 socket to the NT1 PLUS III with a fly lead
    terminated at both ends with an RJ45 plug.


                                                                    NT1 Plus II
                                  RJ45




T             Telstra’s
              Lead-in
               cable
                                           Fly lead extending
                                           the service into the
                                               NT1 Plus II
                                                                              This is the U
                                                                               interface




I                   Figure 3 connection of the Lead-in to the NT1 Plus II

    The pair on the Lead-in is terminated at pins 4 and 5 on the RJ45.

    Now comes the complication. When you come across NT1 Plus II and the cabling of
    the analogue phones. To understand this clearly we need to look at the wiring in more


P   details.

    The logical connection, one would expect, is the carrier cable terminating onto the
    carrier socket and the analogue phone lines would connect from the Analogue
    Telephone Sockets on the back on the NT1 Plus II.



S   However, unfortunately, this is not the case. The NT1 Plus II has a back-feeding
    option. The incoming ISDN digital line is terminated on pins 4 and 5. The analogue
    telephones lines are back fed from the NT1 Plus II as follows:

    Line 1 – Pins 3 and 6

    14/09/2005                                                      Milcom Communications Pty ltd
              For Enquiries and Bookings call: 1300 369 320 or go to www.milcom.com.au
T          CABLING FROM A NETOWRK TERMINATION NT1*


E   Line 2 – Pins 1 and 2

    See Figure 10 for details.




C
                              RJ45 Socket                                        NT1 Plus II

                                    1   +                                         Electronics
                                        -         outgoing line – 2
                                    2
                                    3   +                                      Converts digital
                                                  Outgoing line - 1               line to two
                                    4   -
                                                Incoming digital line           analogue lines


H                                   5   +
                                    6   -
        Lead-in cable                             Outgoing line - 1
                                    7
                                    8




                     Figure 4 Wiring of NT1 Plus II on the carriers side




T
    With reference to Figure 4, if you come across the NT1 Plus 1 you will find the
    analogue lines back feeding to the RJ45 socket and then onto the rest of the
    telephones.

    If you are required to install any additional sockets onto either line 1 or 2, the
    recommended method should be:



I   Extend the telephone lines from the sockets marked Line 1 or 2 to a new telephone
    socket next to the NT1 Plus II and then connect it to any additional sockets.

    The reason for this being the recommended method is, that it allows you to provide
    what the customer needs, without having to access the RJ45 installed by Telstra.



P   For more information about this or any other Communication queries contact Milcom
    on 1300 369 320




S
    14/09/2005                                                      Milcom Communications Pty ltd
              For Enquiries and Bookings call: 1300 369 320 or go to www.milcom.com.au
                                                   Training
                                                         BBD-08      A.D.S.L.




T       1    ACA (AUSTEL TRAINING

    Registration:
                         COURSES)

    CAB-01 Open Registration
                                                         IT-01
                                                         IT-02
                                                                            4    INFORMATION
                                                                                 TECHNOLOGY
                                                                     Connecting Computers
                                                                     Local Area Network (LAN)
    CAB-02 Restricted Registration



R
                                                         IT-03       Wide Area Network (WAN)
    CAB-05 Occupational health & Safety (NTC             IT-04       Introduction to ATM
             001)                                        IT-05       Advanced ATM
    CAB-06 Electrical Principles 1 (AC/DC Theory         IT-06       Professional business Strategies
             – NTC 009)                                              for the Internet
    Endorsements:                                        IT-07       Creating an Internet Marketing Plan
    CAB-08 Category 5 Structured Cabling (NTC            IT-08       Implementing Internet Marketing
             019)                                                    Plan



A
    CAB-09 Coax Cabling (NTC 020)
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                         COURSES                         OHS-05      RF Awareness
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N   CAN-08
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    CAN-10
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    CAN-15
               Cable Jointing Refresher
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               Advance Cable Jointing
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                                                         SPC-05 Alarm Installers Course



I
               External                                  SPC-06 Advance Alarm Installers Course
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               (CPE)
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N
    CAN-24     Main Cable Hauling


                         3    BROADBAND
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    BBD-02     CATV Customer Premises
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G   BBD-03

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        14/09/2005                                                     Milcom Communications Pty ltd
                  For Enquiries and Bookings call: 1300 369 320 or go to www.milcom.com.au
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               assistance                                             Security
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               Assistance                               ICA30399      Certificate III in Information



R
    RPL-03     Certificate level II – IV without                      Technology (Network
               Mentor assistance                                      Administration)
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                                                        ICA40399      Certificate IV in Information
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A
                                                                      Technology (Technical
    RPL-08     Complete Training Package with
                                                                      Support)
               Mentor assistance
                                                        ICA40799      Certificate IV in Information
                                                                      Technology (Systems
                  8    QUALIFICATIONS                                 Analysis and Design)
                                                        ICA50499      Diploma of Information
    Telecommunications



I
                                                                      Technology (Network
    ICT20402      Certificate II in                                   Engineering)
                  Telecommunications Access             Electrotechnology
                  Network                               UTE30699 Certificate III in
    ICT20202      Certificate II in                              Electrotechnology Data
                  Telecommunications                             Communications
    ICT20302      Certificate II in                     UTE31199 Certificate III in


N   ICT30202

    ICT30302
                  Telecommunications Cabling
                  Certificate III in
                  Telecommunications
                  Certificate III in
                  Telecommunications Cabling
                                                                 Electrotechnology Systems
                                                                 Electrician
                                                        Contact Centre
                                                        ICT20102      Certificate II in Customer
                                                                      Contact
                  and Customer Premises                 ICT30102      Certificate III in Customer


I   ICT40202


    ICT40302
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                  Certificate IV in
                  Telecommunications
                  Engineering
                  Certificate IV in
                                                        BSZ40198
                                                                      Contact
                                                        Assessment and Workplace Training
                                                                      Certificate IV in Assessment
                                                                      and Workplace Training

                  Telecommunications


N   ICT40402


    ICT50202
                  Computer Systems
                  Certificate IV in
                  Telecommunications
                  Network Planning
                  Diploma of
                  Telecommunications


G   ICT60202
                  Engineering
                  Advanced Diploma of
                  Telecommunications
                  Engineering



       14/09/2005                                                     Milcom Communications Pty ltd
                 For Enquiries and Bookings call: 1300 369 320 or go to www.milcom.com.au

								
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