Installing A Bits Wire - Nortel 7400 Hardware Installation

242 Chapter 39 Hardware procedures

Installing a BITS wire

Prerequisites
Procedure steps
NN10600-175 6.1S2
Install a BITS wire from the site timing source to the BITS termination panel.
• Test the signal strength at the end of the connection from the site source
before connecting. The signal strength must be within the range indicated
in ITU-T G703 or ANSI TI.102.
• If the signal is not within the range, fix the problem between the point of
test and the site source. Depending on the length of cable from the site
source, you may need a thicker gauge cable to ensure that the signal
strength.
• Follow "Avoiding damage from static electricity" (page 208) to protect
the unit from damage by ESD or from transferring ESD to other
hardware.
1 If they are not already connected, connect the BITS wires to the external
timing source.
2 At the BITS termination panel plug the connector (D-sub or coax) of the
timing wire (which you may have labeled as reference 0) into the
connector beside the label BITS 0 Rx. This wire will correspond, in
Multiservice Switch systems, to the BITS 0 source and will be associated
with the EE1/0 or the EDS1/0 component.
3 For a redundant timing setup, plug the connector (D-sub or coax) of the
timing wire (which you may have labeled as reference 1) into the
connector beside the label BITS 1 Rx. This wire will correspond, in
Multiservice Switch systems, to the BITS 1 source and will be associated
with the EE1/1 or the EDS1/1 component.