NT8D14 Universal Trunk card Page 603 of 894
Circuit Card Description and Installation
Configuration

The trunk type for each unit on the card as well as its terminating impedance

and balance network configuration is selected by software service change

entries at the system terminal and by jumper strap settings on the card.

NT8D14 has a reduced jumper strap setting on the card. There are only three

jumpers, J1.X, J2.X, and J3.X on each channel. Tables 185, 186, and 187

show the functionality of these three jumpers.

768A Tip Tip Tip 68B Ring Ring Ring
69A CP AN/A 69B MB RG N/A
Table 184
Universal trunk card – backplane pinouts (Part 2 of 2)
Trunk
Number
Back-
plane
Pin
Signal
Back-
plane
Pin
Signal
RAN
mode
Paging
mode
Other
modes
RAN
mode
Paging
mode
Other
modes