Specifications

Trunk Cards and Connections
88 025-9035AA
On the 702-9037 card, the matrix plug is a small board with six rows of connector pins.
The matrix position is selected with the help of the silk-screened labels on the board and
the illustration in Figure 15. Each label points to the two rows of pins to insert into the two
SIP sockets on the trunk card. Orient the matrix so that the Line Type labels are closest to
the front panel of the card.
Figure 15: The Single Trunk Card Matrix Plug
On the 702-9117 dual trunk card, there are two small 702-9122 circuit boards, as shown in
Figure 16, which can be inserted into their circuit connectors four different ways. The
matrix card plugged into socket J3 is for Trunk A, and the one in J4 is for Trunk B. The
selected setting is the one plugged into the connector and facing the legend “1” on the 702-
9117 board.
Figure 16: The Dual Trunk Card Matrix Plug
Note The Matrix cards and Line Types are factory set for your particular
installation from information obtained from your technical staff. In
general, you should not have to change these settings unless your
telephone line configuration changes.
TOP VIEW OF
CARD MATRIX PLUG
E+M
E-E
DID
SINGLE TRUNK
SIDE VIEW OF CARD MATRIX
PLUG AND CONNECTORS
DID
E-E
E+M
Z-30
DID
E-E
E+M
Z-31
1
1
DUAL TRUNK
MATRIX PLUG
FRONT PANEL OF
DUAL CARD TRUNK
DID
E-E
Marking for current
setting (Typical)
Trunk B (Rev D & later)
(Trunk A for Rev A - C)
Trunk A (Rev D & later)
(Trunk B for Rev A - C)