Specifications

Trunk Cards and Connections
86 025-9035AA
Table 5: Nominal Voltages for Audio Daughter Board
Configuring Trunk Cards (702-9037 and 702-9117)
Trunk Card Removal/Installation
Should it be necessary to remove/install a trunk card in the paging terminal, use the
following procedure.
♦ Trunk card removal/installation
1. Remove the front cover.
2. Turn off the AC power.
3. Pull on the two black, nylon, retainer latches and gently wiggle the card out of its
sockets. Slide the card out of the card cage and place it on anti-static foam.
4. Slide the new card into the card cage. Make sure that the nylon latches are
extended toward you. Otherwise, the card edge connectors will not plug in. Push
on the card stiffener to fully seat the card into the card cage.
5. Push on the nylon latches to lock the card into place.
6. Turn on the AC power. After about 30 seconds, you should see the SELECT lights
on each card begin to blink in sequence as the CPU loads software into each card.
Trunk
A/B
JPn Position
(Aud.Daughter)
On-Hook Voltages
(Idle Line State)
Off-Hook Voltages
(Active Line)
AJP1 A
B
M = -48 Vdc or N.O.
M = 0 Vdc or N.O.
M = 0 Vdc Input
M = -48 Vdc Input
JP3 A
B
E polarity = -48Vdc
E polarity = GND
E polarity = -48Vdc Out
E polarity = GND Out
JP5 A
B
E = N.O.
E = N.C.
E = CLOSED Output
E = OPEN Output
BJP2 A
B
M = -48 Vdc or N.O.
M = 0 Vdc or N.O.
M = 0 Vdc Input
M = -48 Vdc Input
JP4 A
B
E polarity = -48Vdc
E polarity = GND
E polarity = -48Vdc Out
E polarity = GND Out
JP6 A
B
E = N.O.
E = N.C.
E = CLOSED Output
E = OPEN Output
Note Be sure to set the Address Switches on the replacement card to the
same as those on the card removed from the card cage. If slot was
empty, see chart of switch settings below.