Installing PCBs
DS2000 Hardware Manual Section 2: PCB Installation ◆ 2-7
2
T1 Trunk PCB
The T1 Trunk PCB gives the system a maximum of 24 digital T1 trunks in a single PCB slot. The available
trunk types include:
● Loop Start (DTMF and Dial Pulse)
● Ground Start (DTMF and Dial Pulse)
● Direct Inward Dial (DID) Wink Start (DTMF and Dial Pulse)
● Direct Inward Dial (DID) Immediate Start (DTMF and Dial Pulse)
● E&M Tie Line Wink Start (DTMF and Dial Pulse)
● E&M Tie Line Immediate Start (DTMF and Dial Pulse)
Refer to T1 Trunking in the DS1000/2000 Software Manual on the System Document CD that came with
your system for more on T1 programming and operation.
To install the T1 Trunk PCB (Figure 2-10) (Figure 2-11):
1. Set jumpers CN7 and CN9 to the T1 position.
2. Plug in T1 Trunk PCBs as required. See System Configuration on page 1-4 for more.
3. Set the mode switch on each T1 PCB to RUN.
4. Using a standard straight-through CAT 5 cable, connect the T1 PCB LAN Connector to the Telco
Smart Jack or your Channel Service Unit.
Although the T1 PCB can connect directly to the telco’s T1 smart jack, your telco may require
that you purchase and install a separate Channel Service Unit (CSU). This unit installs between the
smart jack and the T1 PCB.
Figure 2-10: T1 Trunk PCB
E1
T1
CN9
E1
T1
CN7
CN9
CN7
80061 - 2
1 2 3 4 5 6 7 8
RX1 T
RX1 R
TX1 T
TX1 R
LAN Connector
Pinouts
LAN
Connector
Mode switch
RS232 Port
Straight-Through
CAT 5 Cable
Telco
Smart Jack
T1 Grounding Requirements
Be sure to run a 12 AWG
jumper wire from the SG (Sig-
nal Ground) lug to the ETH
(Earth Ground) lug.
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