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Installing PCBs

2-8 ◆ Section 2: PCB Installation DS2000 Hardware Manual

T1 Trunk PCB

The T1 Trunk PCB (Figure 2-12) provides advanced digital trunking and gives the DS2000 a maximum of

24 trunks in a single PCB slot. The available T1 trunk types include:

● Loop Start and Ground Start (DTMF and Dial Pulse)

● Direct Inward Dialing (DID) Wink Start and Immediate Start (DTMF and Dial Pulse)

● E&M Tie Line Wink Start and Immediate Start (DTMF and Dial Pulse)

Notes

● Although the T1 PCB can connect directly to the telco’s T1 smart jack, a separately-purchased Channel

Service Unit (CSU) between the smart jack and the T1 PCB is recommended. Additionally, your telco

may require a CSU.

● Normally, the T1 PCB connects to the telco’s T1 smart jack or your CSU using a standard straight-

through CAT 5 cable. However, always check the documentation that came with your CSU for cabling

requirements.

● The T1 PCB installs in any universal slot but slot 1.

● A commercially available T1 Tester is recommended.

To install the T1 Trunk PCB (Figure 2-13) (Figure 2-14):

1. Set jumpers

CN7 and CN9 to the T1 position.

The DS2000 T1 PCB requires system software version 03.03.00 or

higher and expanded memory CPU P/N 80025B.

Figure 2-12: T1 Trunk PCB

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