Specifications

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