Connector and Signal Type: Terminal block
1.544/2.048MHz RS-485
T1 according to GR-499-CORE (100 Ω)
E1 according to ITU-T G703 (120 Ω)
Maximum Number of Cards: 6
Ordering Information: 1204-0A: T1/E1 (100/120 Ω) module
Figure 5-30: Model 1204-0A option card rear plate
Table 5-12: 1204-0A option card
pin assignments
Pin Assignments
Pin No. Signal Function Description
1 GND Ground Ground
2 1.544MHz/2.048MHz RS-485 A Terminal Square wave
3 1.544MHz/2.048MHz RS-485 B Terminal Square wave
4 GND Ground Ground
5 T1/E1 output A1 GR-499/G.703 Tip
6 T1/E1 output B1 GR-499/G.703 Ring
7 GND Ground Ground
8 T1/E1 output A2 GR-499/G.703 Tip
9 T1/E1 output B2 GR-499/G.703 Ring
10 GND Ground Ground
Model 1204-53 E1/T1 (75 Ω): Specifications
Outputs:
(4) Unbalanced E1 or T1 Outputs
392 SecureSync 2400 User Manual
APPENDIX
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