Huawei SSN1D12S Overview SSN1D12S is a PDH interface switching board, receives and transmits 32xE1/T1 electrical signals, can be used on Huawei OSN 1500B, OSN 2500, OSN 3500, OSN 7500 when work with PQ1 or PQM. SSN1D12S part number is 03026728, model name is D12S. SSN1D12S Specification Optical Interface Parameter Nominal bit rate 1544 kbit/s 2048 kbit/s Line code pattern B8ZS and AMI HDB3 Waveform at the output interface Complies with ITU-T G.703. Signal bit rate at the output interface Allowed attenuation at the input interface Allowed frequency deviation at the input interface Complies with ITU-T G.823. Input jitter tolerance Complies with ITU-T G.824. Complies with ITU-T G.823. Anti-interference capability at the input interface - Complies with ITU-T G.703. Reflection attenuation at the input/output interface Output jitter Complies with ITU-T G.823 and G.824. Mapping jitter Complies with ITU-T G.783. Combined jitter Jitter transfer function - Complies with ITU-T G.742. Impedance (ohm) 120 (E1), 100 (T1) Mechanical Specifications Dimensions (mm) 22.0 (W) x 125.2 (D) x 261.4 (H) Weight (kg) 0.4 Q: How many versions does D12S have? A: The D12S is available in N1 version. Q: Whats the difference between D12S and D75S? A: D75S and D12S is E1 interface board for PQ1, D75S is 75ohm, D12S is 120ohm. Q: Can I use 75ohm cable connect on D12S? A: No, you cant, if you use 75ohm Cable, please choose D75S interface board. To avoid incompatibility, please tell Thunder-link.com sales team your resistance. Q: Does D75S /D12S come together with PQ1 board? A: Yes, D75S / D12S price is inclusive in PQ1 board Shipment
