Usage: | Telephone, Workstation |
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Type: | Wired |
Support Network: | Ethernet |
Information content: | Voice |
Condition: | New |
Transport Package: | Box |
Customization: |
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Suppliers with verified business licenses
Test item | Condition/Requirement |
Impedance | ISDN:4B3T POTS:115nF//820 +220 |
DC Current | 100mA |
DC series resistance |
≥12.5Ω |
Insertion loss/ distortion for ISDN |
1KHz≤1.5dB |
40-80KHz≤2.0dB | |
Insertion loss /distortion for POTS |
1KHz≤1.0dB |
0.2-4KHz-1KHz≤1.0dB | |
Return loss for ISDN |
1-40KHz≥16.0dB |
40-80KHz≥14.0dB | |
Return loss for POTS |
0.2-1.6KHz≥15.0dB |
1.6-3.4KHz≥12.0dB | |
ADSL insertion loss |
120-170KHz≤3.0dB |
170-2208KHz≤1.0dB | |
Stop band attenuation |
138-150KHz≥55.0dB |
150-2208KHz≥65.0dB | |
Group runtime distortion | 1-80KHz≤20nS |
Unbalance attenuation | 0.05-3.4KHz≥46.0dB |
3.4-30KHz≥40.0dB | |
30-1104KHz≥45.0dB | |
1104KHz-5MHz≥30.0dB |
Suppliers with verified business licenses