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What skills do telecom outside workers need? Please explain in detail. Thank you!

You have to know the cable, know how to connect it, know how to check the line, know how to connect the power distribution, and know what causes the failure. You can go to work outside, and you'd better be able to repair telephone faults. The salary varies from company to company, but at least it should be above 1500. Generally, there is a commission for repairing a line outside the line. How much does it cost to repair a line?