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× Questions about A400/800/1200 Analog Interface Card

A-1200P O口模块,振铃后,接通,没有&#22768

16 years 1 month ago #817 by miaolin
你3条线就想申请中继,我怎么听着不对劲。是一号通,汇线通,400还是什么东西?电话线是哪个运营商的?中继号码又是从哪里来的?还有,到底是个什么现象?
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