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技术参数
1 交换制式········模拟控分
2 终端条件
话机类型······双音频
3 通话绳路········五绳路 八绳路
4 信号音·········电讯局音源
内线拨号音·····450Hz,方波,连续
内线回铃音·····450 Hz方波，1秒通，4秒断
内线忙音,错误音··450Hz方波，0.35秒通，0.35秒断
内线证实音····450Hz方波，1秒通
5 馈电
馈电电压·····24伏
馈电电流·····20-30mA
6 线路条件
用户线环路电阻(包括话机)·······小于1千欧
中继线允许回阻············小于2千欧
7 传输特性 5.7.1分机…分机·········································≤ 1.5dB
分机…中继···············≤1.0dB
失真度·················≤7%
8 铃流···················AC90V±15V，空载
9 耐压···················50Hz/100Vrms/1分钟
10 绝缘··················电源对机壳、地均大于10兆欧
11 电源··················AC220V±10%
12 功耗··················≤10VA
13 使用环境················–10~40℃相对湿度小于95%
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多路通电话交换机说明书下载
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: 248365565