digital line signaling meaning in English
数字用户线路信号方式
Examples
- Digital line signalling for intertoll exchange
长途电话交换局间数字型线路信号 - Digital line signalling for manual toll exchange to local exchange
人工长途电话局至市话局局间中继数字型线路信号 - Interoffice junction digital line signalling system for telephone automatic switching network
电话自动交换网局间中继数字型线路信号方式