central office switching system meaning in English
中心局交换系统
Examples
- A digital central office switching system made by lucent . it is typically used as an " tandem switching office , switching long distance phone calls . see 5ess
朗讯公司生产的一种数字市话局交换系统。通常作为一种汇接交换局，转接长途电话。参见5ess 。