JY型单路IP电话计费器是用于对电话用户的通话过程进行计时计费的计量器具。
JY-type single IP phone charging device is used to process phone users call timing and charging of the measuring instruments.
JY型单路IP电话计费器是用于对电话用户的通话过程进行计时计费的计量器具。
JY-type single IP phone charging device is used to process phone users call timing and charging of the measuring instruments.
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