THE LOOPBACK CONTROL METHOD OF COMMON LINE SIGNAL METWORK OF RECEIVING POINT IN ELECTRONIC CHANGE

摘要

The full electronic switching system common line signal network incoming call point loop-back control method provides an incoming signal point message function which may be built within an exchange irrespective of the engagement with the other exchange in a communication network using a common line signal system No. 7 to thereby execute a user test and a common line signal system test without any engagement with the other exchange, such that it can reduce the consumption of resources.