Research On The Design Of Overall Structure And Flow Of Voice Test System Based On Softswitch

Softswitch has entered a mature stage, the domestic telecom operators have also carried on the massive softswitch network construction .Voice business based on softswitch is a key business of softswitch network, and the test of the voice quality is the relative cared question in the communications network.After studying the existing voice test methods thoroughly, based on the development of the voice quality testing system project of the one softswitch network, this thesis has designed a voice quality testing system of routing loopback. The system can be in one point of access, test the whole network, just deploys a probe anywhere in the network, and through a route back, the test methods can test the voice quality between any two points in the whole network. The system can meet the needs of the project, and be suitable to spread in the country. The voice test systems based on softswitch can complete the following three tests: (1) the line quality test, such as delay, jitter, packet loss; (2) to make voice quality testing, such as MOS testing; (3) business transfers to test, such as single-pass, mute, dropped calls, crosstalk, and other tests.In this thesis, we have mainly finished the following work: (1) This thesis proposes the overall structure of voice testing system which based on softswitch; (2) This thesis had flow control on voice testing system based on softswitch, which included the largest number that the system can accommodated; (3) According to interface protocols of foreground-background communication, this thesis implement foreground-background communication of voice detection systems based on softswitch.