In the development of networking and echo cancellation, it is very important to be able to provide clear, uninterrupted speech. Voice quality testing software, with its simple and easy-to-use user interface, provides tools for voice quality testing and analysis for all types of voice communication networks. Typical communication networks include: VoIP, PSTN, ATM, Frame Relay, and wireless communication networks.

Lanya's voice quality testing software VQT uses three widely accepted algorithms for voice quality comparison: Perceived Call Quality Assessment (PESQ LQ/LQO P.862/P.862.1), Perceptual Analysis Measurement System (PAMS P.800), and Perceived call quality measurement (PSQMP.861). PESQ is an objective measure of subjective listening tests on the telephone system. PAMS predicts overall listening quality without actual subjective testing (according to human subjective perception of speech quality, an expensive and time-consuming process). PSQM is a subjective quality test that predicts speech coding without subjective testing. Lanya's VQT software performs PESQ LQ/LQO, PAMS, and PSQM(+) operations simultaneously for two voice files (reference file and degraded file), and gives the corresponding calculation results through intuitive graphics or tables.

Main features:

Manual or automated operations can be performed using BlueAsia's AFT, ATS, PacketGen/PacketScan, DCOSS, or T1/E1 analysis software.

Test the voice quality of all telecom networks.

Measure the impact of packet jitter on voice quality in VolP networks.

Measures voice quality in Frame Relay networks.

Analyze the impact of speech compression coding on speech quality in wireless networks.

PESQ LQ/LQO calculations are provided along with measurements of active speech level, noise level, delay, jitter, cutoff and power.

Provides PAMS Listening Effort-LE values and Listening Quality-LQ results.

Provides PSQM(+) mean subjective score (MOS) results.

Intuitive graphical and tabular results.

Use automatic mode to automatically run the VQT software on the network against a user-defined network driver.

All results are fully and automatically recorded and can be imported back into the VQT software.

Full remote control.