This corpus comprises 3,077 entries uttered by 285 speakers of different dialects, ages and various educational levels (144 males and 141 females), recorded over the fixed telephone network. The database comprises 7,239 Chinese stocks. Speech samples are stored as a sequence of 16-bit 8kHz WAV for a total of 7 hours of speech. The total capacity of the data is 373 Mb. Each speaker read 15-30 items. Text files are stored in Unicode format. All data have been proofread manually. The transcriptions include non-speech markers (background noise, background speech, speaker sounds) as well as markers for mispronunciation, channel distortions, words left-out and duplicates. The corpus aims to be applied to the testing and telephone natural speech recognition system.