The project hope is realized in a local area network (LAN) a one-to-many voice calls function,
At present USES the UDP transport protocol for speech signal transmission,

Parameters: the sender USES the 8000 hz sampling rate, UDP packet size of 640 byte; The receiver Buffer size of 640 byte,

Phenomenon: when the receiver in a voice broadcast, clear, but periodically intermittent,

Consult everybody!