Yeastar Technology, PBX, models:

K2 VoIP PBX	Hardware Installation Manual
MyPBX	User Manual
MyPBX Enterprise	User Manual
MyPBX Standard	Administrator'S Manual User Manual
MyPBX U100	Installation Manual
MyPBX U200	Administrator'S Manual
MyPBX U300	Administrator'S Manual
MyPBX U520	Installation Manual
MyPBX-SOHO	Extension User Manual Administrator'S Manual
N412	Administrator'S Manual
N824	User Manual
S-Series	Administrator'S Manual Getting Started Manual
S100	Installation Manual
S20	Extension User Manual Administrator'S Manual Installation Manual
S50	Installation Manual