Panasonic, Multiplexer, models:

AJ-FX216	Operating Instructions Manual
KX-NCP Series	Important Safety Lnstruct1ons
WJ-FS109	Operating Instructions Manual
WJ-FS28	Service Manual
WJ-FS309	Operating Instructions Manual
WJ-FS616C	Operating Instructions Manual
WJFS216 - SWITCHER	Operating Instructions Manual Service Manual
WJFS316 - DIGITAL MULTIPLEXER	Operating Instructions Manual
WJFS616 - SWITCHER	Operating Instruction Service Manual Operating Instruction
WJMP204 - MULTIPLEX UNIT	Operating Instructions Manual
WJMP404 - MULTIPLEX UNIT	Operating Instructions Manual
WJMS424 - QUAD UNIT	Specifications Operating Instructions Manual
WJRT416 - 16CH DIGITAL RECORDER	Instructions Manual