MAIN PCBS
B044/B045/B046 6-12 SM
6.5.3 NCU (NETWORK CONTROL UNIT)
The NCU implements the interface between the fax system and the telephone
network. An NCU is standard on model B046, and is included as part of the fax
option for B044 and B045.
North America version
Europe/Asia version
Jumper on Europe/Asia version
TB1 Jumper TB1 must be opened on machines installed in Hong Kong.
Surge
Protect
Surge
Protect
Noise
Filter
Surge
Protect
Noise
Filter
Currect
Detect
DC-Loop L-Trans
H-Trans
Ringing
Detect
JP (Dry Line)
JP (Dry Line)
LINE
TEL
CMLSW
BR
OHDI Sw.
FG
Surge
Protect
TRXD
OHDISW
CMLSW
HOOK0
HOOK1
RITONE
EXRING
R1
T1
RING
TIP
NCU
B046D555.WMF
Surge
Protect
Surge
Protect
Noise
Filter
Currect
Detect
DC-Loop L-Trans
Ringing
Detect
LINE
TEL
CMLSW
BR
DO Sw.
FG
GS
RITONE
DCLSW
TRXD
DOSW
OHDISW
CMLSW
HOOK0
HOOK1
EXRING
RCSEL
GSSW
GS
R1
T1
GS
R1
RING
TIP
T1
SHUNT
OHDI Sw.
SHUNT
NCU
Surge
Protect
B046D556.WMF
To Next Page
Loading...
