NEC 2400 ipx Page 514, Note: Set the SW04 to determine the 4-wire bus mode referring to t he following.

CHAPTER 3 NDA-24296
Page 514
Revision 1.0
PA-8ILCE-A
ISDN Terminal Line Circuit
OFF
•Short Passive Bus mode: This mode is also a point-to-multipoint mode, in which a maximum of eight terminals can be
connected anywhere on the bus. Note that the bus length is limited to 200 m in this case.
•Extended Passive Bus mode: This mode is a point-to-multipoint mode, in which up to eight terminals can be connected.
Note that the terminals must be connected within 50 m from the end of the bus cables as shown below.
ma x 60 0 m
Modular Rossete
ILC TE
max 400m
Modular Rossete
TE TE
max 50m
max 200 m
Modular Rossete
ILC
TE
TE
Modular Rossete
Modul ar Rossete
Terminals can be connected any location on the bus.
Note: Set the SW04 to determine the 4-wire bus mode referring to t he following.
ILC
( in t he c ase of 0. 5φ [mm])
(in the case of 0 .5φ [mm])
(in the case of 0.5φ [mm])
(with te r m in ating
resistor (100Ω))
(with terminating
resistor (100Ω))
(with terminating
resistor (100Ω))
ON
•Point - to-Poi nt mode: In this mo de one T er min al Eq uipment (TE) can be conne ct ed at the end of up to a ma ximu m of 600
m of cable as shown below.