NEC NEAX2400 ICS Installation Notes page 6

NEAX2400 ICS ISDN PRI Installation Notes
SWITCH SWITCH
NAME LOCATION
SW0 Parts
Mounted
Face
SW1 Parts
Mounted
Face
ETI-152A
Table 1 ISDN PRI Switch Descriptions (Continued)
KIND OF SWITCH
Dip Switch
ON
1 2 3 4
(Standard Setting)
Dip Switch
ON
1 2 3 4
(Standard Setting)
SWITCH SWITCH
NO. SETTING
ON Impedance Setting:
100 Ω
1
OFF Impedance Setting:
110 Ω
ON Setting of Transmission
Transformer Middle
Point: Ground
2
OFF Setting of Transmission
Transformer Middle
Point: Open
ON Setting of Receiving
Transformer Middle
Point: Ground
3
OFF Setting of Receiving
Transformer Middle
Point: Open
4 ON Not Used (Fixed to ON)
ON Digital PAD ROM
Selection: Special
Specification (PROM
Spec.)
1
OFF Digital PAD ROM
Selection: Standard
Specification (MASK
ROM Spec.)
2 ON Not Used (Fixed to ON)
ON Interface Structure: 24B
DTR Ts
3
OFF Interface Structure:
23B+D ISDN
ON D-Channel Packet
Service: To be provided
4
OFF D-Channel Packet
Service: Not to be
provided
MEANING
Page 6