CHAPTER 3 NDA-24296
Page 562
Revision 1.0
PA-8TLTR
Tie Line Trunk
SWITCH
SWITCH
NO.
SETTING
STANDARD
SETTING
MEANING
SW4
(SW30
[No.0-3
Circuit]
SW5
(SW40)
[No. 4-7
Circuit]
(When
Trunk Kind
has been set
as 2W
E&M)
1 ~ 4, 6
Setting of Terminating Impedance and Balancing Network
(Valid for E&M)
5OFF
×
Not used
6
ON Speech Line: 2-wire
OFF Speech Line: 4-wire
7OFF
×
Fixed
8
ON
E&M Control
Idle: Ground Busy: Battery
OFF
E&M Control
Idle: Open Busy: Ground
SW4/5
Terminating Imped-
ance
Balancing Network
12346
OFF OFF OFF OFF ON
ON OFF OFF OFF ON
2.16µ F
600Ω
350Ω
1KΩ
0.21µ F
(EIA/TIA -464A)
600Ω