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 Ter minating Impedance and Balancing Network
(Valid for E&M)
5OFF ×Not used
6ON Sp eech Li ne: 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
600
350
1K
0.21µ F
(EIA/TIA -464A)
600