Pub. 42004-735L2D
M
ODEL
LE300
S
ERIES
W
ALL
-M
OUNT
P
AGE
/P
ARTY
®
L
INE
E
XTENDERS
Page 11 of 53
p:\standard ioms - current release\42004 instr. manuals\42004-735l2d.doc
02/16
Party Line Audio Transmission
A pair of Model LE300 Line Extenders provides full duplex party line audio between two Page/Party
®
system cables, for party lines one through five. During on-hook conditions of the party lines (meaning no
handset stations are in-use), the LE300 will mute the local party line analog circuits. If it is necessary to
have party line audio enabled even when no stations are off-hook, DIP switch SW6-3 may be closed to
disable this muting feature. This switch affects the on-hook muting function of all five party lines
simultaneously. Refer to Figure 7 for the location of switch SW6 on the main PCBA and the table below
for setting this option.
Table 10. Party Line On-Hook Muting Setting on Main PCBA
SW6-3
Party Line On-Hook Muting
Open*
Enabled – local party lines are muted when no handset stations are in-use.
Closed
Disabled – party line audio is never muted.
N
OTES
:
1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Party Line Off-Hook Detection
The Model LE300 Line Extenders provide off-hook detection on the local Page/Party
®
system cable for
party lines one through five. An off-hook condition means a handset station is in use. If multiple line
extenders are connected to the same Page/Party
®
system cable segment, only one off-hook detector can be
enabled. If connecting an LE300 to the same system cable segment as an ADVANCE Page/Party
®
Interface (PPI) card, disable the LE300 off-hook detection for party lines one and two. The PPI card
contains off-hook detection for party lines one and two.
Several shorting clips (P6–P15) are used to enable the off-hook detection feature on party line one through
five. Two shorting clips are associated with each party line and must be set to the same position for proper
operation. Party lines one through five are configured independently. Refer to Figure 7 for the location of
P6–P15 on the main PCBA and the table below for setting this option.