Instruction manual

ACU-1000 Operations Manual
Interoperability Now 2-45
2.12.6 LP-2 Jumper Settings
The LP-2 module has several jumper settings. The factory defaults should work well for the
majority of standard telephone sets.
Table 2-16 Jumper Settings LP-2
Input/Output Definition Setting Level Jumper
Microphone In 2 Wire Input
High
-6 dBm
JP3
Norm
-9dBm *
JP3
Low
-12 dBm
JP3
Handset Speaker 2 Wire Output
High
-3 dBm
JP1
Norm
-6 dBm *
JP1
Low
-9 dBm
JP1
Loop Current
Pins 2-3
50 mA
JP5
Pins 1-2
20 mA *
JP5
* denotes factory default setting – Should work well for most telephone sets
JP5
LP-2
Ethernet
Connector
. ..
JP1
LOW
. ..
.
.
.
20 mA
50 mA
U3
NORM
HIGH
. ..
JP3
LOW
.
..
NORM
HIGH
2W INPUT
2W OUTPUT
LOOP CURRENT
K2
Figure 2-13 LP Module Showing Jumper Locations