User`s manual

If block monitoring is used (not for UL installa-
tions), jumper between lines 2 and 7 of each
RJ-
31X jack (an RJ-38X already has the jumper).
Set the two pair of jumpers on the board as
follows. Either or both pair may be set to ON.
==JP712 &
JP702 to ON, a user on line 2 will be
switched to line 1 if line 2 is seized.
==JP713 & JP701 to ON, a user on line 1 will be
switched to line 2 if line 1 is seized.
Switching from line 1 to line 2 will not maintain that
user’s connection; however, it will avoid leaving a
user with a dead phone. The user will hear a dial
tone or be joined to the existing conversation, if
line 2 is already in use.
Phone Block Monitoring Note: (Not for use in UL
systems,) If the line continuity monitoring jumper
is set to ON, phone line continuity goes to
Hardwired Zone 10 (Interior Tamper). If Zone 10
is not used for other tampers as well, you must
install a 1000 ohm EOL resistor inside the enclo-
sure across the Zone 10 terminals, This continuity
supervision is different from the software (line
voltage) supervision
Fn#218, which will only report
a phone Trouble after 12 consecutive hourly
checks without sensing phone line voltage.
OUT&% LINE
O”TS:DOE LINE
Figure 2-11 Supervision with RJ-31X
Keypad Expansion Module
Model 8320
Description: Only two keypads can be con-
nected to the standard terminal strip (limit, 2 wires
per terminal). This expansion module allows the
addition of up to six more keypads.
2-18 AT&T Security System 8300 Installer’s Manual