Installation Instructions

PX/QX/RX Version 4.30 Installation Manual – Issue C
- 42 -
+ - A B
Engineer
Keypad
+
-
A
B
XiB Bus
Case
OTW
Tamper Disable
XiB
DIL Switch Function
5 4 3 2 1
0 0 0 0 0 PSTN primary
0 0 0 0 1 GSM primary
5
1
ONOFF
BL
TB
GND
A
TA
B
Hook
Line
GSM
GSM Antenna
Avoid running cables
near to the GSM
antenna
SIM Card Slot
Optional Speech/Audio
interface board
Telephone
line
Telephone
When power is applied to the system the GSM module will power up in 3 stages:
1. The XiB communications will start before the end of system settling time (as indicated on the
keypad). During this phase the XIB-comms LED will flash rapidly (awaiting secondary PSU start-
up)
2. The GSM engine will start up after about 20 seconds. During this phase the XIB-comms LED will
flash approximately once per second.
3. Once powered up, the GSM engine will be configured automatically and will attempt to acquire a
service connection. This phase may take several minutes and no GSM calls should be attempted
during this phase.