ITS Telecom CGW-T Installation And Programming Manual page 27

5.2.3 CGW-TS Diagnostics
Perform the diagnostic procedure as follows:
Connect an analog telephone directly to the trunk connector (RJ-11) on the unit front
panel.
Pick up the receiver and listen to the dial tone:
- A continuous dial tone indicates that the unit is working correctly and ready for
programming.
- A busy dial tone indicates that there is a fault. Check which LEDs are lit and find
the error in the table in Paragraph 5.2.2. You cannot program the unit until you
resolve the problem and hear a continuous dial tone.
- No dial tone indicates that the GSM network signal is too low to complete
registration. Remove your SIM card and replace it with a card from a GSM
network that provides a higher signal level. Enable the roaming parameter (see
command *500 in the programming table), and then replace the SIM card with your
original SIM card.
NOTE
All cellular calls you now make from your CGW-TS will be routed through the
alternate GSM network that you used to complete your registration.
CGW-T/TS/D Installation and Programming Manual 21