Installation Instruction

Ref : SCT TMO MOD SPEC 662
Rev.: B
Ref. sec. :
Date:
18/11/2004
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MO2XX module – Confidential under NDA
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3.3 NETWORK LED
Two external pins of the module are dedicated to network and alarm LEDs:
- LEDR
- LEDG
Figure 4
Network LED connection
3.3.1 Network / Low BATTERY
The network/battery indication consist in by a 30ms flash with period of 2 s.
The flash can take 3 colors:
•
green when network attached and battery ok.
•
orange (green + red) network attached and battery low.
•
red no network and battery low.
The battery threshold is 3650 mV.
3.3.2 Messages
The message received indication takes place after the network/battery indication, it consists in 3 successive
20ms red flashes. It indicates the presence of a new SMS or voice mailbox.
3.3.3 Handfree call
During a handfree call (with at+vip=1 during a call), the led becomes alternately red and green with a period
of 1 s. Handfree led mode has priority over other modes (Network,Messages…)
LEDR or
LEDG