Status Leds; Models - MTX M2M MTX-DIN Series User Manual

5.2 Status LEDs

The MTX-DIN modem has one status LED (view location on device label, section 4.2.1) called "GSM
SYNC" which is handled automatically by the modem and indicates its different operating modes. The
behavior of GSM SYNC LED is configured by AT commands, depending on whether 2G or 3G models
are used.
5.2.1 2G models
The LED mode configuration is set by the AT^SSYNC command
LED behavior ME operating status if AT^SSYNC=1
Permanently off ME is in one of the following modes:
- POWER DOWN mode
- AIRPLANE mode
- CHARGE ONLY mode
- NON-CYCLIC SLEEP mode
- CYCLIC SLEEP mode with no temporary wake-up
event in progress
600 ms on / 600ms off Limited Network Service: No SIM card inserted or
no PIN entered, or network search in progress, or
ongoing user authentication, or network login in
progress.
75 ms on / 3 s off IDLE mode: The mobile is registered to the GSM
network (monitoring control channels and user
interactions). No call is in progress.
75 ms on / 75 ms off / 75 ms One or more GPRS PDP contexts activated.
on / 3 s off
500 ms on / 50 ms off Packet switched data transfer is in progress.
Permanently on Depending on type of call:
Voice call: Connected to remote party. Data call:
Connected to remote party or
exchange of parameters while setting up or
disconnecting a call.
<n> ms on / <n> ms off Not possible: With AT^SSYNC=1, LED signalization is
disabled in SLEEP mode.
25 ms on / 4 * <n> ms off Not possible: With AT^SSYNC=1, LED signalization is
disabled in SLEEP mode.
25 ms on / <m> ms off / 25 Not possible: With AT^SSYNC=1, LED signalization is
ms on / 3 * <m> ms off disabled in SLEEP mode.
5.2.2 3G models
The LED mode configuration is set by the AT^SLED command.
Modem status

GSM CS data call in progress or established

GSM voice call in progress or established

UMTS voice call in progress or established

UMTS CS data call in progress

GSM PS data transfer

UMTS data transfer

ME registered to a network. No call, no data transfer

Limited Network Service (e.g. no SIM, no PIN or during
network search)
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<mode>=1
Permanently ON
Permanently ON
Permanently ON
500ms ON
500ms OFF
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MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX-DIN Family
ME operating status if AT^SSYNC=2
ME is in one of the following modes:
- POWER DOWN mode
- AIRPLANE mode
- CHARGE ONLY mode
Same as for AT^SSYNC=1
Same as for AT^SSYNC=1
Same as for AT^SSYNC=1
Same as for AT^SSYNC=1
Same as for AT^SSYNC=1
SLEEP mode is activated (AT+CFUN parameter
<fun> ≠ 1), but the ME is not registered to the GSM
network (e.g. SIM not inserted or PIN not entered,
and therefore, either no network service or only
Limited Network Service is available.
SLEEP mode is activated (AT+CFUN parameter
<fun> ≠ 1) while the ME is registered to the GSM
network and in IDLE mode.
SLEEP mode is activated (AT+CFUN parameter
<fun> ≠ 1) while the ME is registered to the GSM
network. Additionally, PDP context is activated.
<mode>=2 <mode>=2
<flash>=default <flash>=user defined
10ms ON <flash> ms ON
990ms OFF 990 ms OFF
10ms ON <flash> ms ON
1990ms OFF 1990 ms OFF
10ms ON <flash> ms ON
1990ms OFF 3990 ms OFF
10ms ON <flash> ms ON
990ms OFF 990 ms OFF
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