Siemens M1 - Manual (Page 7)

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gsm-m1-e.fm GSM M1 Module, English: A24859-N4000-A100-1-7677
GSM Module M1
26.2.96
The GSM Module M1 has interfaces for the power supply, for control and data trans-
mission, for an external antenna and for a SIM card as well as an LED that indicates
operating statuses. These interfaces will be described below. For a detailed description
including pin assignment, see the section entitled “Technical data”
.
The GSM Module M1 must have a SIM card to operate in the GSM network. To install
this card, press the yellow button to eject the carrier and insert the SIM in the carrier.
Then push the carrier into the housing, making sure that it locks into place.
The serial interface is used for controlling the GSM Module M1 as well as for data, fax
and SMS transmission.
Connector: 9-pin DSUB (female) conforming to DIN 41652
Pin assignment: See the section entitled “Technical data”
Logic: V.24 asynchronous
Baud rates: 2400 - 19200 baud, autobauding
Parity: None
Character format: 8 data bits
Stop bits: 1
Level: Conforming to CCITT Recommendation V.28
The hybrid connector contains the power supply, ignition (for switching the device on
and off) and the connection for the external antenna (GSM 900 MHz antenna). It is con-
nected via the cable supplied.
Pin assignment:
Meaning of pins: See the section entitled “Technical data” .
LED off Device switched off – not ready
LED flashing slowly Device switched on – ready
LED flashing rapidly Device switched on – connection setup
For a detailed function indication, use the corresponding AT commands.
Description of the interfaces
SIM card
V.24 interface
Hybrid connector (manufacturer-specific)
Function LED