Westermo GS-01 User Manual download pdf (Page 38)

38 6195-2201

Application to GSM AT+CMGF=0 PDU message format

GSM to application OK PDU mode valid

Application to GSM AT+CMGS=14<CR> Send complete MSG in

0001030691214365000004 PDU mode, no SC address

C9E9340B

GSM to application +CMGS: 4 MSG correctly sent, <mr>

OK is returned

The message <pdu> is composed of the SC address («00 means no SC address given, use

default SC address read with +CSCA command) and the TPDU message.

The length of octets of the TPDU buffer is 14, coded as GSM 03.40

In this case the TPDU is: 0x01 0x03 0x06 0x91 0x21 0x43 0x65 0x00

0x00 0x04 0xC9 0xE9 0x34 0x0B, which means regarding GSM 03.40:

<fo>: 0x01 (SMS-SUBMIT, no validity period)

<mr> (TP-MR): 0x03 (Message Reference)

<da> (TP-DA): 0x06 0x91 0x21 0x43 0x65

(destination address +123456)

<pid> (TP-PID): 0x00 (Protocol Identifier)

<dcs> (TP-DCS): 0x00 (Data Coding Scheme: 7 bits alphabet)

<length> (TP-UDL): 0x04 (User Data Length, 4 characters of text)

TP-UD: 0xC9 0xE9 0x34 0x0B (User Data: ISSY)

TPDU in hexadecimal format must be converted into two ASCII characters, e.g. octet

with hexadecimal value 0x2A is presented to the mobile as two characters ‘2’ (ASCII 50)

and ‘A’ (ASCII 65).

+CSAS – Save Settings

All settings specified in command +CSCA and +CSMP are stored in EEPROM if the SIM

card is a phase 1 card or in the SIM card if it is phase 2.

Application to GSM AT+CSAS Store +CSCA and +CSMP parameters

GSM to application OK Parameters are saved

+CRES – Restore settings

All settings specified in command +CSCA and +CSMP are restored from EEPROM if the

SIM card is phase 1 or from the SIM card if it is a phase 2 SIM card.

Application to GSM AT+CRES Restore +CSCA and +CSMP

parameters

GSM to application OK Parameters are restored

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Westermo GS-01 User Manual Page 38