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Westermo GS-01 User Manual

Page 46

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46

6195-2201

SM from the same .

MTI: Message Type Indicator

b1=0 & b0=0 -> SMS-DELIVER (in the direction SC to MS)

b1=0 & b0=1 -> SMS-SUBMIT (in the direction MS to SC)

In text mode is only coded in ”relative” format. The default value is 167 (24 hours).
This means that one octet can describe different values:

VP value

Validity period value

0 to 143

(VP + 1) x 5 minutes (up to 12 hours)

144 to 167

12 hours + ((VP - 143) x 30 minutes)

168 to 196

(VP - 166) x 1 day

197 to 255

(VP - 192) x 1 week

is used to indicate the higher layer protocol being used or indicates interworking
with a certain type of telematic device. For example, 0x22 is for group 3 telefax, 0x24 is
for voice telephone, 0x25 is for ERMES.

is used to determine the way the information is encoded. UCS2 alphabet and com-
pressed text are not supported. Only GSM default alphabet and 8 bit data are supported.

Application to GSM

AT+CSMP?

Current values

GSM to application

+CSMP: 0,0,0,0

No validity period

OK

= PCCP437 alphabet
(8 bits -> 7 bits)

Application to GSM

AT+CSMP=17,23,64,244

= 23 (2 hours, relative
format) = GSM 8 bits
alphabet

GSM to application

OK

Command correct

+CMGD – Delete message

This command shall be used after a read-command in order to delete the any stored
message.

For example:

GSM to application

+CMTI: ”SM”,3

New message received

Application to GSM

AT+CMGR=3 Read it

GSM to application

+CMGR: ”REC UNREAD”,

Unread message

”0146290800”,,”98/10/01,

received from 0146290800

18:19:20+0

on the 01/10/1998 at 18H

0”

19m 20s

Received Message!
OK

Application to GSM

AT+CMGD=3

Delete it

GSM to application

OK

Message deleted