use pdu format for send persian sms by gsm modem

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please help me

MIDL

if (!comPort.IsOpen)
               comPort.Open();
           comPort.DiscardInBuffer();
           comPort.DiscardOutBuffer();

MIDL

atCommandStr = "AT";
           comPort.WriteLine(atCommandStr + (char)13);
           messageTXT.Text = comPort.ReadExisting();
            //baraye moshakas kardan halate PDU
           atCommandStr = "AT+CMGF=0";
           comPort.WriteLine(atCommandStr + (char)13);
           messageTXT.Text = comPort.ReadExisting();
           atCommandStr = "AT+CMGS=20";
           comPort.WriteLine(atCommandStr + (char)13);
           messageTXT.Text = comPort.ReadExisting();

MIDL

string path;
           //path = "0681398647575611000B819083660786F00008FF06062A0633062A" + Char.ConvertFromUtf32(26);
           path = "0681398647575611000B819083660786F00008FF06062A0633062A" + Char.ConvertFromUtf32(26);
           comPort.WriteLine(path + (char)13);
           //read immediately response
           messageTXT.Text = comPort.ReadExisting();
           comPort.Close();

run this code but do not send sms
where is problem ?

Posted 10-Jun-11 21:40pm

HamidHafez

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Kim Togo · Answer 1 · 2011-06-10T23:14:00

Solution 1

Perhaps you are missing a timestamp in the PDU message.

0681398647575611000B819083660786F00008FF06062A0633062A is converted to:

SMSC#9368747565
Sender:09386670680
TP_PID:00
TP_DCS:08
TP_DCS-popis:Uncompressed Text
class: "0"
Alphabet:UCS2(16)bit
تست
Length:3

Check out this links:

Online PDU Encoder and Decoder[^]

Library for Decode/Encode SMS PDU[^]

http://www.dreamfabric.com/sms/[^]

Posted 10-Jun-11 23:14pm

Kim Togo

Comments

thatraja 11-Jun-11 7:25am

Good bunch Kim, 5!. I have bookmarked too.

Kim Togo 11-Jun-11 12:03pm

Thanks :-)

SvenMe · Answer 2 · 2011-06-11T08:39:00

Instead of:

MIDL

path = "0681398647575611000B819083660786F00008FF06062A0633062A" + Char.ConvertFromUtf32(26);
comPort.WriteLine(path + (char)13);

do:

MIDL

path = "0681398647575611000B819083660786F00008FF06062A0633062A";
char eof = Convert.ToChar( 26 );
comPort.Write( path + eof );

best regards

edit.
i just checked your pdu length.

MIDL

atCommandStr = "AT+CMGS=20";

should be

MIDL

atCommandStr = "AT+CMGS=26";

in general:
AT+CMGS = (pduString.Length / 2) - 1

HamidHafez · Answer 3 · 2011-06-14T01:38:00

Solution 4

Thanks From All
I Find My Problem
When Decode In Pdu Must Send Sumber Be Whitout 0
For Example

Send To:935421542
Message:دلتا سافت

Pdu Code:00110009A139451245F20008AA12062F0644062A06270020063306270641062A

After Decode:

CSS

Service center number:
Service center time stamp: 01/01/0001 12:00:00 ق.ظ
Message reference #: 0
Direction: Submited
Phone number: 935421542
Status report indication: False
Message:
دلتا سافت

This Pdu Format Is True

Posted 14-Jun-11 1:38am

HamidHafez

Comments

RajabzadehSara 8-Sep-12 3:37am

I will send persian sms with gsm modem in C#, i have a problem, when i send a message, text message isnt correct, forexample textmessage = 'سلام', i recived '????'
please help me. Tanks.

Member 13443730 31-Oct-17 18:10pm

Hello Hamid can you please share with me full working code i'll be really appreciated

HamidHafez · Answer 4 · 2011-06-11T00:33:00

Solution 2

i am try
http://twit88.com/home/utility/sms-pdu-encode-decode[^]

and use follow code

VB

AT+CMGW=17
07929083660786F011000B929063787465F50004AA032A332A

///////////////////////////////////////////////////////////////////////////
phone number for send :09386670680 and phone number for receive :09368747565
but again error

Posted 11-Jun-11 0:33am

HamidHafez

Comments

Kim Togo 11-Jun-11 12:03pm

Use comment under my solution or else I do not get any email notify.
Perhaps the mobile operator expect full msisdn number ?
+4520908070 ? Or try to not define "Sender" . You cannot send sms as another person only the number defined by the mobile operator.

use pdu format for send persian sms by gsm modem

4 solutions

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