I am trying to send an SMS using hyper terminal in windows XP pro. I am connecting my Satellite Phone (Motorola Iridium 9505A) to my notebook via serial cable (RS232) .

Below are the sample commands which I use to send an SMS to my email via Motorola 9505A. An error occurred after I press <Ctrl+Z> to execute the SMS.

The message that I want to sent is: -

"megat@geoid.biz testing from 9505A"

Header of the message (pdu format) is: -

00110002912a0000AA

Octet(s) Description Example:-

00 Length of SMSC information 00 Information is set by phone

11 First SMSSUBMIT octet PDU Format indicator (layout)

00 Message Reference (00 =Reference number is set by phone)

02 Length of phone number (2)

91 Format of phone number (91=International)

2a Phone number (*2 = Uses number stored in phone)

00 Protocol identifier (Type 0)

00 Data coding scheme (7bit)

AA Validity period (AA Means 4 days)

length of the pdu is: -

38

length of the message is: -

22

Sample AT+ commands used in hyper terminal are as follows: -

at

OK

at+cmgf=0

OK

at+cmgs=38

> 00110002912a0000AA

> 22

>DF2394C079ECBEF34D9254EEB41F4F29C9E769F4166F9BB0DCAD560B520

+CMS ERROR:003


Probably I have missed something or the way I do testing is not correct. I hope somebody can assist me on this matter.