SMS 7-bit encoding doubts in Open AT

Right now I'm writing some software for Sierra Wireless GSM Module - Q2687. This application is written with open AT library supported by GSM module vendor and have to handle special characters in SMS messages. I've set text mode for receiving SMS and started sending messages containing characters from basic characters set extension (see GSM 03.38). I was expecting to receive special character encoded according to this table:

which I found there http://www.dreamfabric.com/sms/default_alphabet.html

It turns out that this characters are encoded completely different. Neither ESCAPE TO EXTENSION TABLE nor that second byte is like in presented table. I found out that encoding is rather like this:

Hex	Dec	Character name	Character
0x20	32	ESCAPE TO EXTENSION TABLE
0x2020	32 32	CIRCUMLFLEX ACCENT	^
0x2028	32 40	LEFT CURLY BRACKET	{
0x2029	32 41	RIGHT CURLY BRACKET	}
0x202F	32 47	BACKSLASH	\
0x203C	32 60	LEFT SQUARE BRACKET	[
0x203D	32 61	TILDE	~
0x203E	32 62	RIGHT SQUARE BRACKET	]
0x20AD	32173	VERTICAL BAR	|

As you can see - something is definitely not the way it should be. Look at VERTICAL BAR encoding - it isn't event coded on 7 bit characters, so what encoding it is? I don't know yet but I have to simply implement conversion (which is quite easy to code) before I will treat received SMS with cstring functions.

I tested this situation with messages sent with Android-based mobile as also with plain old Nokia C1.

If you are familiar with Open AT you can test it on your own:

void SmsCtrlHandler(u8 Event, u16 Nb)

{

}

bool SmsMessageHandler(ascii * SmsTel, ascii * SmsTimeOrLength, asii * SmsText)

{

u16 i=0;

while(i<strlen(SmsText))

TRACE((1,”SmsText[%d]=0x%X”, i, SmsText[i])); //display received message byte by byte

return FALSE;

}

s8 smsHandler;

smsHandler = ald_smsSubscribe(SmsMessageHandler, SmsCtrlHandler, ADL_SMS_MODE_TEXT);