Help me in the FBUS protocol

Thanks for ur suggestio sir,

But, i got the some ack from the phone by trying the below frame:
RData1[]={0x1E,0x00,0x0C,0x02,0x00,0x31,0x00,0x01,0x00,0x01,
0x02,0x00,0x07,0x91,0x19,0x89,0x58,0x00,0x45,0x44, //MSC no
0x00,0x00,0x00,0x00,0x15,0x00,0x00,0x00,0x04,0x0A,
0x91,0x19,0x99,0x98,0x62,0x13,0x62,0x00,0x00,0x00, //MOB no
0x00,0xA7,0x00,0x00,0x00,0x00,0x00,0x00,0xC7,0xB4,
0x3C,0x0D,0x01,0x00,0x00,0x00,0x00,0x00};

Here I am filling the Seq.no, and checksums in the program;

After sending, the ack frame I have received is like this:

1e,0c,00,7f,00,02,02,01,1c,70

But actually I have to receive another ack frame as message sent, but I am not getting that. ,

Were you getting the acknowledge after sending the SMS frame before ?

As the phone seems happy with the frame it seems the Msg Centre Number
or mobile no is suspect?


Can you text the the target phone from the keypad ?..
I am assuming it's not the one you are using

Do you have a good signal.. and credit


I have tried a couple of converters and they agree that the message should be
C7 B4 3C 0D... you seem to have an 0x01 where I'd expect a 0

Thank u sir,

"Can you text the the target phone from the keypad ?.. "

i am not getting the above.

please explain

You are trying to use a Nokia 3310 under "computer" control to send a text
to another phone.

Just as a normal phone, with you pressing the keys,
can the Nokia 3310 send texts to the other phone.

Just to test part of the system.

Yes the mobile is working properly to transmit the msg??

Here one more thing is:
In the ack frame the seq. no is changing as follows
1e,0c,00,7f,00,02,02,81,1c,70

i.e the seq no is like 81,82.83..

but i heard that the seq. no varies as 40 to 47 ??????

One more thing, i have the msg centre no. in 3310 in the path

"menu->messages->settings->message centre1->msg centre no"

is this is correct????? if not where can i find it exactely.

I think your encoding of the Message centre number you gave is wrong.

I get
91 98 85 00 54 4

packs to
91 98 85 00 54 4f

encodes to
19 89 58 00 45 f4

Here is my msc no

pls give me the encoded data to place in the frame

NO is: +91 9885005444

Encoded as: 0x19,0x89,0x58,0x00,0x45,0x44

Is it correct or not?

hi giri,
from ur posts i feel u are finding the feedback offered ExperimenterUK quite useful . If that is so, do appreciate that gesture by pressing the thanks button on the right side of the posts which u found useful.
P.s. the last byte is f4h according to EXP, not 44h.