Make Call frame for Nokia 3310

[Irfan Habib]

Hi,

As part of my interfacing project I need to interface
a nokia 3310 with a microcontroller (89c52), which
will dial to phone when some interrupt is generated.

Obviously I have to manually generate the frames and
send to the phone in order to make it dial however, I
dont understand one think about the documentation of
the FBUS make call frame:

 s Make call             { 0x0001, "number", type,
block }
                              where type:
                                      0x01 - data call
                                      0x05 - voice
call
                                    block:
                                      data call (non digital lines):
                                       
0x02,0x01,0x05,0x81,0x01,0x00,0x00,0x01,0x02,0x0a,
                                       
0x07,0xa2,0x88,0x81,0x21,0x15,0x63,0xa8,0x00,0x00
                                      data call (digital lines):
                                       
0x02,0x01,0x05,0x81,0x01,0x00,0x00,0x01,0x02,0x0a,
                                       
0x07,0xa1,0x88,0x89,0x21,0x15,0x63,0xa0,0x00,0x06,
                                        0x88,0x90,0x21,0x48,0x40,0xbb
                                      voice call:
                                        0x01, 0x01, 0x05, 0x81/0x00, sendnum,
0x00, 0x00, 0x01
                                        where:
                                          sendnum (own
number sending):
                                              0x01:
preset (depends on network)
                                              0x03: on
                                              0x02:
off

Now how does the message start with:
0x0001 or 0x01

and what is the difference b/w voice call and data
call,

DO I have to include all the hexdecimal sequence
mentioned for digital lines and non-digitallines, or
just any hexdecimal number is fine?
And what baudrate does the nokia 3310 work, I mean I
can set the microcontroller to 100s of bps but It wont
work unless both sides have the same baudrate.



                
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