how to use COM for modem

aleppos · #1 03-Aug-2005, 14:54

hi,

i need help with c++, i want to dail number and send sound in my computer to modem and recive voice from modem .....

Any idea how to begin???????? I will appreciate very much you help.

Thanks for help
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Best regards -
Aleppos team -

aleppos · #2 03-Aug-2005, 17:38

hello,

please any body can help me in any thing about modem......

Thanks.

nkhambal · #3 03-Aug-2005, 17:56

here check this

Serial Programming Guide for POSIX Operating Systems

this isn't in C++ but in C and on Unix. But it will give you some idea.

Thanks,

aleppos · #4 03-Aug-2005, 18:16

hi nkhambal,

thanks very much for help.

i will read it but if you can help me more of that don't forget.

any body know any thing about modem write it please on this thread.

i use windows.

thanks for nkhambal and you.
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kind regards.

maprich · #5 04-Aug-2005, 05:23

In windows you better use TAPI 3.1

This talk about serial programming with modems seems to me antiquated aproach. 1. modems come in many varieties: USB, PCI card etc. 2. You should let the operating system take care of low level communication and your program should take the top->down approach.

In *NIX you just pipe communication with the /dev/modem "file". I am not sure though if the voice modem features are included in the set of AT commands.

aleppos · #6 04-Aug-2005, 07:12

hi maprich,

Thanks for help me.

aleppos · #7 05-Aug-2005, 17:10

hi,

i want to ask about baud rate is it "maximum port speed"

Thanks

nkhambal · #8 05-Aug-2005, 18:28

This is from the linked which I posted

Quote:

The speed of the serial data is most often expressed as bits-per-second ("bps") or baudot rate ("baud"). This just represents the number of ones and zeroes that can be sent in one second. Back at the dawn of the computer age, 300 baud was considered fast, but today computers can handle RS-232 speeds as high as 430,800 baud! When the baud rate exceeds 1,000, you'll usually see the rate shown in kilo baud, or kbps (e.g. 9.6k, 19.2k, etc). For rates above 1,000,000 that rate is shown in megabaud, or Mbps (e.g. 1.5Mbps).

farshad · #9 14-Jun-2006, 05:49

are you on line?

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how to use COM for modem

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