?????????? ?????????? ??????? ??????? (?)

?????????????? ??????????????? imformation signal ?????? ?????????????????? ????????????????? ???????? ????????? ???????????? ?????????? ???????????? signal ?????? ?????????? ?????????????? ??????? signal processing ????????????? signal processing ????? analog signal processing ??? digital signal processing processing(DSP) ??????????? ?????????????????? ??? ?????????????? DCS ??? ??????????? ???????????? DSP ???????????? ????? ?????????

Formatting

Formatting ?? signal processing ??? ????????????????? ?????? ???? ???????????????? ????????????? ?????? signal?????? ?????????? message ???????????????????????? ?????? signal ??? digital imformation, texual imformation, analog imformation ??????????????? formatting ??? ???????? ??????????????? character coding (formatting texual data), sampling, quantization, pulse code modulation (PCM) ??????????????

Digital imformation ????? formatting ????????????????? texual imformation ??????? coder ??????????????????????? ????????????????????? ?????????????analog imformation ??????? ????????? sampling ???????? ???????? quantization ?????????? ????????????? encode ?????????? formatting ????????????????????? ?????? ???????? ?????? sequence ???????????????? ??????????? ???????????????????? baseband channel (?????????? coaxial cable ) ???????????? ?????????????????? ??????????????? ???????? ?????? baseband channel ????? waveform ???????? ????? ???????? ????????????? ??????????? ?????????????????????? waveform ????????? ?????????????? Baseband channel ????????????? waveform ????? pulses ????????

????????????????? pulse modulator ????? pulse waveform ????????????????? ?????????????????????? baseband channel ???????? ????????????????? ???????????? baseband channel ??????????????? receiver ????????????? pulse waveform ??? demodulate ??????????????? ???????? ???? pulse waveform ??? ?????????????? ????????????????? ?????? ??????? ????????( detect) ?????? ???????????? formatting ??? ??????????? ????????????????? ?????? imformation signal ????????????????????

Formatting texual Data (character coding)

????????????? ?????????? ??????? ???????????????????? ?????????? ??????????????????? texual ????? ????????????? ?????????????? ???????????? ????????? ?????????? ????????????????????? texual data ?????????? a,b,c? ???????????? ????????? ???????????? hi, do, you, love, me ?????????? ???? ??????????? ????????? standard format ?????????? ???????????????????? encode ?????????? standard format ???????? ASCII,EBCDIC,Baudot ?????????????? character coding ?????????????? ???????????? ASCII format ??????????????????????????

????????? texual imformation ??? ?????? formatting ???????????????? ?????????????????? ????????????

?????????? ?????????? ??????? ??????? (?)

???????? ????????????? ???????????? ????????? ?????????? Digital communication ?????????? ?????????????? ??? ??????????? ???????? ???????? ??????? ????????? ?????????????? ?????? ?????? ???????????? ??????? ?????????????? Analog - ?????????????????? ?????????? ????????????????? ??????????? ???????? ???????????????? ????????????? ???????? ???????? ??????????????????? ??????? ?????????????????? ???????????????? ???? ??????? ?????????????????? ???????? ?????????? ??????????? ??????????????? ???????? ????????????(distortion) ? ?????????? ?????? ???????? ??????????????? (interference) ?????? ???????????? ??????????????? ?????????? ??????????? ?????????? ?????????????? ????????? ???????????????? ????? ?????????????? ???????????????????? ?????????????????????? ???????? ?????? ?????????? ????????????????????????? ??????????? ???????????????

DCS ??? ????????? ????????? ????? ????????? (imformation) ??? ?????????????????? (bits) ????????????????????????? process ??? formatting ????????????????? process ????????? bits ?????? ????????????????? digital messages (????) message symbols ????????? ????????????? ????? ?????? message symbol m_i(i=1..M)?????????? M member ?????????????? ??????? alphabet ??????????? ??????????? ??????????????????[????? m-i ???????????????????????? ?????????????????????????????????????????????? ?????????????? ??????????????? ???????????????????????????] ???????????? M ? ? ???????????????? message symbol ?? ???????????????? (????????????? ???? message symbol ??? bit ??????????????????????????? ???????? M ?? ? ???????????????????? symbol ????? bit ???????? ? ??????? ????????????????????? channel code (error correction code) ?????????????? ????????????????? ?????? ????? message symbols ?????? sequence ??? channel symbols ?????? sequence ????? ?????????????? ???????????? ???????????????? ????????? bits ?????????? ???????????? ?????????? transmission channel ????????????????????? ??????????? transmission channel ???????????????? modulation ??????????? pulse modulation ????? ??????????????? ( voltage level 0 or 1) ??? ???????? ??????? baseband waveform ???????????????????????? baseband waveform ????? spectrum ??????? frequency 0 Hz ????????? ???????????MHz ????????? signal ??????????????????? RF transmision ?????????????? ?????????????? bandpass modulation ?????????????? transmission medium (channel,etc) ? pulse-like waveform??? ???????????????? ?????????????????????????? bandpass modulation ??????????? ?????????????medium( channel ) ?? bandpass waveform ????????????????? bandpass ??? frequency spectrum ?? baseband frequency spectrum ????????????? source coding ????? ???????????? ?????????? (A/D) ??? ?????????????????? ?????????? ????????????????? ??? ??????????????? Encrypt ????? ????????????????? ??????????????? ???????????????? ???????? ???????????????????? ?????????????????? ????????? ?????????????????? channel coding ?????????????? ???? rate ????????? ?????????????????? ????? (probability of error) ??? ?????????????? multiplexing ??? multiple-access ????? ???????? source ?????? ?????????????????? signals ?????? ??????????????? ???????????? ?? communications resource (spectrum,time ) ??? ?????????????? ???????????????????? frequency spread ????? ???? ???????????????? ??????? ??????????????????? ????????????? signal ??? ???????????? ?????????? ??????? ??????????? ??????????????? ?????????????? source coding , encrypt, channel coding, multiplexing and multiple-access ???????? ?????????????????????????? ??????????
Reciver ?????????????? transmitter ?????????? ?????????????????? bandpass waveform ??? demodulator ??? baseband waveform ?????????????????????????detection ????? ?????? baseband waveform ??? binary bit ?????? ??????? ????????????? ?????????????????????????????????????? DCS ????????????????????????????????? DCS ??????????????? ?????? ?????????? ?????????????? ????????????????????????

Gtalk ??? ?????????? ???????????!!!

????????????????? ???????? update ????????????????

Voip ?????????? service ??? ???????? ??????? ???????? ????????? ??????????????? ??????????????? ?????????? ?????????????????????? ???????? ??????????????? ??????? ?? ??? gtalk ??? ????? ????????????? ??????????????? ?????????????? ??????????????? ???????

??????????? ???? ??????? ?? ??? ??????????????

Country name - Country code - Dialing code

Argentina AR +54

Australia AU +61

Austria AT +43

Belgium BE +32

Canada CA +1

Chile CL +56

China CN +86

Czech Republic CZ +420

Denmark DK +45

El Salvador SV +503

Finland FI +358

France FR +33

Germany DE +49

Hong Kong HK +852

Hungary HU +36

Ireland IE +353

Israel IL +972

Italy IT +39

Latvia LV +371

Lithuania LT +370

Luxembourg LU +352

Mexico MX +52

Netherlands NL +31

Norway NO +47

Peru PE +51

Poland PL +48

Romania RO +40

Slovakia SK +421

Slovenia SI +386

Spain ES +34

Sweden SE +46

Switzerland CH +41

United Kingdom GB +44

United States US +1

??????? ?????? ??? ??????? ??????? ????????????????????????? ????? ?????????????????????????

?????????????? ???????? ???????????? ????????????????

1. Google Talk ???????????


2. ??????????????? ?????????????? ??????? gtalk address ?????? Add ?????? add ???????


3. ???????????????????? ???????????? ????????????? ???????????????? gmail.com ??????? talkster.gtalk2voip.com ??? ?????????????????????? (phonenumber@talkster.gtalk2voip.com) ????: for UK, use 442071234567@talkster.gtalk2voip.com or for USA , use 12125551212@talkster.gtalk2voip.com


4. 
   
   
   Talkster ?? ?????????? confirmation ??? instructions ?????? ??? ???????????????? ?????? ??????????????????????????? local Talkster number ???????? ????????? ?????????? ????????? ????????????? ??????????????????? ?????????? ????????? ????????? ????????????????????????? ??????????????? ???? ??????? ?????? ????????????????? ??????? ?????????????? ???????????????? ?????? ????????????? Call back system ??????????????? ???????? ?????? ????? ????????????? ??????????? ???? ??????????????? ????????????????? ??????????? ??? ???? ????????? ???????????????????? ?????????? ???????? ??????????? ????????????? ??????? ???????????? ??????????????? ???????? ??????? ???? ??????????? ?????????
   
   


5. ???????? mobile phone ????????????????????????, ????????? SMS ???????? ???????????????????????? Talkster call-in number ????????????????????????? ?????????????? Talkster number ??? IM ????????? email ?????????????????????

Make calls from your Google Talk

1. Google Talk Contact List ? ??????????????? ????????? select ??????


2. Call button ??? Click ???????? ?????????????


3. Talkster ? ???????????????? ????????? gtalk ?????? ?????????????????????


4. ???????? ??????? ?????????????????????? ?????????????? ????????? ???????? ?????????? 10 seconds ???????????????????? ?????? ??????????? ????????? ??????? Talkster local phone number ??? ????????????????


5. ?????????????? ?????????????? (???????? ?????????????? ????????????? ??????????????? ?????????????? ????????????????)


6. ???????????? ???????????? ?????????? ???????????? ??????????????? ??????????????


7. ??????????? ??????????????????????


8. ????????? ???? Talkster call-in number ?????? ???????????? ????????? ??? ???? Google Talk ??? ??????????????????????? ???? ????????? ???????? ??????????????????

no catches, no limits, and no conditions! ???? ??????? ???????????????????????

Helpful Hints

?? service ?????? ???????? ???????? Caller ID ??????????????????????????? ????????????? ?????????? ???? service ?? ??????????????? ?????????????? ?????????????

login ??? password ?????????? ????????? ??????????????? ???????????????????????? ???????????????????????????????

???????? ??????????????? www.talkster.com ??? ????????? ??????????????? ????????

?????????? ?????????? ????????????????????????? ????????

??????????

http://engineer4myanmar.com

1-7-08 15:45

PDF ??? ????????? ??? ?????

????????? ???????? ?????????? ?????? ??????? ?????????? ??????? ???????? ???????????? ?????????????????? ?????????????????????? ????????????????????? ??????????????????? ???????? ???????????? ?????????????????????? ??????????????????? ???????????????????? ????????? ???????????????????? ??????????????????? ?????? ????????? ??????????????? :P



???????? update? ?????????????????? ??????? ??????? ??????? ???????????????? ??????????? ???????? ???????? ???????? ???? ?????????? ?????????? ?????? ???????? ??????? ???????????? ????????? ??????????????????????