Setarisma modem

[Michalas Othon]

Ta modem einai ane3arthtes mhxanes kai mono san
tetoies mporeis na tis katalabeis (kati san ena 
komputer enos programmatos).
Oi mhxanes autes exoun duo pules  eisodou-e3odou kai
mia proka8orismenh roh programmatos.
Ta shmerina modem dexontai parametropoihsh tou
programmatos tous. Mporeis na oriseis apo thn
taxuthta ths ka8e pulhs (pros ton H/Y 'h to allo modem)
mexri leptomereies tou ti na kanoun otan sugkekrimena
shmata lambanontai sthn pulh pros ton H/Y.
Autes oi entoles mporoun sta sugxrona modem na 
apo8hkeuontai wste na mhn einai anagkh na epanalambanontai
ka8e fora pou to modem kanei reset ( sta newtera malista
mporeis na exeis 2,3 'h kai parapanw omades-set tetoiwn
entolwn kai na energopoieis thn epi8umhth omada)

H parametropoihsh twn modem ginetai me thn boh8eia
enos H/Y ('h sta pio akriba mesw upotupodous plhktrologiou
blepe Nokia, Motorola 'h akomh kai mesw termatikou sundemenou
se porta RJ45 blepe Patton)
*** Autos einai o skopos ths portas pou rwtage kapoios filos
***kai oxi gia sundesh sto Ethernet . H porta einai seiriakh RS232.

Sto Linux mporoume na parametropoihsoume eukola ena modem
(na orisoume dhladh tis arxikes parametrous) me ton e3hs tropo:

Dinoume : dip -t
Orizoume thn seiriakh 8ura : port /dev/cua0 ('h 1)
Orizoume thn taxuthta : speed 38400
Dinoume : term

Twra pleon eimaste se katastash elegxou tou modem.
Oi entoles pros to modem dinontai me to arxiko AT
apo thn le3h Attention.
Sto modem mikra 'h kefalaia einai to idio pragma.
Dinontas loipon AT kai enter 8a deis thn apanthsh
tou modem OK (ektos kai an to modem einai 
parametropoihmeno etsi wste 'h na mhn dinei
apanthsh 'h na dinei ari8mitikh apanthsh)

Xrhsimes entoles:
AT&F 'h AT&F<noumero 1'h 2> 
epanaferei tis ergostasiakes ru8miseis pou einai kata
kanones oi xrhsimoteres gia tis basikes efarmoges twn modem.

AT&W 'h  AT&W<noumero 0> apo8hkeuei tis trexouses
parametrous wste na diabastoun otan to modem
sbhsei kai anayei.

kai (auto rwtage kapoios filos pou eixe problhma me to TR)
h entolh AT&D<noumero> auto e3hgei sto modem pws na antidra 
ka8e fora pou o H/Y pairnei 'h afhnei ton elegxo ths seiriakhs
Sta perissotera modem bazoume AT&D2 auto exei san sunepeia
1.) To modem einai nekro an den uparxei programma (p.x. pppd) to
opoio na elegxei thn seiriakh.
2.) To modem anabei to TR otan anebei tetoio programma
3.) To modem kleinei thn epikoinwnia otan payei na leitourgei
to programma (kai sbhnei to TR)

Leptomereies gia to pws suntasontai oii diafores entoles
8a breite sta biblia pou sunodeuoun ta modem.

Twra otan leme drivers enooume ena arxeio
sto opoio perigrafontai oi diafores entoles pou katalabainei
to sugkekrimeno modem.  (Sta windows bebaia autoi oi
drivers mporei na sundeontai kai se e3wterika programmatakia
pou kanoun diafora alla pragmata me to modemaki mas.)

Elpizw na boh8hsa.

Othon Michalas








On Tue, 02 Jun 1998 11:57:53 +0300
newbie at ceid.upatras.gr wrote:

newbie> Mipws mporei na me boithisei kapoios exigontas mou
newbie> otan leme "setarisma" toy modem ti ennooume?
newbie> Apla na dilwsoume se poio port einai kai poio IRQ exei?
newbie> H xreiazetai kapoio stisimo driver?
newbie> Exw Red Hat 5.0
newbie> 
newbie> Euxaristw

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