leased line + routing

[Andreadakis Manolis]

Nik. Kokras wrote:

> Xm, sygxrones portes. Merika baseband modem, apo oso eida mexri stigmhs exoun RJ-45
> "exodo" (koitousa thn seira ASM ths RAD).Den mporw na kanw to e3hs:
> (modem) --- (limux,eth0) --- (routing mesa sto linuxaki mou+fw+proxy+klp) ---
> (linux,eth1) --- (LAN) ?
> Gia na glitwsw to router dhladh, mpas kai perissepsoun xrhmata gia kalytera modem

To RJ-45 pou exoun ta \ASM ths RAD einai gia na syndeseis tin analogiki grammi sou kai

oxi ton ypologisti sou. Sto interface me ton ypologisti eisai periorismenos me ta
V.24/RS-232 kai
X.21 (syxrono)

mporeis na kaneis to eksis
(modem) - (karta me syxrono interface)- (linux) - .....
i
(modem me interface rs-232) - (linux) .....

Ta ASM kai sygkekrimena to ASM-24 (baseband) bgainoun kai me RS-232 alla profanws me
auto to interface den mporeis na piaseis megales taxitites (gyrw sta 64 kbps pisteyw)

Apo tin alli yparxoyn kartes gia pc pou prosferoun X.21 interface gia na syndeseis
tetoia
modems. I digiboard exei mia karta SYNC/570i me 2 X.21 ports alla bgainei
almiroutsiki (900$) syn to oti den kserw kapoion pou na to exei idi dikimasei, opote
isws
symferei i lisi enos "ftinou" router, px CISCO 1005.

Ta parapanw einai apotelesma ligou psaksimatos sto internet kai oxi anagkastika
akribi. An kaneis exei paratiriseis i perisoteres plirofories gia tis sygrones kartes,
euprosdektes.


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