coba lebih diperjelas konfigurasi hubungannya!.
misal:

ISP                                            Pelanggan
-----------------------                       ------------------------
Cisco-(syc/async)-modem-------leased-line------modem-(sync/async)-linux

kalo linux rasanya nggak banyak support synchronous serial card..

salam

-- 
Yudhi Kusnanto ([EMAIL PROTECTED])
STMIK Akakom Yogyakarta


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