Farallon Communications 612 Benutzerhandbuch

 

ISDN uses digital technology to connect to the public telephone 
network. Using the existing copper wire and public telephone 
network infrastructure, ISDN provides for existing voice ser vices 
and high-speed, dial-up data ser vice.

Networks using ISDN communicate more efficiently than those 
using analog lines. This is due to the relatively low cost of ISDN, the 
fact that digital lines are relatively free of the random noise 
associated with analog lines, and the high communication speeds 
that can be achieved. ISDN Basic Rate Inter face (BRI) lines can 
reach speeds of up to 128 thousand bits per second (Kbps). A 
typical high-speed modem can only send data over an analog line at 
up to 28.8 Kbps.

You can conver t almost any existing regular telephone line to ISDN 
by ordering ISDN ser vice for that line. In most cases, no rewiring is 
necessar y for the conversion and no special equipment is needed 
to use the conver ted line with your Netopia ISDN Modem. (Keep in 
mind that if you conver t an analog line to an ISDN line, you will not 
be able to directly connect analog devices to the ISDN line in most 
cases.) 

 

If you’ve been using an ordinar y modem to dial into analog data 
ser vices, such as a corporate LAN or online ser vice, you can 
continue to do so with your digital ISDN line. Simply connect your 
analog modem to one of the analog device por ts on the Netopia 
ISDN Modem and continue to use your analog devices in the same 
fashion as before. 

The Netopia ISDN Modem will conver t the analog signal to a digital 
signal for transmission over the ISDN line in such a way that it can 
be retransmitted by the public switched network to an analog 
device.