Operation Manual

Channel Bundling
NetWAYS/ISDN – 3 Remote Access with NetWAYS/ISDN 21
Channel Bundling
In addition to compression, NetWAYS/ISDN can also opti-
mize throughput by using both ISDN B channels for the data
connection. Channel bundling attains a bandwidth of
128 kbit/s (2 x 64 kbit/s). The following channel bundling
options can be configured:
Please note that using both B channels doubles the connec-
tion costs. You should therefore consider carefully whether
the data to be transferred justifies the use of channel bun-
dling.
3.2 Cost Management
ISDN connections, unlike local network media, cost money
to use. ISDN operators charge by the duration of the dial-up
connection, not by the volume of data transferred.
NetWAYS/ISDN uses a number of intelligent techniques to
reduce ISDN connection costs.
Physical Inactivity Timeout
To reduce connection charges, the inactivity timeout (Short-
Hold Mode) clears down an ISDN connection automatically if
no data has been transferred for a certain period of time.
When data needs to be transferred again, NetWAYS/ISDN
Channel bundling
setting
Description
None The connection is set up using only one
Bchannel.
Static The connection always uses two B channels.
Dynamic The second B channel is automatically added
as required for the data traffic load. When the
data traffic load decreases, the second
B channel is automatically cleared down.
Manual The second B channel can be added to the
existing connection as needed by clicking a
button.
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