User guide

6-102 AR100 Series Internet Router User Guide
Data compression
The default Stac LZS compression improves the performance of connections up
to 64K.
5. If necessary, modify the Compression setting.
Maximum connection speed
Depending on the ISDN services available in your location, your ISDN service
provider may offer you choices about the maximum speed of your inter-office
connection. If so, the router configuration needs to include your maximum
connection speed. If you are unsure, contact your ISDN service provider.
6. If necessary, modify the Maximum connection speed.
ISDN Dial-on-Demand automatic disconnection
If you are using ISDN Dial-on-Demand, your interoffice connection will by
default automatically be disconnected if it is unused for more than 60 seconds,
to save call charges. It will automatically be reconnected when there is new
data to send. You can change the value of the Idle timer, or select Off to keep
the ISDN call connected permanently.
7. If necessary, modify the Idle timer.
Callback
The AR100 supports ISDN callback, which verifies the caller using CLI,
disconnects the incoming call, then calls the destination back to establish the
link. This allows your office to reverse the call charges to a central office, for
central billing of ISDN calls. If you are unsure about whether this feature is also
supported by your remote office, contact your network administrator at the
remote office.
8. Choose whether or not to enable callback.
ISDN Leased line and ISDN Dial-on-Demand
If you are using an ISDN Leased Line for your inter-office connection on one
ISDN channel
and
ISDN Dial-on-Demand on your other ISDN channel,
and
your inter-office connection has a maximum speed of 128K or 112K, then you
can control when extra Dial-on-Demand ISDN calls are connected. You can
choose whether or not to use your Dial-on-Demand channel to increase your
inter-office connection speed when the demand is high. If you choose to, then
the router will automatically make a Dial-on-Demand call when the demand
rises above a threshold level for a specified time. It will automatically
disconnect such a Dial-on-Demand call when the demand falls below a lower
threshold value for a specified time. You can use the default threshold and time
values or change these values to tune your network. You will also need to enter
the ISDN number for the second call to connect to your remote office.
Note: To determine whether data or voice Dial-on-Demand calls will be dropped for
higher priority calls for an AR140 with phone ports, see Call bumping on the “Phone
and ISDN Information page” on page 96.