To operate properly peer-to-peer, the modems settings
should match each other! Do not forget to configure the
remote modem beforehand!
2.4.2 Rate selection guidelines
Before setting the data rate you should have known the performance of the
line the modems are intended for. If the line performance is unavailable,
apply the following technique to select the proper data rate:
•
Measure resistance of the line. To do this, make short-circuit on either
line side and attach an ohmmeter to another one. Then determine a
maximum rate providing reliable communication by table 2.
•
Switch carefully the dial to the required position with a screwdriver.
Reboot both modems to activate the new settings. If the remote rate
setting is used (SET2 is ON), change the “master” modem rate only.
Link activation takes up to 2 or 3 minutes to succeed.
•
If the link is not activated (the DSL LINK LED is not getting light)
during the mentioned time, set a smaller value on the rate dial and do
the next attempt to activate the link.
•
If you can't get the link activated, consider to use console
management mode (Chapter 3). In this mode you can try to succeed
by varying the line coding (Chart 1) as well.
2.5 Configuring FXO/FXS interfaces
For the switches setup mode, (SET4 is OFF), the FXS and FXO interfaces
are always configured as follows:
•
Both channels are ON
•
The voice codec type is set by SET3 switch (ON=ADPCM32, OFF=
PCM64)
•
Dynamic bandwidth allocation is turned on
•
Adaptive echo cancellation is turned off
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