Comrex ACCESS 2USB, Руководство по эксплуатации продукта

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RATE VS. RETRAIN
When incoming or outgoing POTS calls are active, the Remotes tab changes slightly. You will see two additional
buttons appear on the tab, labelled Retrain a nd Rate Drop . These are special functions applicable only to POTS
calls, so they are not visible during IP connections.
These controls are similar in function to those provided on POTS codecs. ACCESS will initially connect at the best
data rate supported by the telephone line, and will display that connect rate on the
Remotes tab next to the
current state value. This value may be viewed by pressing the + next to the active connection. You can force the
system to drop to the next lowest connect rate by clicking the
Rate Drop button at any time. Audio transfer will
be interrupted momentarily while the units negotiate the new connect rate. Alternately, you can force the system
to initiate the entire training sequence again (the “chat” sounds heard at the beginning of a call) by clicking the
Retrain button. You will lose audio for a longer time (approx. 7 seconds) but the modems will completely
re-equalize the connection and audio will begin again once the retraining is finished.
Once ACCESS has dropped to a lower rate, either by a rate drop or retrain command from either end, there is no
way to force it to connect at a higher rate. If you want ACCESS to try again for a higher connect rate, you will need
to disconnect the call and dial again.