Automatic Rate Re-negotiation
Retrains and rate re-negotiations initiated by the modem are called
automatic retrains or rate re-negotiations, respectively. Automatic rate
re-negotiation is always disabled when the modem is not allowed to change
its line speed (conditions listed above) or the value of S110 is not 2.
When the modem recognizes falling signal quality, the modem may (if enabled
by the &B1 command or by the value of S110) initiate a retrain or rate re-negotiation.
The recommended procedure is to try a retrain first. If that does not produce
acceptable signal quality or FER, try to renegotiate a lower speed.
AutoSync Considerations
Error Correction Considerations
Non-Error Control Mode
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