Modem Command Reference

Returns the high-order byte of the calculated Eye Quality Monitor (EQM) value. The value for a normal connection ranges from about 0 to 2 and approaches 8 for a progressively poorer connection.

-Kn — MNP Extended Services

Parameters

0, 1 or 2

Default1

Enables the modem to investigate the capabilities of the modem's MNP10 capacity, and determine whether a V.42 LAPM connection will be converted to an MNP connection. When -K1 is set on both modems, a LAPM connection will be converted to an MNP10 connection.

Examples

AT-K0

Disable V.42 LAPM to MNP 10 conversion

AT-K1

Enable V.42

LAPM to MNP 10 conversion

AT-K2

Enable V.42

LAPM to MNP 10 conversion; inhibit

 

MNP extended services initiation during V.42 LAPM

 

detection phase

*Hn — Link Negotiation Speed

Parameters

0, 1 or 2

 

Default

0

 

Sets the connection speed for link negotiation before upshift occurs between modems. When poor telephone lines are anticipated, the *H1 command should be used to set the connection speed to 1200 bps to facilitate link negotiation. If this command is set to a 1 and the modem connects in LAPM, the connection speed will be fixed at 1200 bps.

Examples

AT*H0

Link negotiation occurs at the preferred line speed

AT*H1

Link negotiation occurs at 1200 bps

AT*H2

Link negotiation occurs at 4800 bps

)Mn — T ransmit Level Adjustment for Cellular Connection

Parameters

0 or 1

Default0

User’s Guide and Reference

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Ositech comm Trumpcard Data/Fax Modem manual Kn MNP Extended Services, Hn Link Negotiation Speed