Kn — mnp extended services, Hn — link negotiation speed, Examples – Ositech comm Trumpcard Data/Fax Modem User Manual

Page 63

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User’s Guide and Reference

4 - 31

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

Default

1

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 — Transmit Level Adjustment for Cellular
Connection

Parameters

0 or 1

Default

0

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