- Ositech Communications Inc. User's Guide Trumpcard Data/Fax Modem

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