Ositech comm Trumpcard Data/Fax Modem 사용자 설명서

User’s Guide and Reference

4 - 7

Basic Modem Operation

62

CONNECT  24000

connection at 24000 bps  *

63

CONNECT  26400

connection at 26400 bps  *

64

CONNECT  28800

connection at 28800 bps  *

66

COMPRESSION  CLASS 5 MNP  data  compression

67

COMPRESSION  V.42BIS

V.42bis  data  compression

69

COMPRESSION  NONE

no  compression

76

PROTOCOL  NONE

connection with Modem that does
not support MNP or V.42

77

PROTOCOL:  LAP-M

connection with Modem that
supports V.42

80

PROTOCOL:  ALT

connection with Modem that
supports MNP

81

PROTOCOL:  ALT - CELLULAR

connection with Modem that

supports MNP-10

*Only applicable to Trumpcard 28800 version

To end your connection, log off the remote system (if applicable), enter the
escape sequence (+++), and issue the ATH command.

You may want to wait 30 seconds or so after your last transmission before
disconnecting to ensure any data in the Modem buffer has cleared.

The Trumpcard Modem supports the  V.42 and MNP error correction
protocol as its default mode. When you initiate a connection from your
Trumpcard 

 Modem to a remote Modem not supporting error correction,

the remote system may respond with garbled characters or even lock up.

If the remote Modem does not support error correction, the Trumpcard
continues the connection without error correction or data compression.
However, as mentioned, the remote system may have already locked up.
In these cases, you must break the connection, turn off error correction on
the Trumpcard, and place your call again.

To turn off error correction for the Trumpcard,

 use the AT&Q6 command. If

you wish to make this (non-error correcting) the default setting, follow the
AT&Q6 command with the AT&W command.