Jaton Communicator V.90 - Manual (Page 37)

37
Communication software manual and AT Command to modify INIT
strings.
XMODEM, YMODEM, ZMODEM
These are file transfer protocols used by the host ( i.e. communication
program in the PC). It does error checking and assures data integrity of the
file transfer. There are some other protocols. ZMODEM is the most
preferred protocol to use.
DATA RATE
The modem recognizes AT commands from the DTE, at any valid data rate
from 300 bps to 115,200 bps. However, the DTE should use the data rate
specified for each mode:
Mode Data Rate
(bps)
Affected Data
Data 300-33,600 Modem-to-modem data rates
(V.34) 300-115,200 DTE-to-modem data rates
Data(Tran
smit)
4800-31,200 Modem-to-modem data rates
Data(
Receive)
33,333-57,333 ISP-to modem data rates
Data(
Receive)
300-115,200 DTE-to-modem data rates
Fax 19,200 AT commends and fax data transfers
Voice 19,200-
115,200
AT commands, playback and record modes
(Varies according to compression type)
MNP
Microcom Network Protocol is a data communication protocol that allows
error-free interactive communications with a variety of computers or
terminals over ordinary voice-grade telephone lines.
LAPM
Link Access Procedure for Modems. An HDLC error correction protocol is
for use with error-correcting modems. Part of the CCITT V.42 protocol.