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Command
\N
\N1
\N2
\N3
6.14.2 S
P
(DTE)
ERIAL
ORT
The AT\J command allows DCE and DTE to operate at different speeds. The AT\J1 command forces
serial-port (DTE) speed to follow data link speed in any mode.
If the modem is in direct mode (\J1) and a DCE link is established at a speed other than that of the
original DTE autobaud speed, the modem will issue the CONNECT message for the new DTE speed at
the original rate. All subsequent data will be sent to the DTE at the new DCE speed.
Command
\J
\J1
†default
6.14.3 D
-L
F
ATA
INK
LOW
Enables or disables flow control used to pace data sent from the remote modem to the local modem
during a normal connection. When AT\G1 is set, the modem uses XON/XOFF to start/stop data
transmission from the remote modem. This command is ignored during a reliable connection.
Command
\G
\G1
†default
Table 6-46. Operating Mode (\N).
Operation
Normal mode (no error control): data is buffered
Direct mode (no error control): data is not buffered
Reliable mode (MNP only)
Auto-reliable mode (try MNP then fall back to normal async)
A
(\J)
BPS
DJUST
Table 6-47. Serial Port (DTE) bps Adjust (\J).
Operation
Disable slaved DTE/DCE (constant speed DTE on)†
Enable slaved DTE/DCE (constant speed DTE off)
C
(\G)
ONTROL
Table 6-48. Data Link Flow Control (\G).
Operation
Disable modem-port flow control†
Enable modem-port XON/XOFF flow control
CHAPTER 6: Asynchronous Operating Commands
8 7
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