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APPENDIX: ISDN AT COMMAND
Command
Description
ATA
Go off-hook (answer the incoming call immediately)
ATB?
Display V.110 user rate for out-going calls
ATBn n=0
V.110 user rate: 600 bps
n=1
V.110 user rate: 1200 bps
n=2
V.110 user rate: 2400 bps
n=3
V.110 user rate: 4800 bps
n=4
V.110 user rate: 9600 bps
n=5
V.110 user rate: 19200 bps
n=6
V.110 user rate: 38400 bps
n=7
V.110 user rate: 48000 bps
n=8
V.110 user rate: 57600 bps (for Japan only)
Note : The V.110 rate is depend on the DTE speed . When HyperTerminal
open , if DTE speed is 600 , 1200 , 2400 , 4800 ,9600
,19200 ,38400 ,48000, and 57600 . Key in "ATB?" will
display the matchV.110 rate, If DTE speed is not in one of
the V.110 legal rate , then the "ATB?" will be set to default
speed 38400 .
ATD<number>
Make ISDN data calls, e.g. ATD5551000
ATDM<number>
Make modem calls over ISDN line, e.g. ATDM5551000
ATDT<number>
Dial out the ISDN phone number, e.g. ATDT5551000
ATDV<number>
Make ISDN Phone voice calls, e.g. ATDV5551000
ATDSn
Dial out the pre-stored phone number (n=0, 1, 2,.). Refer
to AT&Zn=<number> command for phone number
storage
ATDL
Re-dial the last ISDN phone number
ATEn n=0
Echo in command mode is disabled
n=1
Echo in command mode is enabled