Filter
Top Products
Appendix D - AT Command Summary
RF300E/RF310E 137
D.1.6 Digital (Data) Call Commands
Use these commands to make or configure digital (data) calls.
Command: A
Function: Answer Digital Call
Unit: n/a
Values: n/a
Default: n/a
Description: The A command forces the TA to answer an incoming digital call. To cause the TA to
auto-answer, set register S0 to a value higher than 0.
Command: Dn
Function: Dial Digital Number
Unit: ASCII
Values: n=dial string containing 0-9, “*”, “#”, “&”, “+”, “!”, “-”, “(“, “)”, or “,”
Default: No dial string
Description: The D command causes the TA to dial a digital telephone number (e.g., ATD785-
3500<CR>). The dial string can contain up to 80 characters.
Command: DSn
Function: Dial Stored Number
Unit: Decimal ASCII code
Values: n=0-9
Default: DS0 (Dial stored number 0)
Description: To dial a stored telephone number, type DSn in terminal mode, where n is the
location of the number you wish to dial. For example, ATDS3<CR> dials a telephone
stored in memory register 3 location. Stored numbers can be reviewed by giving the
command ATL<CR>. Numbers can be stored by the use of the &Zn=x command.
Command: Hn
Function: Hang Up Digital Call
Values: n=0—Go on-hook (hang up)
n=1—Go off-hook
Default: H0
Description: The H command forces the TA to go off-hook (to take control of the telephone line) or
to go on-hook (hang up). Since the TA goes off-hook automatically when it dials, the
Hn command is normally used only to hang up. To hang up, you must first escape to
command mode (+++AT<CR>), then type ATH<CR> or ATH0<CR>. You can also
include the hang up command in the escape sequence: +++ATH<CR>.
Command: !Hn
Function: Digital Call Hold-Off Time Unit: 1 second
Values: n=0 (disable),
n=1-255 (1-255 seconds)
Default: !H0 (disabled)
Description: When a digital call disconnects a timer will be installed that will hold off incoming
digital calls for the given amount of time (n) for that digital port. Digital calls that are
received by that port while calls are being held off will not be rejected nor will RING
messages be given. Rather the digital call will be held in an alerting state until !Hn
times out at which point the call will begin the normal ringing process. Digital calls
originated from that port while the !Hn timer is running will abort the timer and the call
will go out immediately. This command can be very useful for certain RAS
environments that require at least 1 second to initialize a port after a call has
disconnected (such as Citrix and Novell). See the troubleshooting section below for
more information about the use of this feature.