Verilink Productivity 500 (34-00236) Product Manual - Manual (Page 52)

Page 52 500 TA Option Configuration
DTR is off. This option is valid for both asynchronous and synchronous
modes.
DTR Dial - Use the &D9 command to enable DTR dialing of the stored dial
string for the asynchronous mode.
Persistent DTR Dialing &L
This command controls the Persistent DTR Dialing (PDD) Feature which pro-
vides the capability for a given port to automatically re-dial the configured
stored phone number 0 continuously whenever the port does not have an active
call, and the DTR pin is on.
Data Set Ready &S
This command selects the function of the DSR output (pin 6). DSR normal
means DSR is off until the 500 TA begins the connect sequence, then remains
on as long as the 500 TA is online.
Request to Send / Clear to Send &R
This command controls the CTS output (pin 5) when the 500 TA is in synchro-
nous mode. In asynchronous mode, CTS is always on unless the CTS flow con-
trol option is enabled.
Command Operation
&D Ignore DTR (default)
&D1 On-to-off DTR transition recalls the command mode
&D2 On-to-off DTR transition causes the 500 TA data port to
disconnect and disables auto answer while DTR is off
&D3 On-to-off DTR transition resets the data port and disables
Auto Answer
&D9 Enable DTR dial for asynchronous mode
Command Operation
&L0 Disable Persistent DTR Dialing (default)
&L1 Enable Persistent DTR Dialing
Command Operation
&S DSR always on (default)
&S1 DSR on after protocol is connected