Motorola and V.32bis - Manual (Page 107)

Using the AT Automatic Calling Interface 5-15
Using the
AT
A
C
U
S-Register 25—Delay Before Looking for DTR
When DTR Delay=S25 (AT * DT), and AT Form=Sync Data (AT&M) or V25
Form=AsynSync, the modem goes into synchronous data mode after the modem
dials asynchronously. S-Register 25 lets you switch from an asynchronous DTE to a
synchronous DTE without hanging up. S-Register 25 allows this switch by
specifying how many seconds the modem waits after connecting before looking for
DTR.
S-Register 26—RTS/CTS Delay
This S-Register selects the delay between CTS and RTS while the modem is online.
It operates in modes specified by the RTS (AT
* RS) and CTS (AT * CT) commands.
The time is selectable in 1/100 second intervals, from 0 to 2.55 seconds.
S-Register 30—DTE Inactivity Disconnect
If DTE Inactivity=S30 (AT * SI), the modem disconnects when data is not sent or
received for an amount of time greater than the value stored in S-Register 30,
multiplied by 10 seconds. Time-outs range from 10 to 2550 seconds (42.5 minutes).
A value of 0 stored in S-Register 30 disables the DTE inactivity option.
Stored in Nonvolatile Memory?: Yes
Status-Only?: No
Default: 5
Range: 0 to 255 (seconds)
Stored in Nonvolatile Memory?: Yes
Status-Only?: No
Default: 1
Range: 0 to 255
Stored in Nonvolatile Memory?: Yes
Status-Only?: No
Default: 0
Range: 0 to 255 (x 10 seconds)