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AT Command Set and S-Registers
14-173810-A2-GB30-30 September 1998
Table 14-2
(3 of 12)
3800 Series S-Registers
S-Register Front Panel BranchDescription
S18 Test Timeout
Register sets the duration (in seconds) for the modem tests. This
automatically cancels any test in progress after the time of this register
expires. Any test can be manually canceled by issuing the escape
sequence (+++) followed by the &T0 command.
Enter a value from 0 to 255 seconds. (A value of 0 disables this register.)
Factory setting is Disable (0).
Configure\Edit\Tests
S26 RTS-to-CTS Delay
Register sets the length of time (in 10-millisecond increments) the
modem waits after receiving RTS before issuing CTS to the DTE.
Enter a value from 0 to 255.
Factory setting is 0 milliseconds.
Configure\Edit\DTE
Interface
S34 1800 Hz Training Tone
This configuration option is for communication with certain modems that
do not comply with the V.32 standard. When 1800 Hz Training Tone is
enabled, a short burst of 1800 Hz (AC) tone is sent to the answering
modem to prompt it to answer. This is not required for V.32-compliant
modems.
Register has the following values:
0 = Disable
1 = Enable
Factory setting is Disable.
Configure\Edit\Leased Line
S35 Auto Redial (Leased Line)
Auto Redial allows repeated automatic dial backup attempts by
specifying the range of Directory Locations that can be tried. A redial
attempt is made in response to a bad phone number, a busy signal, no
answer, or no quiet answer. The modem must be in Originate mode.
On leased lines with dial backup, Auto Redial works in conjunction with
the Bad Lines Auto Originate and Rate Auto Originate options.
Register has the following values:
S35 = 0 Use Directory Location 1
S35 = 1 Use Directory Locations 1–2
S35 = 2 Use Directory Locations 1–3
S35 = 3 Use Directory Locations 1–4
S S S
S S S
S35 = 9 Use Directory Locations 1–10
NOTE: The modem must be in Originate mode to perform an automatic
dial backup.
Configure\Edit\Leased Line
(Auto Redial)