Specifications

Si2404
Rev. 0.91 35
24 Sleep Inactivity Time—Sets the time that the modem
operates in normal power mode with no activity on the
serial port, parallel port, or telephone line before enter-
ing low-power sleep mode. This feature is disabled if
the timer is set to 0.
0 0–255 seconds
30 Disconnect Activity Timer—Sets the length of time that
the modem stays online before disconnecting with no
activity on the serial port, parallel port, or telephone
line (Ring, hookswitch flash, or caller ID). This feature
is disabled if set to 0.
0 0–255 minutes
38 Hang Up Delay Time—Maximum delay between
receipt of ATH0 command and hang up. If time out
occurs before all data can be sent, the NO CARRIER
(3) result code is sent (operates in V.42 mode only).
“OK” response is sent if all data is transmitted before
timeout. S38 = 255 disables timeout and modem dis-
connects only if data is successfully sent or carrier is
lost.
20 0–255 seconds
40 Data Pattern—Data pattern generated during &T4 and
&T5 transmit tests.
0 = All spaces (0s)
1 = All marks (1s)
2 = Random data
00–2
42 Blacklisting—The Si2404 will not dial the same num-
ber more than two times in three minutes. An attempt
to dial a third time within three minutes will result in a
“BLACKLISTED” result code. If the blacklist memory is
full, any dial to a new number will result in a “BLACK-
LIST FULL” result code. Numbers are added to the
blacklist only if the modem connection fails. The %B
command will list the numbers on the blacklists.
0 = disabled
1 = enabled
0 (disabled) 0–1
43 Dial Attempts to Blacklist.
When blacklisting is enabled with S42, this value con-
trols the number of dial attempts that will result in a
number being blacklisted.
40–4—
44 Blacklist Timer.
Period during which blacklisting is active.
180 0–255 seconds
Table 14. S-Register Description (Continued)
Definition
S-Register
(Decimal)
Function Default
(Decimal)
Range Units