Specifications

Si2493
Rev. 1.3 43
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
41 V.34 symbol rate - Symbol rate for V.34 when using the
&T4 and &T5 commands.
0 = 2400 symbols/second
1 = 2743 symbols/second
2 = 2800 symbols/second
3 = 3000 symbols/second
4 = 3200 symbols/second
5 = 3429 symbols/second
A valid combination of symbol rate (S41) and data rate
(&G) must be selected.
Symbol Rate
Allowable Data Rates
2400 2400–21600
2743 4800–26400
2800 4800–26400
3000 4800–28800
3200 4800–31200
3429 4800–33600
00–5
Table 13. S-Register Description (Continued)
Definition
S-Register
(Decimal)
Function Default
(Decimal)
Range Units