Silicon Laboratories Si2404, Manual

Page: 97 / 307

AN93
Rev. 1.4 97
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
0 0–5 –
42 Blacklisting—The ISOmodem does not dial the same
number more than two times in S44 seconds. An
attempt to dial a third time within S44 seconds results
in a BLACKLISTED result code. If the blacklist mem-
ory is full, any dial to a new number will result in a
BLACKLIST FULL result code. Numbers are added to
the blacklist only if the modem connection fails. The
%B command lists 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 result in a num-
ber being blacklisted. 4 0–4 –
44 Blacklist Timer
Period during which blacklisting is active 180 0–255 seconds
50 Minimum on-hook time—Modem remains on-hook for
S50 seconds. Any attempt to go off-hook is delayed
until this timer expires. 3 0–255 seconds
51 Number to start checking for an outside PBX line. 1 0–9 –
Table 56. S-Register Descriptions (Continued)
Definition
S Register
(Decimal)
Function Default
(Decimal)
Range Units