Multi-Tech Systems MT5634ZLXFE - Manual (Page 22)

Chapter 4 – AT Commands, S-Registers, and Result Codes
MT5634ZLX, MT5634ZLXI, MT5634ZLX/FE User Guide 22
Register Range
Factory
Default
Description
18 115200 bps
S18 0–255 000 Sets the length of time, in seconds, that the modem conducts a test
(commanded by “AT&Tn”) before returning to command mode. If this
register value is zero, the test automatically terminates, the test progress
must be ended by issuing “AT&T0” or “ATH” commands.
S25 0–255 005 Sets the length of time, in hundredths of a second, which the modem
ignores before hanging up.
S30 0–90 000 Controls the inactivity timer, which sets the length of time, in minutes, that
the modem counts when there is no data flow in or out of the DTE serial
port. A connection is disengaged when the counter reaches the preset
value. Setting to S30 =0 disables the inactivity timer.
S36 0–7 Specifies the action to take in the event of a negotiation failure when error
control is selected. (See S48)
S37 0–19 0 Sets the desired DCE speed (line speed).
0 Attempt to connect at the last “AT” speed
3 Attempt to make a 300 bps connection
5 Attempt to make a 1200 bps connection
6 Attempt to make a 2400 bps connection
7 Attempt to make a 4800 bps connection
8 Attempt to make a 7200 bps connection
9 Attempt to make a 9600 bps connection
10 Attempt to make a 12000 bps connection
11 Attempt to make a 14400 bps connection
12 Attempt to make a 16800 bps connection
13 Attempt to make a 19200 bps connection
14 Attempt to make a 21600 bps connection
15 Attempt to make a 24000 bps connection
16 Attempt to make a 26400 bps connection
17 Attempt to make a 28800 bps connection
18 Attempt to make a 31200 bps connection
19 Attempt to make a 33600 bps connection
S38 0–23 Sets “downstream” data rate where K56 provides rates of
32,000 to 56,000 in 2,000 bps increments, V.90 provides rates of
28,000 to 56,000 bps in increments of 1,333 bps.
0 = V.90 disabled
1 = V.90 autorate
K56 rates
2 = 28,000 bps 2 = 32,000 bps
3 = 29,333 bps 3 = 34,000 bps
4 = 30,666 bps 4 = 36,000 bps
5 = 32,000 bps 5 = 38,000 bps
6 = 33,333 bps 6 = 40,000 bps
7 = 34,666 bps 7 = 42,000 bps
8 = 36,000 bps 8 = 44,000 bps
9 = 37,333 bps 9 = 46,000 bps
10 = 38,666 bps 10 = 48,000 bps
11 = 40,000 bps 11 = 50,000 bps
12 = 41,333 bps 12 = 52,000 bps
13 = 42,666 bps 13 = 54,000 bps
14 = 44,000 bps 14 = 56,000 bps
15 = 45,333 bps
16 = 46,666 bps
17 = 48,000 bps
18 = 49,333 bps
19 = 50,666 bps
20 = 52,000 bps
21 = 53,333 bps Note:Upstream V.90 data rates are
22 = 54,666 bps 4800 to 33,600 bps in 2400 bps
23 = 56,000 bps increments.
S48 7 or 128 7 Enables (7) or disables (128) LAPM negotiation. The following table lists