Filter
Top Products
Chapter 5 – AT Commands, S-Registers, and Result Codes
SocketModem Global MT5634SMI Developer’s Guide 41
18 = 31200 bps
19 = 33600 bps
S38 decimal 0–23 1 Sets “downstream” data rate where V.90 provides rates of 28,000 to
56,000 bps in increments of 1,333 bps.
0 = V.90 disabled
1 = V.90 auto rate
2 = 28,000 bps
3 = 29,333 bps
4 = 30,666 bps
5 = 32,000 bps
6 = 33,333 bps
7 = 34,666 bps
8 = 36,000 bps
9 = 37,333 bps
10 = 38,666 bps
11 = 40,000 bps
12 = 41,333 bps
13 = 42,666 bps
14 = 44,000 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
22 = 54,666 bps
23 = 56,000 bps
Upstream data rates: Upstream V.90 data rates are 4800 to 33,600
bps in 2400 bps increments.
S43 decimal 0–1 1 For testing and debugging only. Enables/disables V.32bis start-up
auto mode operation. 0 = disable; 1 = enable.
S48 decimal 7 or 128 7 Enables (7) or disables (128) LAPM negotiation. The following table
lists the S36 and S48 configuration settings for certain types of
connections.
S48=7 S48=128
S36=0, 2 LAPM or hang up Do not use
S36=1, 3 LAPM or async Async
S36=4, 6 LAPM, MNP, or hang up MNP or hang up
S36=5, 7 LAPM, MNP, or async MNP or async
S89 seconds 0, 5–255 10 Sets the length of time in the off-line command mode before the
modem goes into standby mode or “sleep mode”. A value of zero
prevents standby mode; a value of 1–4 sets the value to 5. Standby
mode (sleep mode or low power mode) is controlled by S89. It
programs the number of seconds of inactivity before the modem will
go to sleep. The default value is 0. A value of 0 disables standby
mode. The modem will wake on an incoming ring or an AT command.
S108 decimal 0–3, 6, 7 6 Selects the 56K digital loss if using the modem through a PBX line.
The default value is -6 dB loss, the value used when calling from a
typical POTS line long distance.
0 = -0 dB digital loss, no robbed-bit signaling
1 = -3 dB PBX digital loss
2 = -2 dB digital loss
3 = -3 dB digital loss
6 = -6 dB digital loss
7 = -0 dB digital loss with robbed-bit signaling