Multitech MultiModem MT4X56USB User Manual page 50

MultiModemUSB User Guide
S38 decimal
S42 decimal
S43 decimal
S48 decimal
S89 seconds
S108 decimal
S109 decimal
50
0–23 1 Sets "downstream" data rate where K56flex 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.
Upstream data rates
Upstream V.90 data rates are 4800 to 33,600 bps in 2400
bps increments.
0–1 1 Enables/disables the 56K auto rate. When 56K auto is
disabled, fallback to V.34 is also disabled. 0 = disable;
1 = enable.
0–1 1 For For testing and debugging only. Enables/disables
V.32bis start-up auto mode operation. 0 = disable; 1 =
enable.
7 or 128 7 Enables (7) or disables (128) LAPM negotiation. The follow-
ing table lists the S36 and S48 configuration settings for
certain types of connections.
S36=0, 2
S36=1, 3
S36=4, 6
S36=5, 7
0, 5–255 10 Sets the length of time in the off-line command mode before
the modem goes into standby mode. A value of zero
prevents standby mode; a value of 1–4 sets the value to 5.
0–3, 6, 7 6 Selects the 56K digital loss if using the modem thru 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
0--2 1 Sets one of three 56K operating modes:
K56flex mode, V.90 mode, or Auto-mode.
S109=2 forces V.90 connections for testing purposes, etc. S109
sets the 56K operating mode as shown below:
0 = V.90 disabled
1 = K56flex or V.90 (Dual mode enabled)
2 = V.90 only (K56flex disabled).
0 = V.90 disabled
1 = V.90 autorate K56flex 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
22 = 54,666 bps
23 = 56,000 bps
S48=7 S48=128
LAPM or hangup Do not use
LAPM or async Async
LAPM, MNP, or hangup MNP or hangup
LAPM, MNP, or aysnc MNP or async
MT4X56USB