Multitech MT5634ZBA-USB manual S37, S38, Rates K56flex Rates

Chapter 4 - AT Commands, S-Registers and Result Codes

Register	Unit	Range	Default	Description
S37	decimal	0–19	0	Sets the maximum V.34 “upstream” speed at
				which the modem attempts to connect.
				0	= maximum modem speed
				1	= reserved
				2	= 1200/75 bps
				3	= 300 bps
				4	= reserved
				5	= 1200 bps
				6	= 2400 bps
				7	= 4800 bps
				8	= 7200 bps
				9	= 9600 bps
				10 = 12000 bps
				11 = 14400 bps
				12 = 16800 bps
				13 = 19200 bps
				14 = 21600 bps
				15 = 24000 bps
				16 = 26400 bps
				17 = 28800 bps
				18 = 31200 bps
				19 = 33600 bps
S38	decimal	0–23	1	Sets the maximum 56K “downstream” speed
				at which the modem attempts to connect. The
				default maximum speed is 56K bps.

V.90 Rates		K56flex Rates
0	= V.90 disabled
1	= V.90 enabled*
2	= 28000 bps	2 = 32000 bps
3	= 29333 bps	3 = 34000 bps
4	= 30666 bps	4 = 36000 bps
5	= 32000 bps	5 = 38000 bps
6	= 33333 bps	6 = 40000 bps
7	= 34666 bps	7 = 42000 bps
8	= 36000 bps	8 = 44000 bps
9	= 37333 bps	9 = 46000 bps
10 = 38666 bps		10 = 48000 bps
11 = 40000 bps		11 = 50000 bps
12 = 41333 bps		12 = 52000 bps
13 = 42666 bps		13 = 54000 bps
14 = 44000 bps		14 = 56000 bps
15 = 45333 bps
16 = 46666 bps
17 = 48000 bps
18 = 49333 bps
19 = 50666 bps
20 = 52000 bps
21 = 53333 bps
22 = 54666 bps
23 = 56000 bps

*with automatic speed selection at maximum modem speed

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