Rockwell (not HCF)

Rockwell HCF

USRobotics

*Changing the last number of this string will vary your modem’s connection speed. The higher the number, the faster it will try to connect and vice versa.
&N38 56000
&N37 54666
&N36 53333
&N35 52000
&N34 50666
&N33 49333
&N32 48000
&N31 46666
&N30 45333
&N29 44000
&N28 42666
&N27 41333
&N26 40000
&N25 38666
&N24 37333
&N23 36000
&N22 34666
&N21 33333
&N20 33600
&N19 31200
&N18 28800
&N17 26400
&N16 24000
&N15 21600
&N14 19200
&N13 16800
&N12 14400

ATS12=0 for extreme connection problems

ATS32=98 will force V.34 speeds, in the case of a very poor connection.
ATS58=1 will force V.90 with a USR Courier modem.

Common manufacturers using this chipset are Telepath and 3 Com.

Lucent

AT-V90=0S38=6
*Changing the last digit of this string will vary your modem’s connection speed. The higher the number, the faster it will try to connect and vice-versa.
=3 (34000 BPS)
=4 (36000 BPS)
=5 (38000 BPS)
=6 (40000 BPS)
=7 (42000 BPS)
=8 (44000 BPS)
=9 (46000 BPS)
=10(48000 BPS)
=11(50000 BPS)
=12(52000 BPS)
=13(54000 BPS)
=14(56000 BPS)

ATS109=6 (forces Kflex if the modem is not a WIN)
ATS202=32 (disables V.90 for a hardware [external] modem)
Common manufacturers using this chipset are Aztec and Phoebe.

Otherwise, call the modem manufacturer or the computer place of purchase and they will be able to provide an Initialization String to control your modem speed or force/disable protocols.

HSP Chipset

Motorola SM 56 Command Option Description

*MM0 V.34 Auto Modulation
*MM12 V.34 Only
*MM13 K56flex™ Only
*MM14 K56flex™  Auto-modulation
*MM15 V.90 OnlyCommand Option Description
*MM16 V.90 Auto
Command Option Description
%B  Maximum Modulation RateSets the rate that the modem uses when
connecting in a data modulation mode for performing functions such as
Internet access or file transfer
%B0 Maximum modem rate that the modem supports
%B9 14.4 KBPS
%B11 16.8 KBPS
%B12 19.2 KBPS
%B13 21.6 KBPS
%B14 24.0 KBPS
%B15 26.4 KBPS
%B16 28.8 KBPS
%B17 31.2 KBPS
%B18 33.6 KBPS
%B19 32.0 KBPS
%B20 34.0 KBPS
%B21 36.0 KBPS
%B22 38.0 KBPS
%B23 40.0 KBPS
%B24 42.0 KBPS
%B25 44.0 KBPS
%B26 46.0 KBPS
%B27 48.0 KBPS
%B28 50.0 KBPS
%B29 52.0 KBPS
%B30 54.0 KBPS
%B31 56.0 KBPS
%B32 58.0 KBPS
%B33 60.0 KBPS
%B34 28000 BPS
%B35 29333 BPS
%B36 30666 BPS
%B37 33333 BPS
%B38 34666 BPS
%B39 37333 BPS
%B40 38666 BPS
%B41 41333 BPS
%B42 42666 BPS
%B43 45333 BPS
%B44 46666 BPS
%B45 49333 BPS
%B46 50666 BPS
%B47 53333 BPS
%B48 54666 BPS
%C  Data CompressionDetermines whether the modem implements methods of
increasing the effective data rate by reducing the number of bits used
to represent data
%C0 Disable Compression
%C1 Enable Compression
%D  Disconnect Buffer DelayControls the delay after detection of a
disconnect request before the modem disconnects from the telephone line
%D0 Disable Delay
%Dn Delay for n Seconds (n = 1 to 255)
%L  Minimum Modulation Rate
%L0 Minimum modem rate that the modem supports
%L1 300 BPS
%L2 1.2 KBPS
%L3 2.4 KBPS
%L4 4.8 KBPS
%L7 7.2 KBPS
%L6 9.6 KBPS
%L8 12.0 KBPS
%L9 14.4 KBPS
%L11 16.8 KBPS
%L12 19.2 KBPS
%L13 21.6 KBPS
%L14 24.0 KBPS
%L15 26.4 KBPS
%L16 28.8 KBPS
%L17 31.2 KBPS
%L18 33.6 KBPS
%L19 32.0 KBPS
%L20 34.0 KBPS
%L21 36.0 KBPS
%L22 38.0 KBPS
%L23 40.0 KBPS
%L24 42.0 KBPS
%L25 44.0 KBPS
%L26 46.0 KBPS
%L27 48.0 KBPS
%L28 50.0 KBPS
%L29 52.0 KBPS
%L30 54.0 KBPS
%L31 56.0 KBPS
%L32 58.0 KBPS
%L33 60.0 KBPS
%L34 28000 BPS
%L35 29333 BPS
%L36 30666 BPS
%L37 33333 BPS
%L38 34666 BPS
%L39 37333 BPS
%L40 38666 BPS
%L41 41333 BPS
%L42 42666 BPS
%L43 60.0 KBPS
%L44 46666 BPS
%L45 49333 BPS
%L46 50666 BPS
%L47 53333 BPS
%L48 54666 BPS

Copyright© Motorola ISG 1998


Does not respond to a network request

Rockwell HCF Chipset: +MS=V34
Straight Rockwell Chipset: +MS=11,1
Lucent Technologies (LT Winmodem): -V90=0
Venus Chipset: S109=0
Diamond SupraExpress: AT&FW2+MS=V90

 

Very Helpful Modem Sites:
http://modems.rosenet.net
http://www.56k.com