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Bad Phone Lines? Here are some tricks to manipulate your modem

Bad Phone Lines? Here are some tricks to manipulate your modem

Courier 56K V.90 off

s58=32

Courier 56K x2 off

s58=1

Courier 56K v.34

s58=34

Courier 56K V.90

s58=0

Sportester 56K V.90 off

s32=66

Sportester 56K x2 off

s32=32

Sportester 56K x2 off

s32=34

Sportester 56K v.34

s32=98

Sportester 56K V.90

s32=2

X2 56K Limited to 33.6

s32=32

X2 V.90 Limited to 33.6

s32=64

Acer

 

56KFlex Limited to 33.6

+ms=11,0,9600,3360

56KFlex Limited to 33.6

+ms=11,1

56k HCF V.90

+ms=v90

56k HCF 56kflex

+ms=k56flex

56k HCF 33.6 nide

+ms=v34

56k HCF V.90 (to disable V.90)

+ms=v34,0,19200,33

 

If you have a Motorola SM 56k :-

Minimum System Requirements
150MHz Pentium Processor
with 256K L2 cache

To disable 56k Flex on a flex Motorola: +ms=11,0,9600,33

How to disable v.90: at*mm15
kflex: at*mm14
v.34 at*mm11

For Most Rockwell Chips

V.90 preferred (K56flex will still work)

+MS=12,1

V.90 only, K56flex and V.34 disabled*

+MS=12,1,34667,56000

K56flex perferred (V.90 will still work)*

+MS=56,1

K56flex only, V.90 and V.34 disabled*

+MS=56,1,34000,56000

Disable V.90 and K56flex, use V.34 (28.8/333.6)

+MS=11,1

Remember that a Rockwell-Based K56flex Modem upgraded to V.90 no longer supports K56flex

For Rockwell HCF chips

V.90 preferred (K54flex will still work)

+MS=V90

K56flex preferred (V.90 will still work)

+MS=K56Flex

Disable V.90 and K56flex, use V.34 (28.8/33.6)

+MS=V34

For Venus Chipsets

Enable V.90

-V90=1

Disable V.90

-V90=0

Enable K56flex

S38=1

Disable K56flex

S38=0

For Venus Chipsets (mostly used in External Modems)

K56flex only (V.90 Disabled)

S109=0

K56flex or V.90*

S109=1

V.90 only (K56flex disabled)

S109=2

Disable K56flex and V.90 (use V.34)

S38=0

*Which protocol will be used? Assuming that the ISP supports both, it
depends on the firmware. Some version will prefer K56flex,
others will Prefer V.90. Click here for more common init strings

 

How do I disable X2,V.90 or Flex to be able to connect to 33.6 K modem.

If you have a 56K modem but you're dialing into a V.34 modem bank, your modem will still try to negotiate a 56K connection, even though it's impossible. You may want to use one of the commands below to tell the modem to not attempt a 56K connection. Check before if your modem supports X2 or Flex only, X2 with V.90 compatible or Flex with V.90 compatible.

Modems 56K init string

Modem Type and Model

String

Acer56K External (X2 chips)

S32=66

Compaq Presario 56k DFI

-V90=0

Hayes (Rockwell chips)

+MS=11,1,300,33600

Magic Xpress 56 K external (Flex+V.90)

S109=0

Megahertz (x2 chip)

S32=66

Supra 56K Internal V90 mode

-V90=0 (To connect with 33.6 modem)

Supra Express 56K Internal (another rockwell chips)

-V90=0

US-Robotic Sporster (x2 xhip)

S32=66

Viking v.90 + k56 Flex PC-card

+MS=11,1,300,33600

Xircom (another Rockwell chips)

+MS=V34

For X2 USRobotics Chips.

X2 Only

x2 off

x2 off, V.8 on

Sportster**

S32=32

S32=34

Courier

S58=1

S58=1

X2 Plus V.90

x2 on, V.90 off

x2 off, V.90 on

Both off

Both on*

Sportster**

S32=66

S32=34

S32=98

S32=2

Courier

S58=32

S58=1

S58=33

S58=0

The other X2 modems use Sportster. Modem that works with init string are : USRobotics, Megahertz 

Most Rockwell chips.

Flex Only

For Rockwell-based K56flex modems that do not also support V.90, add +MS=11,1 to the end of your modem init string.

Flex Plus V.90

V.90 for Loxinfo (Phuket) connections

N+MS=12,1,34667,56000

V.90 preferred (K56flex will still work)*

+MS=12,1

V.90 only, K56flex and V.34 disabled*

+MS=12,1,34667,56000

K56flex preferred (V.90 will still work)*

+MS=56,1

K56flex only, V.90 and V.34 disabled*

+MS=56,1,34000,56000

Disable V.90 and K56flex, use V.34 (28.8/33.6)

+MS=11,1,300,33600

For Rockwell HCF chips:

V.90 preferred (K56flex will still work)

+MS=V90

K56flex preferred (V.90 will still work)

+MS=K56FLEX

Disable V.90 and K56flex, use V.34 (28.8/33.6)

+MS=V34

Lucent chipset modems

For Lucent-based K56flex modems that do not also support V.90, add S38=0 to the end of your modem init string.

For Lucent-based modems that do support V.90, use one of the following strings.

For Apollo (LT Win Modem) and Mars (LT PCI Win Modem) chipsets:

Enable V.90

-V90=1

Disable V.90

-V90=0

Enable K56flex

S38=1

Disable K56flex

S38=0

Lucent Chipset

Enable V.90

-V90=1

Disable V.90

-V90=0

See current -V90 setting with explanation

-V90? in a terminal

Enable K56flex

S38=1

Disable K56flex

S38=0

For Venus chipsets (mostly used in external modems):

K56flex only (V.90 disabled)

S109=0

K56flex or V.90*

S109=1

V.90 only (K56Flex disabled)

S109=2

DIAL-UP ACCESS GETTING FASTER
The new V.92 dial-up modem standard promises to maximize the limited potential of analog connections. Once Internet Service Providers upgrade their hardware to handle the V.92 standard, the new protocol will shave a few seconds off of logon time, allow free Internet call waiting, and speed data conversion for faster downloads and uploads. Actiontec's Lesley Kirchman notes that, while the future definitely belongs to broadband, the V.92 standard could be the last great leap forward in analog modem technology. ISPs America Online, EarthLink, and MSN have yet to adopt the technology because it is so new, but representatives have promised that the companies will soon test and debug V.92. Among the new features are "Quick Connect" technology, which helps a modem to learn connection patterns and hook up more quickly, and the new V.44 compression protocol that makes text and Web pages move faster. (
Washington Post, 23 February 2001)

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