56k Usb Modem

56K USB Modem: User Guide

Home o Introduction o Features o Warranty o Regulatory o Copyright

Installation o Modem Installation o Modem Uninstallation

USR MOH o Introduction o Using MoH o MoH FAQ

Reference o Using Commands o Help Commands o Data and General Commands o S-Registers o V.92 Commands o Fax Commands o Voice Commands

Help o Troubleshooting o Support

Data and General Commands

Every command except A/, +++, and A> must begin with the AT prefix and be executed by

pressing ENTER.

Example: ATDL dials the last number called.

Comm Function Default Options

and

+++ Escapes to

online-

command

mode. Does

not require

the AT prefix

or a carriage

return.

None. None.

$ Displays help

for basic

commands.

None. None.

A Manual

Answer. Goes

off hook in

answer mode.

Pressing any

key before the

connection is

complete

aborts the

operation.

None. None.

A/ Re-executes

the last issued

command.

Used mainly to

redial. Does

not require

the AT prefix

or a carriage

return.

None. None.

A> Re-executes

the last issued

command

continuously

until the user

None. None.

intervenes or

the command

is executed

forever. Does

not require

the AT prefix

or a carriage

return.

Bn Set

handshaking

options.

B1 when the

modem is at

1200 bps.

B16 when the

modem is at 300

bps.

B0 Selects CCITT V.22 mode when the modem is a

1200 bps.

B1 Selects Bell 212A when the modem is at 1200 bps.

Use only if the modem is not required to answer

V.34-type calls.

B2, B3 Deselects V.23 reverse channel.

B15 Selects V.21 when the modem is at 300 bps.

B16 Selects Bell 103J when the modem is at 300 bps.

Dn Dials the

specified

phone

number. After

ENTER is

pressed,

pressing any

key before the

connection is

complete

aborts the

operation. The

default dialling

method is

tone (ATDT).

None. The maximum length of a dial string is 60 characters.

D0D9 Numeric digits.

D#, D* Extended touch-tone pad tones.

DL Dials the last phone number dialled.

DL? Displays last phone number dialled.

DP Pulse (rotary) dial.

DT Tone (DTMF) dial

DW Waits for second dial tone (X2 or X4); linked to S6

register.

D! (Exclamation point) Flashes the switch hook.

D, (Comma) Pauses. Linked to S8 register.

D/ (Slash) Delays for 125 ms. before proceeding with

dial string.

D; (Semicolon) Returns to Command mode after

dialling.

D@ Dials, waits for quiet answer, and continues (X3 or

higher).

D" (Quotation mark) Dials with alphabetic letters

between quotes converted to numbers.

D^ (Circumflex) Disables data calling tone

transmission.

DS=n Dials the

phone number

string stored in

NVRAM at

position n.

Phone

numbers are

stored with

the &Zn=s

command.

None. 02

En Sets local

echo.

E1 E0 Modem does not display keyboard commands.

E1 Modem displays keyboard commands.

H Controls hook

functions.

H0 H0 Modem goes on-hook.

H1 Modem goes off-hook.

In Displays the

information

associated

None. I0 Four-digit product code.

I1 Results of ROM checksum.

with n. I2 Results of RAM checksum.

I3 Product type.

I4 Current modem settings.

I5 Nonvolatile memory (NVRAM) settings.

I6 Link diagnostics.

I7 Product configuration.

I9 Plug and Play information.

I11 Extended link diagnostics.

I92 V.92 settings.

Ln Controls

speaker

volume.

Note:Modem

does not have

a speaker.

Command is

included for

compatibility.

L1 L0 Low.

L1 Low.

L2 Medium.

L3 High.

Mn Operates

speaker.

M1 M0 Speaker always OFF.

M1 Speaker ON until CONNECT.

M2 Speaker always ON.

M3 Speaker ON after dial, until CONNECT.

N Controls

modulation

handshake

N1 0 When originating or answering, this is for

handshake only at the communication standard

specified by register S37 and the B

command.

1 When originating or answering, this is for

handshake only at the communication standard

specified by register S37 and the B

command. During handshake, may fall back to a

lower speed.

On Returns

online.

None. O0 Returns online from command mode.

O1 Returns online and retrains.

P Sets pulse

dialling (rotary

dialling).

None. None.

All subsequent D commands use pulse dialling

until either the T command or a tone dial modifier is

received by the modem.

The modem uses tone dialling by default.

Qn Displays/suppr

esses result

codes.

Q0 Q0 Displays result codes.

Q1 Quiet mode; does not display result codes.

Sr=n Sets S-register

r to the value

n. For register

values, see S-

Registers.

None. None.

T Sets DTMF

tone dialling.

None. None. The modem uses tone dialling by default.

Vn Displays

verbal/numeri

c result codes.

V1 V0 Displays numeric result codes.

V1 Displays verbal result codes.

Wn Enables tone

detection

options.

W2 W0 CONNECT result code reports DTE receive speed.

Disables protocol result codes.

W1 CONNECT result code reports DTE receive speed.

Enables protocol result codes.

W2 CONNECT result code reports DCE receive speed.

Enables protocol result codes.

Xn Sets result

codes

displayed.

X4 This command enables tone detection options used in the

dialling process. As each function is chosen, the modems

result codes are also affected. Therefore, this command is

frequently used to control the modems responses. The

primary function of this command is to control call response

capabilities.

Commands

Command Extended

Result Codes

Dial Tone

Detect

Busy Tone

Detect

X0 Disabled Disabled Disabled

X1 Enabled Disabled Disabled

X2 Enabled Enabled Disabled

X3 Enabled Disabled Enabled

X4 Enabled Enabled Enabled

X5, X6 Enabled Enabled Enabled

X7 Disabled Enabled Enabled

Option Description

Function Enabled Disabled

Ext

Result

Codes

Displays basic result

codes, connect messages

with data rate, and an

indication of the

modem's error correction

Displays the basic

result codes.

and data compression

operations.

Dial Tone

Detect

Dials upon detection of a

dial tone and disconnects

the call if the dial tone is

not detected within 10

seconds.

Dials a call

regardless of

whether the

modem detects a

dial tone. Register

S6 contains the

dial delay.

Busy

Tone

Detect

Monitors for busy tones. Ignores all busy

tones.

Option Result Codes

Command Result Codes

X0 OK Ring Error

Connect No

Carrier

X1 OK Ring Error

Connect No

Carrier

X2 OK Ring Error

Connect No

Carrier

No dial

tone

X3 OK Ring Error

Connect No

Carrier

Busy

Blacklisted

X4 OK Ring Error

Connect No

Carrier

Busy

Blacklisted Delayed No dial

tone

Call Waiting

detected

X5, X6 OK Ring Error

Connect No

Carrier

Busy

Blacklisted Delayed No dial

tone

Call Waiting

detected

X7 OK Ring Error

Connect No

Carrier

Yn Selects reset

default

configuration.

Y0 Y0 Selects stored profile (&W).

Y1 Selects stored profile (&W).

Y2 Selects factory configuration 0 (&F0).



Zn Resets

modem.

Z0 Z0 Resets the modem to NVRAM profile selected by Y

command.

Z1 Resets the modem to the stored profile (&W).

Z2 Resets the modem to the stored profile (&W).

Z3 Resets the modem to factory default profile 0

(&F0).


(&F1).


(&F2).

#CID=n Controls Caller

ID.

None. #CID=0 Disables Caller ID.

#CID=1 Enables formatted Caller ID.

#CID=2 Enables unformatted Caller ID.

#UD Displays

Unimodem

Diagnostics.

None. None.

%B Displays

numbers in

blacklist.

(Country

selection must

support

blacklist.)

None. None.

%En Controls %E2 %E0 Fallback/Fallforward disabled.

Fallback/Fallfo

rward.

%E1 Fallback enabled, Fallforward disabled.

%E2 Fallback/Fallforward enabled.

&An Enables/disabl

es added

result code

subsets (see

Xn).

&A3 &A0 ARQ result codes disabled.

&A1 ARQ result codes enabled.

&A2 V.xx modulation indicator added.

&A3 Protocol indicators added: LAPM/MNP/NONE

(error control) and V42bis/MNP5 (data

compression).

&Bn Manages the

modem's

serial port

rate.

&B1 &B0 Serial DTE rate is variable, follows connection rate.

&B1 Fixed DTE rate.

&Cn Controls

Carrier Detect

(CD) signal.

&C1 &C0 CD override.

&C1 Normal CD operation.

&Dn Controls Data

Terminal

Ready (DTR)

operations.

&D2 &D0 Data Terminal Ready (DTR) override.

&D1 DTR toggle causes online Command mode.

&D2 Normal DTR operation.

&D3 Resets on receipt of DTR.

&Fn Resets the

modem and

loads a read-

only (non-

programmable

) factory

configuration.

None. &F0 Loads a generic template.

&F1 Loads the hardware flow control template.

&F2 Loads the software flow control template.

&Gn Sets Guard &G0 &G0 No guard tone, U.S. and Canada.

Tone. &G1 550 Hz guard tone; requires B0 setting.

&G2 1800 Hz guard tone; requires B0 setting.

&Hn Sets Transmit

Data (TD) flow

control.

&H1 &H0 Flow control disabled.

&H1 Hardware flow control, Clear to Send (CTS).

&H2 Software flow control, XON/XOFF.

&Kn Enables/disabl

es data

compression.

&K1 &K0 Data compression disabled.

&K1 Auto enable/disable.

&Mn Sets Error

Control (ARQ)

for

connections at

1200 bps and

higher.

&M4 &M0 Normal mode, error control disabled.

&M4 Auto Normal/ARQ.

&M5 ARQ required for connection.

&Nn Sets S registers

to attempt

forced speed.

&N0 n Rate S28 S37 S38

0 Auto rate 1 0 1

1 300 V.21/B103 0 3 0

2 1200 V.22 0 5 0

3 2400 V.22bis 0 6 0

4 4800 V.32 0 7 0

5 7200 V.32 0 8 0

6 9600 V.32 0 9 0

7 12000 V.32bis 0 10 0

8 14400 V.32bis 0 11 0

9 16800 V.32ter 0 12 0

10 19200 V.32ter 0 13 0

11 21600 V.34 1 14 0

12 24000 V.34 1 15 0

13 26400 V.34 1 16 0

14 28800 V.34 1 17 0

15 31200 V.34+ 1 18 0

16 33600 V.34+ 1 19 0

17 28000 V.90 1 0 2

18 29333 V.90 1 0 3

19 30666 V.90 1 0 4

20 32000 V.90 1 0 5

21 33333 V.90 1 0 6

22 34666 V.90 1 0 7

23 37333 V.90 1 0 8

24 37333 V.90 1 0 9

25 38666 V.90 1 0 10

26 40000 V.90 1 0 11

27 41333 V.90 1 0 12

28 42666 V.90 1 0 13

29 44000 V.90 1 0 14

30 45333 V.90 1 0 15

31 46666 V.90 1 0 16

32 48000 V.90 1 0 17

33 49333 V.90 1 0 18

34 50666 V.90 1 0 19

35 52000 V.90 1 0 20

36 53333 V.90 1 0 21

37 54666 V.90 1 0 22

38 56000 V.90 1 0 23

&Pn Sets the make-

to-break ratio.

&P1 &P0 U.S. ratio: 39%61% at 10 pulses per second

&P1 UK ratio: 39%61% at 10 pulses per second

&P2 UK ratio: 39%61% at 20 pulses per second

(Japan)

&Sn Sets the Data

Set Ready

(DSR) option.

&S0 &S0 DSR override. DSR is always on.

&S1 DSR comes on after establishing a connection and

goes off when the connection ends.

&Tn Sets test

modes.

None. &T0 Ends testing.

&T1 Local Analogue Loopback (LAL).

&T3 Local Digital Loopback (LDL).

&Wn Stores current

configuration

in NVRAM

template.

None. &W0

&Yn Sets break

handling.

&Y1 &Y0 Destructive, but doesn't send break.

&Y1 Destructive, expedited.

&Y2 Nondestructive, expedited.

&Y3 Nondestructive, unexpedited.

&Zn=s Stores phone

number string

s in NVRAM at

position n.

None. 02 Example: AT&Z1=18005551212 stores the phone

number 18005551212 in position 1. Use the DS=n

command to recall and dial the number.

\An Selects

maximum

MNP block

size.

\A3 \A0 64 characters.

\A1 128 characters.

\A2 192 characters.

\A3 256 characters.

\Bn Sends break. \B3 19 Expressed in hundreds of milliseconds.

\Gn Sets modem

port flow

control.

\G0 \G0 The modem processes XON/XOFF flow control

characters locally.

\G1 The modem passes XON/XOFF flow control

characters.

\X Sets

XON/XOFF

pass through.

\X0 \X0 The modem processes XON/XOFF flow control

characters locally.

\X1 The modem passes XON/XOFF flow control

characters.

+A8E=

n

Sets V.8

operation.

+A8E=1,1,C1,1 This is a compound parameter. The full syntax is as follows:

+A8E=,,,

Valid values for

Value Meaning

1 Enables DCE-controlled V.8 origination

negotiation.

6 Enables DCE-controlled V.8 origination

negotiation, issue +A8x indications.

Valid values for

Value Meaning

1 Enable DCE-controlled V.8 answer negotiation.

5 Disable DCE-controlled V.8 answer negotiation,

issue +A8x indications.

contains the V.8 CI signal call function octet.

Valid values are 0FF.

Valid values for

Value Meaning

0 Disable V.8 negotiation.

1 Enable DCE-controlled V.8bis negotiation.

2 Enable DTE-controlled V.8 negotiation.

? Displays a list of valid +A8E settings.

+A8E? Display the

current

settings for V.8

or V.8 bis

negotiation.

None. None.

+A8T=

n

Sends a V.8 bis

signal or

message from

the local DCE

when V.80 is

enabled

None. This is a compound parameter. The full syntax is as follows:

+A8T=,,,,,

Valid values for

Value Meaning

0 None.

1 Initiating Mre.

2 Initiating MRd.

3 Initiating CRe, low power.

4 Initiating CRe, high power.

5 Initiating CRd.

6 Initiating Esi.

7 Responding MRd, low power.

8 Responding MRd, high power.

9 Responding CRd.

10 Responding Esr.

Valid values for

Value Meaning

0 Enable detection of initiation signals (default).

1 Enable detection of responding signals .

Valid values for

Value Meaning

0 Enable detection of messages (default).

1 Enable detection of V.8 bis messages.

Valid values for

Value Meaning

0 No delay inserted (default).

1 Insert 1.5 second delay between transmitted V.8

bis signal and the subsequent V.8 bis message.

? Displays a list of valid +A8T settings.

+A8T? Displays the

current +A8T

setting.

None. None.

+DCS= Selects the

data

+DCS=1,1 This is a compound parameter. The full syntax is as follows:

n compression

algorithm. +DCS=,

Valid values for

Value Meaning

0 Disable V.42bis.

1 Enable V.42bis.

Valid values for

Value Meaning

0 Disable V.44.

1 Enable V.44.

2 Enable V.44 for V.92 servers only.

+DR=n Controls data

compression

reporting.

None. 0 Disables the compression report.

1 Enables the compression report.

? Displays a list of valid +DR settings.

+DS=n Configures the

V.42 bis data

compression

method.

+DS=3,0,1024,32 This is a compound parameter. The full syntax is as follows:

+DS=,,,

Valid values for

Value Meaning

0 Does not negotiate V.42 compression.

3 Negotiates V.42 compression in both directions.

For this modem, only direction is variable. The fixed

values of the other parameters is as follows:

Parameter Fixed Value

compression_negotiation 0

max_dict 1024

max_string 32

+DS44

=n

Configures the

V.44 data

compression

method.

+DS44=3,0,0,102

4,1024,

255,255,5120,40

96

This is a compound parameter. The full syntax is as follows:

,,

,,,

,,,

Valid values for

Value Meaning

0 Does not negotiate V.44 compression.

3 Negotiates V.44 compression in both directions.

The value of compression_negotiation is always 0

(never disconnects if V44 is not negotiated).

The value of capability is always 0 (Stream method).

Valid Values for Remaining Parameters

Parameter Valid Values

max_codewords_tx 2562048

max_codewords_rx 2562048

max_string_tx 31255

max_string_4x 31255

max_history_tx 51211008

max_history_4x 51211008

+EB=n Determines

the action

taken when a

break is

received.

+EB=0,,30 This is a compound parameter. The full syntax is as follows:

,,

Valid Values for

Value Meaning

0 Ignores break.

1 Nonexpedited, nondestructive.

2 Expedited, nondestructive.

3 Expedited, destructive.

? Displays a list of valid +EB settings.

This modem does not support the timed parameter.

Valid values for are 3090 in increments of 10. The unit of measure is milliseconds

(ms).

+ER=n Controls error +ER=0 0 Disables error control reporting.

control

reporting.

1 Enables error control reporting.

? Displays a list of valid +ER settings.

+ESA Sets up error

control

parameters.

None. This is a compound parameter. The full syntax is as follows:

+ESA=,,,

,,,

This modem does not use the ,

, and parameters.

Valid values for n

Combination Mode

0,,,,0,0,, Disables CRC generation and checking.

0,,,,1,0,, Causes the DCE to generate a 16-bit CRC in

the transmit direction in framed sub-Mode

and check the CRC in the receive direction.

+GCAP Displays

supported

capabilities.

None. None.

+GCI=n Sets the

country code.

None. Code Country

Code Country

09 Australia 6C Malaysia

0A Austria 73 Mexico

0F Belgium 7B Netherlands

20 Canada 7E New Zealand

31 Denmark 82 Norway

72 Europe 26 People's Republic of China

3C Finland 89 Philippines

3D France 8B Portugal

04 or 42 Germany 9C Singapore

46 Greece 9F South Africa

50 Hong Kong A0 Spain

51 Hungary A5 Sweden

53 India A6 Switzerland

54 Indonesia A9 Thailand

57 Ireland AE Turkey

59 Italy B4 United Kingdom

00 Japan B5 United States of America

61 Korea BC Vietnam

+GCI=? displays a list of valid country codes.

+ILRR=

n

Controls port

rate reporting.

+ILRR=0 0 Disables reporting of local port rate.

1 Enables reporting of local port rate.

? Displays a list of valid +ILRR settings.

+IPR=n Displays DTE

to DCE

transmission

rates.

None. ? Displays a list of supported transmission rates.

+ITF=n Sets the

transmit flow

None. off The signal threshold, in octets, above which the

DCE will generate a flow-off signal.

control

thresholds.

on The signal threshold, in octets, below which the

DCE will generate a flow-on signal.

? Displays a list of valid +ITF settings.

+MR=n Controls

modulation

reporting.

None. 0 Enables modulation reporting.

The DCE transmits the +MRR:,,

and the +MCR: intermediate result codes

to the DTE.

The reported is the current modulation;

the is the transmit rate in bps or is zero if

negotiation fails; the is the receive

channel rate and is only reported when different

receive and transmit rates have been negotiated.

1 Disables modulation reporting.

? Displays a list of valid +MR settings.

+MS=n Controls

modulation.

+MS=V92,1,3120

0,

56000,31200,560

00

This is a compound parameter. The full syntax is as follows:

+MS=,,,

,,

Valid values

Value Meaning

V92 V.92

V90 V.90

V34 V.34

V32B V.32bis

V32 V.32

V22B V.22bis

V22 V.22

Bell212A Bell 212A

V23C V.23, constant carrier, asymmetric FDM

V21 V.21

Bell103 Bell 103

Valid values

Value Meaning

0 Disables automatic modulation negotiation.

If a value is specified for ,

automatic rate selection is disabled and the

modem will try to connect at the specified rate.

1 Enables automatic modulation negotiation.

Valid range

Value Meaning

31200 Determined by modulation selected in

300

56000

Value limited by modulation selected in

.

Valid for each

Value Meaning

V34 240033600 bps in steps of 2400 bps.

V32bis 480019200 bps in steps of 2400 bps.


V22bis 2400 bps.

V22 2200 bps.

V23C Bell212A 1200 bps.

V.21, Bell103 300 bps.

Valid range

Value Meaning

56000 Determined by modulation selected in

300

56000

Value limited by modulation selected in

.

Valid for each

Value Meaning




V32bis 480019200 bps in steps of 2400 bps.


V22bis 2400 bps.

V22 2200 bps.

V23C, Bell212A 1200 bps.

V.21, Bell103 300 bps.

? Displays a list of valid +MS settings.

+VCID=

n

Controls Caller

ID.

+VCID=0 Note that this command is functionally the same as the #CID

command.

0 Disables Caller ID.

1 Enables formatted Caller ID.

2 Enables unformatted Caller ID.

? Displays a list of valid #CID settings.

S-Registers

To change a setting, use the ATSr=n command, where r is the register number and n is a decimal

value from 0 to 255 (unless otherwise indicated).

Example: ATS7=120 sets the time that the modem will wait for a connection from your carrier to

120 seconds.

To view a setting, use the ATSr? command, where r is the register number.

Note: These S-Register values are the default settings for North America. Your default settings

may be different if you live outside North America.

Register Default Function

S0 0 Sets number of rings on which to answer in Auto Answer mode. When set to 0, Auto

Answer is disabled.

S1 0 Counts and stores number of rings from an incoming call. (S0 must be greater than

0.)

S2 43 Stores ASCII decimal code for the escape code character. Default character is +. A

value of 128255 disables escape code.

S3 13 Stores ASCII code for the Carriage Return character. Valid range is 0127.

S4 10 Stores ASCII decimal code for the Line Feed character. Valid range is 0127.

S5 8 Stores ASCII decimal code for the Backspace character. A value of 128255 disables

Backspace key's delete function.

S6 4 Sets number of seconds modem waits before dialling. If Xn is set to X2 or X4, this is

time-out length if no dial tone.

S7 50 Sets number of seconds modem waits for a carrier. May be increased as needed, for

example to allow modem time to establish an international connection.

S8 2 Sets duration, in seconds, for pause (,) option in the Dial (Dn) command. Valid range

is 032.

S9 6 Sets required duration, in tenths of a second, of remote modem's carrier signal

before recognition by your USRobotics modem.

S10 60 Sets duration, in tenths of a second, that modem waits to hang up after loss of

carrier. This guard time allows your modem to distinguish a line disturbance from a

true disconnect (hang up) by the remote modem.

Note: If you set S10 = 255, the modem will not hang up when carrier is lost.

Dropping DTR hangs up the modem.

S11 95 Sets duration and spacing, in milliseconds, of dialled tones.

S12 50 Sets duration, in fiftieths of a second, of guard time for escape code sequence (+++).

S18 0 Test timer for &T loopback testing. Sets the time in seconds of testing before the

modem automatically times out and terminates the test. When set to 0, the timer is

disabled. Valid range is 1255.

S21 52 Sets length, in 10-millisecond units, of breaks sent from the modem to the

computer; applies to MNP or V.42 mode only.

S22 119 Stores ASCII decimal code for the XON character.

S23 55 Stores ASCII decimal code for the XOFF character.

S24 60 Sets duration, in seconds, for the sleep mode timer. The timer activates when there

is no activity in the off-line command state. At timeout, the modem goes into

standby mode. S24 = 0 disables the timer. Valid range is 0, 565.

S28 1 Value Result

0 Disables V.34 modulation.

1 Enables V.34 modulation.

S30 0 Sets the duration, in minutes, for the inactivity timer. The timer activates when there

is no data activity on the line; at timeout, the modem hangs up. S30=0 disables the

timer. Valid range is 0255.

S36 7 Specifies the action to be taken in the event of negotiation failure when error

control is selected.

Used in conjunction with S48, LAPM error control and feature negotiation to

negotiate certain connection types.

Value Result if S48=7 Result if S48=128

0 or 2 V.42 or hang up (Do not use)

1 or 3 V.42 or asynchronous Asynchronous

4 or 6 V.42, MNP, or hang up MNP or hang up

5 or 7 V.42, MNP, or asynchronous MNP or asynchronous

S37 0 Sets the maximum line data rate. In V.90 mode, sets the upstream V.34 rate.

Value Rate Value Rate

0 Auto rate 10 12000 bps

1 Reserved 11 14400 bps

2 1200/75 bps (V.23) 12 16800 bps

3 300 bps 13 19200 bps

4 Reserved 14 21600 bps

5 1200 15 24000 bps

6 2400 bps 16 26400 bps

7 4800 17 28800 bps

8 7200 18 31200 bps

9 9600 19 33600 bps

S38 1 Once a connection type (V.90) is determined, forces a particular downstream rate. A

value of zero disables both connection types and allows a more reliable V.34

connection. The default value of 1 lets the modem select the downstream rate

automatically. Other values force the downstream rate, with fallback to V.34 if

unsuccessful at the configured rate.

Value Rate Value Rate

0 V.90 disabled 12 41333 bps

1 Auto rate 13 42666 bps

2 28000 bps 14 44000 bps

3 29333 bps 15 45333 bps

4 30666 bps 16 46666 bps

5 32000 bps 17 48000 bps

6 33333 bps 18 49333 bps

7 34666 bps 19 50666 bps

8 36000 bps 20 52000 bps

9 37333 bps 21 53333 bps

10 38666 bps 22 54666 bps

11 40000 bps 23 56000 bps

S48 Enables or disables error control and feature negotiation. Works in conjunction with

S36 to determine the type of error correction method to use.

Value Result

7 Enables negotiation.

128 Disables negotiation.

2012 U.S. Robotics Corporation

56k Usb Modem

Documents

Transcript of 56k Usb Modem