background image

 

Chapter 5 – Callback Security 

This

 

chapter

 

describes

 

how

 

to

 

use

 

callback

 

security

 

with

 

your

 

modem.

 

Callback

 

security

 

protects

 

your

 

network

 

from

 

unauthorized

 

access

 

and

 

helps

 

control

 

long

distance

 

costs.

 

When

 

callback

 

security

 

is

 

enabled,

 

all

 

callers

 

are

 

requested

 

to

 

enter

 

a

 

password.

 

If

 

a

 

valid

 

password

 

is

 

received,

 

the

 

modem

 

hangs

 

up

 

and

 

returns

 

the

 

call

 

by

 

dialing

 

a

 

phone

 

number

 

that

 

is

 

stored

 

with

 

the

 

password.

 

The

 

person

 

being

 

called

 

back

 

must

 

then

 

enter

 

the

 

password

 

a

 

second

 

time

 

to

 

establish

 

a

 

connection.

  

Up

 

to

 

30

 

callback

 

passwords

 

and

 

dialing

 

strings

 

can

 

be

 

stored

 

in

 

the

 

modem.

 

Each

 

dialing

 

string

 

can

 

be

 

up

 

to

 

34

 

or

 

35

 

characters

 

long

 

and

 

can

 

contain

 

commands

 

as

 

well

 

as

 

phone

 

numbers.

 

For

 

mobile

 

callers,

 

the

 

dialing

 

string

 

can

 

be

 

programmed

 

to

 

allow

 

the

 

caller

 

to

 

bypass

 

the

 

stored

 

callback

 

number

 

by

 

entering

 

a

 

temporary

 

callback

 

number,

 

to

 

enter

 

an

 

extension

 

at

 

the

 

callback

 

number,

 

or

 

to

 

make

 

a

 

direct

 

connection

 

without

 

callback.

  

For

 

local

 

security,

 

the

 

passwords

 

and

 

dialing

 

strings

 

that

 

are

 

stored

 

in

 

the

 

modem

 

are

 

protected

 

from

 

tampering

 

by

 

a

 

setup

 

password,

 

which

 

you

 

should

 

change

 

when

 

you

 

set

 

up

 

the

 

modem.

 

You

 

can

 

further

 

protect

 

the

 

modem

 

against

 

tampering

 

by

 

disabling

 

its

 

ability

 

to

 

respond

 

to

 

most

 

AT

 

commands.

 

To

 

check

 

for

 

attempted

 

break

ins,

 

you

 

can

 

request

 

the

 

modem

 

to

 

display

 

the

 

number

 

of

 

failed

 

password

 

attempts.

 

Your

 

modem

 

was

 

shipped

 

with

 

a

 

default

 

setup

 

password

 

(MTSMODEM).

 

The

 

same

 

password

 

is

 

used

 

for

 

both

 

callback

 

security

 

and

 

remote

 

configuration

 

(Chapter

 

4).

 

Because

 

anyone

 

who

 

has

 

access

 

to

 

this

 

guide

 

has

 

access

 

to

 

the

 

default

 

password,

 

you

 

should

 

change

 

the

 

password

 

during

 

your

 

initial

 

setup.

  

Changing

 

the

 

Setup

 

Password

 

1. 

Open

 

a

 

data

 

communications

 

program

 

such

 

as

 

HyperTerminal.

 

2. 

In

 

the

 

terminal

 

window,

 

type

 

AT#SMTSMODEM

 

(or

 

AT#S

xxxxxxxx

 

if

 

you

 

have

 

replaced

 

the

 

MTSMODEM

 

password

 

with

 

xxxxxxxx

).

 

Press

 

E

NTER

.

 

The

 

modem

 

responds

 

with

 

OK

 

if

 

the

 

setup

 

password

 

is

 

correct

 

and

 

ERROR

 

if

 

it

 

is

 

wrong.

 

3. 

To

 

change

 

the

 

password,

 

type

 

AT#S=

xxxxxxxx

,

 

where

 

xxxxxxxx

 

stands

 

for

 

the

 

password,

 

and

 

then

 

press

 

E

NTER

.

 

The

 

password

 

can

 

include

 

any

 

keyboard

 

character,

 

and

 

can

 

be

 

up

 

to

 

eight

 

characters

 

long.

 

The

 

modem

 

responds

 

with

 

OK

.

 

4. 

The

 

new

 

password

 

is

 

saved

 

automatically.

 

You

 

can

 

now

 

either

 

enter

 

more

 

AT

 

commands

 

or

 

exit

 

the

 

data

 

communications

 

program.

 

The

 

next

 

time

 

you

 

wish

 

to

 

set

 

up

 

the

 

modem,

 

you

 

must

 

use

 

the

 

new

 

password.

 

Note:

  

Passwords

 

are

 

case

sensitive.

  

Turning

 

Callback

 

Security

 

On

 

and

 

Off

 

Callback

 

security

 

must

 

be

 

turned

 

on

 

to

 

enter

 

many

 

callback

 

security

 

commands.

 

1. 

Open

 

a

 

data

 

communications

 

program

 

such

 

as

 

HyperTerminal.

 

2. 

In

 

the

 

terminal

 

window,

 

type

 

AT#S

xxxxxxxx

,

 

where

 

xxxxxxxx

 

is

 

your

 

password.

 

Press

 

E

NTER

.

 

The

 

modem

 

responds

 

with

 

OK

 

if

 

the

 

setup

 

password

 

is

 

correct

 

and

 

ERROR

 

if

 

it

 

is

 

wrong.

 

 

 

18

 

Multi

Tech

 

Systems,

 

Inc.

 

MT9234ZBA

Series

 

User

 

Guide

 

Содержание MT9234ZBA Series

Страница 1: ...MultiModem ZBA MT9234ZBA Series MT9234ZBA MT9234ZBA V User Guide...

Страница 2: ...vered by one or more of the following patents 6 031 867 6 012 113 6 009 082 5 905 794 5 864 560 5 815 567 5 815 503 5 812 534 5 809 068 5 790 532 5 764 628 5 764 627 5 754 589 5 724 356 5 673 268 5 67...

Страница 3: ...oice Option 11 Connect Speakers Voice Option 11 Connect the Modem to the AC Power Outlet 11 Power On Test 11 Installing the Modem Driver 11 Downloading and Installing the Modem Driver 11 Configuring t...

Страница 4: ...Your Parameters 30 Appendix B Regulatory Compliance 31 Appendix C Environmental Information 36 WEEE Waste Electrical and Electronic Equipment Statement 36 REACH Statement 36 Restriction of the Use of...

Страница 5: ...fax standard Error Correction Mode adds reliability while increasing performance of fax transmissions Together these enhancements increase the performance of the modem to levels previously only found...

Страница 6: ...hardware Intelligent Features Plug and play fully AT command compatible dialing options autoanswer adaptive answer EIA extended automode adaptive line probing automatic symbol and carrier frequency du...

Страница 7: ...CE Mark EMC FCC Part 15 Class B EN55024 EN55022 Class B ICES 003 Class B Safety UL cUL 60950 1 IEC 60950 1 AS NZS 60950 Telecom 47CFR Part 68 CS03 TBR21 other countries also included Dimensions 10 8...

Страница 8: ...k This product must be disconnected from the telephone network interface when servicing Changing the Internal Jumpers This step is required only if You intend to use the modem on a leased line You int...

Страница 9: ...round screw lug 7 Remove the top part of the modem case Location of the Jumpers Note The Speaker Mode jumper is for a modem with the voice option Changing the Dial Up Leased Line Jumper As shipped fro...

Страница 10: ...er s serial port the telephone line or leased line AC power and optionally your telephone Connections No Voice Connections With Voice Connecting the Modem to Your PC Plug one end of the serial cable i...

Страница 11: ...ot have a sound card you can plug an unamplified speaker directly into the SPKR jack Connect the Modem to the AC Power Outlet The power switch is located on the right side of the modem Make sure it is...

Страница 12: ...ust configure it to match the defaults of the country region in which you are using it You must also do this if you move the modem to another country region after it has been configured for the first...

Страница 13: ...rameters have been set click Finish to exit Using AT Commands to Configure Your Modem Non Windows users can configure the modem using AT commands You must enter these commands in your communication pr...

Страница 14: ...plying power to the modem Leased Line Operation The MultiModem ZBA modem can be used on a two wire leased line A leased line is a private permanent telephone connection between two points Unlike norma...

Страница 15: ...ISP near you look in a local directory or computer publication Your ISP should provide you with the following information User name also called user ID Password Access number the number you call to c...

Страница 16: ...uration by typing AT W0 and pressing ENTER 5 Type ATO and press ENTER to exit remote configuration You can now break the connection in the normal way Setup Multi Tech modems are shipped with a default...

Страница 17: ...tory default is 37 which is the ASCII code for the percent character Setting S9 to 0 zero disables remote configuration entirely CAUTION If you do this remotely you won t be able to change it back rem...

Страница 18: ...to display the number of failed password attempts Your modem was shipped with a default setup password MTSMODEM The same password is used for both callback security and remote configuration Chapter 4...

Страница 19: ...s password prompt and messages parity must match the parity of the computer to which the modem is connected 1 Open a data communications program such as HyperTerminal 2 In the terminal window type AT...

Страница 20: ...rack of password and phone number assignments Calling Procedures Use the following procedures to call a modem that has callback security enabled Note that Autoanswer must be enabled on the calling mod...

Страница 21: ...iate the call You are allowed three attempts to enter the password after which you will be disconnected 8 If the password is valid the following message appears and the modems establish a working conn...

Страница 22: ...l the number of the callback modem 2 When the connection is established the callback modem responds with the following message Password 3 Type a direct connection password press the key and then press...

Страница 23: ...Commands The AT Commands related to Callback Security are included in the AT Commands Reference guide You can download this guide from the Multi Tech website Callback Assignments Form Location Passwo...

Страница 24: ...rip is plugged in and its power switch is on Make sure the power supply is firmly connected to the modem and the power supply s power cord is firmly connected to both the power supply and the wall out...

Страница 25: ...ial port install the modem on it change the COM port setting in your software and try again The modem might have a problem beyond the scope of this user guide If you have another Multi Tech modem try...

Страница 26: ...o call you If you have Call Waiting service disable it before each call In most telephone areas in North America you can disable Call Waiting by preceding the telephone number with 70 but first check...

Страница 27: ...n online mode or the V command in command mode to display information about the last connection making a screen print of the connection statistics and checking for parameters that might be unacceptabl...

Страница 28: ...wnloaded 5 Document and clear your stored parameters 6 Upgrade the modem s firmware using the HEX file and the Flash Wizard 7 Restore your parameters Identifying the Modem Firmware You must know the m...

Страница 29: ...he file name The extracted files include a HEX file which contains the upgrade data and a Readme file 3 Copy the upgrade HEX file into the Flash Wizard folder which in a default installation is at C P...

Страница 30: ...le is used internally by Flash Wizard 4 The Progress dialog box appears showing a status bar that indicates the progress of the upgrade Caution Any disruption of the program during this stage of the u...

Страница 31: ...r modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment FCC Part 68 Telecom This equipment complies with Pa...

Страница 32: ...ximum number of terminals allowed to be connected to a telephone interface The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the...

Страница 33: ...aws of Member States relating to electrical equipment designed for use within certain voltage limits and Council Directive 1999 5 EC of 9 March 1999 on radio equipment and telecommunications terminal...

Страница 34: ...le or noise and may also cause a false answer condition Should such problems occur the user should not contact the Telecom Faults Service The preferred method of dialing is to use DTMF tones as this i...

Страница 35: ...Telecommunications Equipment MT9234ZBA JATE Approval A09 0125001 Brazil Special Cable for MT9234ZBA model only Attention A special phone cable is required for regulatory compliance Um cabo especial p...

Страница 36: ...t over to a designated collection point for the recycling of waste electrical and electronic equipment The separate collection and recycling of your waste equipment at the time of disposal will help t...

Страница 37: ...nd will be made available upon request Restriction of the Use of Hazardous Substances RoHS Multi Tech Systems Inc Certificate of Compliance 2002 95 EC Multi Tech Systems Inc confirms that this product...

Страница 38: ...CD CR6 PBB PBDE O O O O O O X O O O O O X O O O O O O O O O O O O O O O O O IC O O O O O O O O O O O O X O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O LED O O O O O O X O O O O...

Страница 39: ...Appendix C Environmental Information Multi Tech Systems Inc MT9234ZBA Series User Guide 39 Korea Class B Statement Equipment Residential Use B...

Страница 40: ...most commonly installed components of Red Hat 6 2 More information can be found in your Linux OS owner s manual Using the Terminal Program Minicom to Verify Operation 1 At the command prompt type min...

Страница 41: ...sted and then click Next 8 Click Finish Calling the ISP 1 On the Task Bar at the bottom of the screen select the Gnome Footprint 2 Select Internet from the menu 3 Select RH PPP Dialer 4 Select the con...

Страница 42: ...e 3 Press ENTER The modem responds with OK if the setup password is correct and ERROR if it is wrong The default password is MTSMODEM If you wish to change the password then type the command AT S xxxx...

Страница 43: ...one 5 Repeat as many times as necessary until all passwords have been entered 6 To review your entries a Type AT V b Press ENTER 7 To set the modem for direct connect mode a Type AT H1 b Press ENTER...

Страница 44: ...ommand Only commands such as ATI0 that request specific data from the modem send any data to the DTE as an indication that the modem has accepted the command Temporarily turning on command echo and re...

Страница 45: ...uration escape characters followed by AT and the setup password and then press ENTER Example ATMTSMODEM You have four tries to enter the correct password before being disconnected If the password is c...

Страница 46: ...24 G Garbage Characters 27 I Indicators 14 24 Installation and Setup 8 Internal Jumpers 11 International Modem Restrictions 33 J Jumpers 11 L Leased Line Operation 9 Leased Line Operation 14 LED Indi...

Страница 47: ...ulti Tech Systems Inc MT9234ZBA Series User Guide 47 U Upgrading the Modem s Firmware 28 Using Out of Band Management 42 W Waste Electrical and Electronic Equipment WEEE Statement 36 WEEE directive 36...

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