Multitech MultiAccess MA220 User manual

Multi Access
® ACS
Analog Communications Server
MA220
MA420
MA820
User Guide

2
MultiAccess ACS User Guide
MA220, MA420, MA820
PN S000404D Version D
Copyright
This publication may not be reproduced, in whole or in part, without prior expressed written permission
from Multi-Tech Systems, Inc. All rights reserved.
Copyright © 2006-7, by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and
specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.
Furthermore, Multi-Tech Systems, Inc. reserves the right to revise this publication and to make changes
from time to time in the content hereof without obligation of Multi-Tech Systems, Inc. to notify any person
or organization of such revisions or changes.
Revisions
Revision Level Date Description
A08/14/06 Initial release.
B09/26/06 Changed TCP port to 6000.
C 11/16/06 Major review.
D07/13/07 Manual revised to include software version 1.03 and added MA220
product.
Trademarks
Multi-Tech, MultiAccess, and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc..
Microsoft Windows XP is a trademark of Microsoft Corporation in the United States and/or other
countries. All other products or technologies are the trademarks or registered trademarks of their
respective holders.
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Technical Support
Country By Email By Phone
France: [e-mail] +(33) 1-64 61 09 81
Europe, Asia, Africa: [email protected]k +(44) 118 959 7774
U.S., Canada, all others: [email protected]m [phone] or [phone]
Internet Address: http://www.multitech.com

Table of Contents
Multi-Tech Systems, Inc. MultiAccess User Guide 3
Table of Contents
Chapter 1 – Product Description & Specifications..................................................................................5
Product Description...................................................................................................................................5
Key Features.............................................................................................................................................6
The MultiAccess package contains:..........................................................................................................6
Handling Precautions ................................................................................................................................6
LED Indicators...........................................................................................................................................7
Product Specifications...............................................................................................................................8
Chapter 2 – Installation...............................................................................................................................9
Safety Warnings........................................................................................................................................9
Safety Recommendations for Rack Instructions .......................................................................................9
Cabling Procedure - Back Panel.............................................................................................................10
Chapter 3 – Configuring Your MultiAccess............................................................................................12
Setting Admin PC to Startup IP Address.................................................................................................12
Logging In................................................................................................................................................12
Setting MultiAccess IP Addresses...........................................................................................................13
Resetting Admin PC to Its Original IP Address.......................................................................................13
Logging In Again......................................................................................................................................13
Time Configuration..................................................................................................................................14
Setting Up the Mail Server ......................................................................................................................13
Modem Configuration..............................................................................................................................14
Setting Authentication..............................................................................................................................16
Setting Up Local Users............................................................................................................................18
Chapter 4 – Software ................................................................................................................................20
Home Screen...........................................................................................................................................20
Login Screen ...........................................................................................................................................21
Call Log Screen.......................................................................................................................................22
Call Log ...................................................................................................................................................23
Call Details ..............................................................................................................................................23
Current Status Screen.............................................................................................................................24
Logout Option..........................................................................................................................................25
Administration Screen .............................................................................................................................26
Local Users Data Base Screen...............................................................................................................28
Modem Setup Screen..............................................................................................................................29
Authentication Screen .............................................................................................................................31
Chapter 5 – Troubleshooting...................................................................................................................33
Chapter 6: Warranty, Service, & Repair..................................................................................................35
Repair Procedures for U.S. and Canadian Customers...........................................................................35
Repair Procedures for International Customers (Outside U.S.A. and Canada)......................................35
Repair Procedures for International Distributors.....................................................................................36

Table of Contents
4 Multi-Tech Systems, Inc. MultiAccess User Guide
Replacement Parts..................................................................................................................................36
Appendix A – Device Manager Utility......................................................................................................37
Adding a Device to the Manager.............................................................................................................38
Set Local User Sharing............................................................................................................................39
Synchronize Phonebooks/Local Users....................................................................................................40
Updating Firmware..................................................................................................................................41
MultiAccess Modem Firmware Update....................................................................................................41
MultiAccess Firmware Update.................................................................................................................44
Appendix B – Regulatory Information ....................................................................................................47
47 CFR Part 68 Telecom.........................................................................................................................47
47 CFR Part 15 Regulation .....................................................................................................................48
Canadian Limitations Notice....................................................................................................................48
Industry Canada......................................................................................................................................49
Safety and EMC Product Approvals........................................................................................................49
Appendix C – Waste Electrical and Electronic Equipment (WEEE) Statement..................................50
Appendix D: C-ROHS HT/TS Substance Concentration............................................................................51
依照中国标准的有毒有害物质信息 ..........................................................................................................51
Appendix E – MCSI2000 Parameters.......................................................................................................52
Setting Up MCSI2000 Com Port Redirector............................................................................................52
Appendix F – Modem AT Commands .....................................................................................................53
AT Commands.........................................................................................................................................53
Escape AT Commands............................................................................................................................66
V.92 Commands......................................................................................................................................67
S-Registers..............................................................................................................................................72
Result Codes...........................................................................................................................................75
Appendix G - License Agreement ...........................................................................................................77
Multi-Tech Systems, Inc. End User License Agreement (EULA)............................................................77
Index...........................................................................................................................................................79

Chapter 1 – Product Description & Specifiication
Multi-Tech Systems, Inc. MultiAccess User Guide 5
Chapter 1 – Product Description &
Specifications
Product Description
The MultiAccessACS analog communication servers provide connectivity to the corporate LAN for
telecommuters and mobile users, or to remotely installed equipment, via integrated V.92/56K modems.
The MultiAccess ACS units described in this User Guide are the MA220 which is a 2-port unit; the MA420
which is a 4-port unit and the MA820which is an 8-port unit. All three units provide the same Remote
Access Server, RAS, and modem sharing capabilities except for the number of ports each unit can
provide. The MA420 and MA820 are provided in a desktop and rack mountable units where as the MA220
is provided in a desktop and wall mountable unit.
MultiAccess MA820
The MultiAccess ACS has two roles (usages), RAS and Modem Sharing.
RAS Solution: The MultiAccess can be used as a dial-in PPP Remote Access Server in a LAN to Client
environment. The purpose is to give remote nodes (i.e., Microsoft Dail-up Networking clients) TCP/IP
access to the same subnet and LAN the MultiAccess is installed on. Masquerading (NAT) and LAN to
LAN routing (assignment of an entire subnet) are IP networking techniques not supported by the
MultiAccess. The supported PPP security protocol (means of communicating user credentials between
PPP end points) is PAP only.
Modem Sharing Solution: The modems in the MultiAccess can be a shared resource on your network,
commonly referred to as a network modem pool. Computers with network access to the MultiAccess can
use Telnet and get direct AT command access to one of the modems in the MultiAccess, for either
outbound or inbound calls. A common way to take advantage of this role is by installing Com Port
Redirector Software (i.e., Multi-Tech’s MCSI2000 for Windows) on your workstations. The redirector adds
a virtual com port to the workstation and uses Telnet to map, redirect, the com port to a modem in the
MultiAccess. The redirector and Telnet session replaces the UART based hardware of a PC and serial
cable connection normally found in traditional modem installations. A communication program using this
virtual com port has its data redirected to and from the modem within the MultiAccess, making the modem
appear as if it is directly attached to a communication port on the workstation.
MCSI2000 Utility is provided on the MultiAccess CD and a summary of the parameters are presented in
Appendix E.
Modem AT Commands are presented in Appendix F.
For the latest revision of the MultiAccess User Documentation, refer to the Multi-Tech Systems, Inc. Web
site: http://www.multitech.com

Chapter 1 – Product Description & Specification
6 Multi-Tech Systems, Inc. MultiAccess User Guide
Key Features
•Integrated V.92/56K modems
•Supports dial-out for clients on IP networks
•Modems support V.92/56K dial-out and V.34/33.6K dial-in connections
•Client authentication provided through RADIUS®or local database
•Callback Security (local data base only)
•Connects to 10/100Base T Ethernet
•Industry-standard PPP client support
•Web server interface for system configuration and management
•Flash memory on modems and server for easy updates
•Two-year warranty
The MultiAccess package contains:
•One MultiAccess unit with factory-installed software
•One universal power supply with power cord
•Two rack mounting brackets and four mounting screws for the MA420 and MA820
Wall mounting for the MA220
•One power cord
•One Quick Start Guide
•One product CD
Handling Precautions
All devices must be handled with certain precautions to avoid damage due to the accumulation of static
charge. Although input protection circuitry has been incorporated into the devices to minimize the effect of
this static buildup, proper precautions should be taken to avoid exposure to electrostatic discharge during
handling and mounting.

Chapter 1 – Product Description & Specifiication
Multi-Tech Systems, Inc. MultiAccess User Guide 7
LED Indicators
MA420 Front Panel
MA820 Front Panel
MA220 Front Panel
LED Description
Power Lit when unit is on.
Status Future use. Description for Ethernet
LNK Link – Lit when network data connection is established. Flashes with
network activity.
100 Indicates the speed of the LAN Ethernet port.
Description for Modems 1 and 2 (MA220), Modems 1 thru 4 (MA420),
or Modems 1 thru 8 (MA820)
TD Transmit Data – Lit when data from the LAN is transmitted to the analog
line.
RD Receive Data – Lit when data recovevered from the analog line is sent to
the LAN.
TR Terminal Ready – Lit when the operating system detects and initializes
the modem.
CD Carrier Detect – Lit when a valid carrier signal is detected.

Chapter 1 – Product Description & Specification
8 Multi-Tech Systems, Inc. MultiAccess User Guide
Product Specifications
Category Description
Ethernet RJ48 connector Interface: 10BaseT/100BaseT (UPT)
Format: Ethernet 802.3, 802.2, Ethernet II or SNAP
Command port Serial port with RJ45/RS232 connector - 115200bps, 8,N,1,No Flow
Control
RJ11 Two, Four, or eight analog modems
Data Compatibility V.92/V.90/56K, V.34/33.6, V.32bis/14.4K, V.22bis/2400 baud, V.22,
V.23 & V.21; Bell 212A & Bell 103
Standards Data: V.92, V.90, enhanced V.34 & below
Error Correction: V.44, v.42LAPM, MNP2-4
Data Compression: MNP®Class 5; V.42bis
Voice Compatibility TAM (Telephone Answering Machine)
System Management Web based - HTTP
Security Local database or RADIUS support
Input Power 100 – 240Vac 1.2 – 0.6A 50/60Hz
Power Usage MA420/820 Typical – 1.6W (175mA @ 9VDC)
Maximum – 2.2W (225mA @ 9.9VDC)
MA220 Typical – 4.05W (0.45A @ 9V)
Maximum – 5.31W ((0.590A @ 9V)
Power 7W @ 5v typical (1.43A@5v) 10W @5v Max (2A@5v)
Operating Temperature 32°to +120°F (0°to 50°C); humidity range 20-90% (non-condensing)
Storage Temperature -10°C to +85°C
Physical Dimensions
MA420/820 17.3125" w x 1.75" h x 8.375" d; 7 lbs
11 cm x 6.1 cm x 2.4 cm; 3.5K g
MA220 6.4” w x 5.6” d x 1.2”h; 20.5Oz
16.3cm x 42.2cm x 3.0cm; 750g
Approvals Safety Certifications
UL1950
cUL60950
CSA950
AS3260
CCC
Safety Certifications for HV Builds
EN60601
EMC Approvals
FCC Part 15 (Class A), Canada (Class A)
Canadian EMC
EN 55022: 1998 Class A
EN 55024: 1998

Chapter 2 – Installation
Multi-Tech Systems, Inc. MultiAccess User Guide 9
Chapter 2 – Installation
The MultiAccess model MA220 is designed to install either on a desktop or a flat surface. The mounting
of the MA220 is defined in the MA220 Mechanical Mounting (Optional) section in this chapter.
The MultiAccess models MA420 and MA820 are designed to install either on a desktop or in a standard
EIA 19“ rack, and is shipped with the mounting hardware to install the MultiAccess in the rack. If installing
in a rack, use the provided mounting hardware and follow the rack enclosure manufacturer’s instructions
to safely and securely mount the MultiAccess in the rack enclosure. Proceed to the cabling procedure.
Safety Warnings
•Use this product only with UL- and CUL-listed computers.
•Never install phone wiring during a lightning storm.
•Never install a phone jack in a wet location unless the jack is specifically designed for wet locations.
•Never touch uninsulated phone wires or terminals unless the phone line has been disconnected at the
network interface.
•Use caution when installing or modifying phone lines.
•Avoid using a phone during an electrical storm; there is a risk of electrical shock from lightning.
•Do not use a phone in the vicinity of a gas leak.
•To reduce the risk of fire, use only 26 AWG or larger telephone line cord.
•Disconnect this product from its power supply and telephone network interface when servicing.
Caution: Danger of explosion if battery is incorrectly replaced. A lithium battery on the MultiAccess PC
board provides backup power for the time-keeping capability. The battery has an estimated life
expectancy of ten years. Contact Multi-Tech if you suspect a failed battery. If data and time are incorrect
after having the unit powered off, it may be due to a weak battery or incorrect setup.
Caution: The Ethernet ports are not designed to be connected to a Public Telecommunication Network.
Safety Recommendations for Rack Instructions
•Ensure proper installation of the MultiAccess in a closed or multi-unit enclosure by following the
recommended installation as defined by the enclosure manufacturer. Do not place the MultiAccess
directly on top of other equipment or place other equipment directly on top of the MultiAccess.
•When mounting the euipment in a rack, make sure mechanical loading is even to avoid a hazardous
condition, such as loading heavy equipment in the rack unevenly. The rack should safely support the
combined weight of all equipment it supports.
•If installing the MultiAccess in a closed or multi-unit enclosure, ensure adequate airflow within the rack
so that the maximum recommended ambient temperature is not exceeded.
•Ensure that the MultiAccess is properly connected to earth ground via a grounded power cord. If a
power strip is used, ensure that the power strip provides adequate grounding of the attached
apparatus.
•Ensure that the mains supply circuit is capable of handling the load of the MultiAccess. Refer to the
power label on the equipment for load requirements.
•Maximum ambient temperature for the MultiAccess is 60 degrees Celsius (140°F).
•This equipment should only be installed by properly qualified service personnel.
•Only connect like circuits. In other words, connect SELV (Secondary Extra Low Voltage) circuits to
SELV circuits and TN (Telecommunications Network) circuits to TN circuits.

Chapter 2 – Installation
10 Multi-Tech Systems, Inc. MultiAccess User Guide
Mechanical Mounting (Optional)
The MA220 comes with chassis screw holes to facilitate attaching it to a flat surface.
Version 2
Version 1

Chapter 2 – Installation
Multi-Tech Systems, Inc. MultiAccess User Guide 11
Cabling Procedure - Back Panel
Cabling your MultiAccess involves making the proper power, phone, and ethernet connections as
described and illustrated below.
The MultiAccess MA420 and MA820 back panels have a fan, a power plug, POWER Switch (| / O), four
or eight RJ-11 phone jacks, an Ethernet jack, and a Command jack. The MA220 back panel has two
LINE RJ-11 phone jacks, an Ethernet, LAN 1, and a CONSOLE jack.
Back Panel - MA420
Back Panel – MA220
1. Plug one end of your RJ45 Ethernet cable into the Ethernet (MA420 & MA820) or LAN 1 (MA220)
jack on the back of the MultiAccess and the other end to the hub on your local network.
Caution: Before connecting to the Ethernet network, make sure that the network to which you are
connecting the MultiAccess is not a 192.168.2.x subnet. Because the MultiAccess’s factory default IP
address is 192.168.2.1, connecting it to a network that has a different device at the same IP address
would cause data interference.
If it is a 192.168.2.x subnet, connect from the Administrative PC to the MultiAccess using an RJ45
crossover cable until the MultiAccess’s IP address has been configured. Afterwards, connect the
MultiAccess into the network with an ordinary RJ45 cable.
2. Using a standard telephone cable, connect one end of the cable to the first RJ11 jack (1 or Line 1) on
the back of the MultiAccess and the other end to one of your phone jacks.
3. Continue to connect standard telephone cables to the remaining RJ11 jacks on the back of the
MultiAccess.
4 The Command or CONSOLE jack is only to be used with direction from Multi-Tech’s Technical
Support Personnel.
5. For the MA420 and MA820, ensure that the MultiAccess is securely and permanently connected to an
earth ground (GND) with a ground wire of 18 gauge (18 AWG) or thicker. The ground wire needs to
be installed between the grounding screw on the MultiAccess and a permanent earth ground.
Whether the MultiAccess is used in a rack or desktop, you must verify that the earth ground
connection is permanent and reliable. In order for the earth ground to be considered permanent, the
grounding wire must connect to the earth ground of the building’s electrical wiring system and the
ground connection must use a screw terminal or other reliable means of fastening. The ground
connection must not be as easily disconnected as, for example, a power cord.
6. On the MA220 unit, secure the power lead from the power source and then connect the power source
to a live power outlet.
On the MA420 and MA820 units, with the Power switch in the off (Ο) position and using the supplied
power cord, connect the MultiAccess power plug to a live power outlet.
7. Place the MultiAccess Power switch to the on (|) position for the MA420 and MA820 to turn on the
MultiAccess.
8. Proceed to Configuring Your MultiAccess.

Chapter 3 – Configure your MultiAccess
12 Multi-Tech Systems, Inc. MultiAccess User Guide
Chapter 3 – Configuring Your
MultiAccess
Setting Admin PC to Startup IP Address
1. Connect a PC to your network. Record the PC’s current IP address before you change it.
2. Set the PC IP address to 192.168.2.x subnet (using any address excluding 192.168.2.1).
Logging In
1. Bring up a Web browser on your PC. At the browser’s address line, type the default address of the
MultiAccess: http://192.168.2.1 and press Enter.
2. The Login screen will appear.
At this point you can be assured that the MultiAccess is connected to the network.
If the Login screen does not appear, see item #1, “What if I can’t see the web page for my
MultiAccess?” in Chapter 5: Troubleshooting.
3. At the Login screen, enter admin (all lower case) in the Username field.
4. Enter admin (all lower case) in the Password field.
5. Click the Login button. The Home screen will appear. From this screen, you can access all of the
MultiAccess software screens.

Chapter 3 – Configure your MultiAccess
Multi-Tech Systems, Inc. MultiAccess User Guide 13
Setting MultiAccess IP Addresses
1. In the MultiAccess Administration screen, go to the IP Configuration fields.
2. Fill in the IP information that applies to your MultiAccess unit. The fields for “IP Address,” “Subnet
Mask,” “Default Gateway” and “Name Server” are required. A “Secondary Name Server” is optional.
3. Click Update. After the Update button has been clicked, it takes 5 seconds for the page to update.
Resetting Admin PC to Its Original IP Address
In Setting the Admin PC to the network number of the MultiAccess, you recorded the original IP address
of the administrator’s PC and then reset it to the IP address required to allow communication with the
MultiAccess unit. You may now set the IP address of the administrator’s PC back to its original value or
to any other value that will allow you to communicate with the MultiAccess at its new IP address.
Logging In Again
Having reset the IP address of the administrator’s PC, you must log into the MultiAccess software again
with the new IP address. Go to the Login screen, enter admin as User Name and admin as Password.
Setting Up the Mail Server
1. From the Administration screen, go to the SMTP Configuration fields.
1. Enter the mail server address in the SMTP Server Address window (e.g., mail.multitech.com or IP
address).
2. The default SMTP Port number is 25.
3. Enter the E-mail address of the administrator in the Administrator E-mail window.
4. If the SMTP Server requires an User ID, enter the ID in the SMTP Server User ID window.
5. If the SMTP Server requires a password, enter the password in the SMTP Password window.
6. If you enter a password, retype the identical password in the Retype SMTP Password window.
Click on Update. At this point the MultiAccess will send the Administrator an email saying that the mail
server address has been updated.

Chapter 3 – Configure your MultiAccess
14 Multi-Tech Systems, Inc. MultiAccess User Guide
Time Configuration
1. In the MultiAccess Administration screen, go to the Time Configuration fields.
2. In the Time Server window, select from the three time server URLs. The default is time.nist.gov. The
Time Server is a substitute for a real-time clock in the MultiAccess.
If you would like to add your own time server, you can enter the URL or IP address of your time
server in the Add Time Server window.
3. In the Request Interval window, select the Days, Hours, and Minutes that the MultiAccess will
update its clock from the time server.
4. If you are in daylight savings time, check the Use Daylight Savings Time (DST) box.
5. In the Time Zone, Date Format, and Time Format windows, choose the options for your time zone.
6. Click the update button to change to your new parameters.
Modem Configuration
There are two primary ways to use the modems; RAS and Modem Sharing. Prior to software release
version 1.03, the ports were configured for either RAS or modem sharing, for which they were then
dedicated to just that role. Now, with software release version 1.03, both roles are automatically enabled,
alleviating the need for administrator intervention when either role is desired.
The Modem Configuration fields allow you to define the parameters per port. The number of ports shown
depends on the specific model of MultiAccess, POTS modem 1 and 2 for the MA220, POTS modem 1
thru 4 if the model is the MA420 or POTS modem 1 thru 8 if the model is the MA820.
The TCP port, socket, number used by Telnet to access the modem is dependent on how the Modem
Sharing Pool option is used. If this option is set to “pool”, port 6000 is used. All POTS modem ports set to
pool, 6000, must have the same exact Modem Sharing option, with or without authentication, etc. When a
Telnet client on the LAN opens a connection to 6000, it is given the lowest number POTS modem port
that is not in use.
If the Modem Sharing Pool option is set to “non-pool”, then a specific 7000+ number is sequentially
associated to each POTS modem, POTS modem 1 is assigned 7000, POTS modem 2 is assigned 7001
and so on incrementally through POTS modem 8 with 7007 for a MA820 unit.
Modem Sharing with authentication means a login prompt will be issued to the socket when it is opened.
Who (what) ever opened the socket must provide appropriate credentials before access is given to the
modem. When access is granted to the modem, an “OK” response message will be issued.
When Modem Sharing with Radius Authentication is selected, the Radius server that will be used is
defined in the Authentication menu.
When Modem Sharing with Local Authentication is selected, credentials (users) shown in the Local Users
menu are to be used.
When Modem Sharing with RAW is selected – support for RFC 2217 (com port control via Telnet) will be
disabled.

Chapter 3 – Configure your MultiAccess
Multi-Tech Systems, Inc. MultiAccess User Guide 15
1. Select the desired Modem Sharing option by clicking on the down arrow and highlighting your
authentication.
No Authentication. Immediate access is given to the modem.
Local Authentication. A valid set of credentials, defined in the Local User data base, is required
before access is granted.
Radius Authentication. A valid set of credentials, defined in the Radius User data base, is
required before access is granted. The Radius Server is defied in the Authentication menu.
Raw Mode with No Authentication. User data is treated “as is”, without interpretation, and no
authentication is required.
Raw Mode with Local Authentication. User data is treated “as is”, without interpretation, and a
valid set of credentials, defined in the Local User data base, is required before access is granted.
Raw Mode with Radius Authentication. User data is treated “as is”, without interpretation, and
a set of credentials, defined in the Radius User data base, is required before access is granted.
2. If Modem Sharing Pool is set to pool, port 6000 is used. All POTS modem ports set for pool
must have the same exact Modem Sharing option.
If Modem Sharing Pool is set to non-pool, port 7000 is assigned to the POTS modem 1 port.
3. Select your Country Code by clicking on the down arrow and choose your country/region.
4. If the modem is being used for in-bound calls, select the number of ring(s) for auto answer.
5. If calls are in-bound, click the on option for the Caller ID.
6. Click Update.
7. Repeat the above procedure for each POTS modem 2 on the MA220, POTS modems 2 thru 4 on
the MA420 or POTS modems 2 thru 8 for the MA820.

Chapter 3 – Configure your MultiAccess
16 Multi-Tech Systems, Inc. MultiAccess User Guide
Setting Authentication
The Authentication menu displays two ports for the MA220, four ports for the model MA420 or eight ports
for the model MA820. The Authentication/Radius Client Configuration:POTS modem X fields allow
you to select and define certain user authentication details on a per port basis.
The Authentication Type option, on this menu, applies only to RAS, PPP, calls.
Please Note: When Modem Sharing, in Modem Setup, is configured to implement Radius Authentication
it will use the RADIUS Client details defined here to authenticate the user, regardless of how the
Authentication Type option on this menu is set.
When the authentication method is local, use the Local User menu to build a Database of user
credentials. The MultiAccess matches the credentials provided by the caller with the credentials listed in
the Local User Database. Additionally, local users can be configured for PPP call back.
When the Authentication Type is Radius, the MultiAccess sends the credentials provided by the caller to
the Radius Server for authorization.
For RAS calls, dial-in PPP, a second static IP address is needed in the Remote Host Address field. This
address is for the dial-in user, PPP peer. This address needs to be on the same subnet, network number,
as that of the MultiAccess.
When the authentication method is Radius, then the IP address and UDP port of the Radius Server and
Radius Accounting Server have to be entered and the Secret has to be entered.
Radius accounting begins after successful Radius authentication. Radius accounting summarizes the
time and date, duration, POTS port connected and the IP address given to the user for the call. Radius
accounting does not track the amount or type of data of the session or the places the user communicates
with.
The Secret is an MD5 encryption key used by both the Radius Server and Radius Client, MultiAccess. It
must be the same alphanumeric string, including case that is defined in the Radius Sever.

Chapter 3 – Configure your MultiAccess
Multi-Tech Systems, Inc. MultiAccess User Guide 17
Authentication / Radius Client Configuration: POTS modem x
1. In the Authentication Type, if your database for user credentials resides in the Local User
Database on the MultiAccess, then accept the default – local.
If your user database resides on a Radius Server, then click on the down arrow and choose
radius.
2. For RAS calls, enter an available IP address from your existing network scheme in the Remote
Host Address window which will be assigned to the dial-in user. This Remote Host Address has
to match the network number of the MultiAccess.
3. If you are setting up MultiAccess to use Radius authentication, then enter the IP address of the
RADIUS Server in the RADIUS Server Address window.
4. Enter the port number (usually port 1812) for the RADIUS Server in the top Port window. The
Radius Server has to be listening on the same UDP port that the Radius Client, MultiAccess, is
using.
5. Enter the IP address of the RADIUS Accounting server in the RADIUS Accounting Address
window.
6. Enter the port number (usually port 1813) for the RADIUS Accounting server in the bottom Port
window. The Radius Accounting Server has to be listening on the same UDP port that the Radius
Client, MultiAccess, is using.
7. Enter the Secret of the RADIUS Server that you are communicating with. The Secret has to be
identical to the one used by your RADIUS Server and is limited to 14 alphanumeric characters.
8. Click on the Update button to save your port configuration.
9. Repeat the above procedure for POTS mdoem 2 on the MA220, POTS modems 2 thru 4 for the
MA420, or if MA820 for POTS modems 2 thru 8.

Chapter 3 – Configure your MultiAccess
18 Multi-Tech Systems, Inc. MultiAccess User Guide
Setting Up Local Users
The administrator builds the Local Users data base by defining the Name field, recording the User ID,
Password entries, and callback method. The administrator account has both administration of the
MultiAccess and dial-in rights and dial-out rights. The local user accounts have dial-in and dial-out rights.
Remote users enter their user ID and password at the beginning of the dial-in session.
For Local Authentication, go to the Local Users screen.
Note: The first row is for the “Administrator” function. No matter what values are used for the
Name, User ID and Password fields, the first row will still apply to the person doing the
Administrator function for the MultiAccess. The Administrator is the party privileged to
configure the MultiAccess.
Note: Callback Security can be implemented in two ways: 1) a fixed telephone number by choosing
Admin specific in the Callback window. 2) A variable telephone number by choosing User specified in
the Callback window.
Administator Row:
1. In the “Administrator” row of the Local Users screen, enter the Name and User ID to be used for
the MultiAccess administrator (it need not be literally “Administrator”).
2. In the Password window, enter an alphanumeric password. Passwords can be as long as 21
characters and are case-sensitive.
3. In the Confirm Password window, enter the identical alphanumeric password.
4. If the administrator is going to use the Callback Security option, click on the Callback down arrow
and choose the callback method. The fixed phone number is Admin specified or variable phone
number is User specified.
If the Callback Security option is enabled and Admin specified is selected, then enter your
fixed callback telephone number in the Callback Number window.
If the Callback Security is enabled and User Specified is selected, you do not enter a
telephone number in the Callback Number window. You enter the callback telephone number
during the dial-in process.
5. Click on Update in the “Administrator” row. At this point, a Login screen will appear and you will
be asked to log in again. Log in using the administrator’s User ID (as listed in the “User ID”
column) and the administrator’s current password.
Caution: If you change the admin password, you must be sure you remember your new
password.
Users Row:
1. In the first blank row, enter the Name and User ID of your local user.
2. In the Password window, enter an alphanumeric password. Passwords can be as long as 21
characters and are case-sensitive.
3. In the Confirm Password window, enter the identical alphanumeric password.
4. If you are going to enable the Callback Security option for a remote user, click on the Callback
down arrow and choose the callback method. A fixed phone number is Admin specified or
variable phone number is User specified.
For example of a user specified, if a traveling sales person needs to be called back at their
current location, they will provide the callback telephone number during the dial-in process. You
do not enter a telephone number in the Callback Number window.

Chapter 3 – Configure your MultiAccess
Multi-Tech Systems, Inc. MultiAccess User Guide 19
If the Callback Security option is enabled and Admin specified is selected, then enter their
fixed callback telephone number in the Callback Numer window.
5. Click the add button to include this local user in the data base.
6. Repeat the Local User Row steps for each local user you want to add to your local user data
base.

Chapter 4 – Software
20 Multi-Tech Systems, Inc. MultiAccess User Guide
Chapter 4 – Software
In this chapter, we present the screens of the MultiAccess software. We describe each field in each
screen and some of the command buttons. (We do not describe command buttons that have functions
that would be readily understood by users of Windows software. Examples of such self-evident functions
include buttons like “OK,” “Cancel,” “Next,” etc.)
Home Screen
The MultiAccess Home screen offers access to all other MultiAccess software screens.