3Com OfficeConnect 3C886A Instruction Manual

Part No. 1-024-2302
Published November 1999
O
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Introduction This release note describes the following enhancements made to the
OfficeConnect 56K LAN Modem as part of this latest firmware release.
■ Enhanced Dial-in Support
■
Service Provider Callback Feature
■
Upgrade Check Feature
■ Local DNS Table
■
LAN Modem Desktop Manager (Windows 95/98/NT)
■
Virtual Fax Modem (Windows 95/98 and NT 4.0)
■ Miscellaneous Enhancements
Enhanced Dial-in
Support
Previously, the LAN Modem provided limited dial-in capability, such as for
accessing a remotely located LAN Modem for remote configuration or to check
statistics. Now, Dial-in support has been enhanced to extend access to
workstations or servers located behind a remote LAN Modem.
Dial-in Applications The following dial-in scenarios are supported by the LAN Modem.
■ Single User Dial-in
■
LAN Modem Site-to-Site Dial-in
■
Advanced Dial-in
For more detailed descriptions of these scenarios, refer to “Understanding the
Three Dial-in Scenarios” later in this release note.
Dial-In
Wizard
Profile Name Network Scenario
Single User Single analog modem calls into a LAN Modem.
Public telephone
network
ALERT
LANSTATUS
POWERB1B2TX1234
COLL
ISDN
OK
ISDNLANModem
3C892
Small office LAN
OfficeConnect
56K LAN Modem
Telephone line
Analog modem
Telecommuter
PWR TEST D B1 B2 SD RD DTR
3Com
Impact IQ
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3Com

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Single User Single user on a router (such as a LAN Modem) calls into a LAN Modem.
LAN Modem
Site to Site LAN Modem to LAN Modem
Advanced Router other than a LAN Modem calls into a LAN Modem
Dial-In
Wizard
Profile Name Network Scenario
Public telephone
network
ALERT
LANSTATUS
POWERB1B2TX1234
COLL
ISDN
OK
ISDNLANModem
3C892
Small office LAN
OfficeConnect
56K LAN Modem
Telephone line
Router running NAT
Home office with multiple users
Public telephone
network
Small office LAN Small office LAN
OfficeConnect
56K LAN Modem
Telephone line
OfficeConnect
56K LAN Modem
Public telephone
network
Telephone line
Small office LAN
OfficeConnect
56K LAN Modem
Office LAN
Router (other than
LAN Modem)

Moreconnected
3Com
StatusReset
TX
D
D
12
1
2
4
31/23/434
RX
TX
LK
RX
LAN
RemoteAccessSystem1500
WAN
CO
Power
BRIISDNU
ANALOG
SLOT1SLOT2
STACKNET
CONSOLE
SUPER
STACK
3Com
Status
Reset
TX
D
D
12
1
2
4
31/2 3/4 34
RX
TX
LK
RX
LAN
RemoteAccess System 1500
WAN
CO
Power
BRIISDNU
SLOT1 SLOT2
STACKNET
CONSOLE
SUPER
STACK
3Com

Configuring Dial-In 3
Configuring Dial-In There are three main steps for configuring dial-in support.
1 Change remote administration password
2 Create dial-in user profile on server or central LAN Modem
3 Create service provider profile on client or remote site
Before you Begin Before you begin configuration, please note the following:
■ Any remotely-located device you wish to access on the remote LAN Modem
must be running appropriate software, such as a Web or FTP server.
Examples of server software are Apple’s Personal Web Sharing for the
Macintosh or Microsoft’s Peer Web Services for Windows 95/98. Check with
your computer’s accompanying documentation for more information
.
■
A LAN Modem can only accept dial-in calls from a device that matches its own
call type.
For instance, a 56K LAN Modem will only accept dial-in calls from another 56K
LAN Modem, or another analog modem or router. Calls from an ISDN LAN
Modem or other ISDN terminal adapters are not permitted for dial-in access.
Changing the Remote
Administration
Password
Previously, when dialing into a LAN Modem to configure it remotely or check
statistics, you were prompted to enter the password associated with the LAN
Modem’s configuration parameters. Additional security has now been added
which requires a unique user name and password for remote access. This is
referred to as the Remote Admin account and is reserved for remote configuration
only. This account does not provide dial-in access to LAN or WAN resources other
than the LAN Modem configuration parameters themselves. By default the user
name is
Admin and the password is 1234 . Note that the username and password
is case sensitive.
To change the default username and password (recommended), do the following.
1 Click the Dial-in button located on the LAN Modem’s mainpage.
The Dial-in Configuration submenu opens.
2 Click the Dial-in Users button.
The Dial-in User Selection screen opens.
3 Select Admin and then click Next .
4 In the Username field, delete the default name and then enter a new name.
5 In the Password field, delete the default password and then enter a new
password.

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Configuring the
Server LAN Modem
Configuring the server LAN Modem for Dial-in access requires two main steps:
■
Configure global dial-in parameters
■ Create a dial-in user profile for each dial-in connection account
Configuring global
dial-in parameters
Dial-in Global parameters, described below, allow you to designate a Callback
prefix, set the site number for LAN-to-LAN dial-in, and set authentication
preferences to be used for all dial-in users.
1 From the LAN Modem’s main configuration page, click Dial-In .
Figure 1 LAN Modem Main Configuration Page

Configuring the Server LAN Modem 5
2 Click Dial-in Global .
Figure 2 Dial-In Global Parameters Screen
1 If you are planning to use the Callback feature, use the Callback Prefix field to
enter the number required to get an outside line, such as a 9. Otherwise, leave this
field blank.
2 In the LAN to LAN Site Number, designate the LAN Modem site for dial-in access
from other LAN Modems which will employ the LAN Modem Site-to-Site scenario.
Note that setting the site number may change the IP address of the LAN Modem,
as described below.
■
Choose None (the default) to leave the LAN Modem’s IP address unchanged.
You might choose
None if you will never employ the LAN Modem Site-to-Site
scenario with this LAN Modem (that is, all your dial-in users will employ the
Single-User Dial-in scenario, and do not require LAN-to-LAN connectivity), or
an advanced user might choose
None if the IP address of the LAN Modem has
been manually configured for static IP addressing.
■
Choose Site A to designate this LAN Modem’s IP address as 192.168.1.1 (the
LAN Modem default IP address).
■
Choose Site B if this LAN Modem will place or receive calls to another LAN
Modem which has been configured as Site A. Choosing
Site B will change this
LAN Modem’s default IP address to 192.168.2.1
For example, if you have already designated a remote LAN Modem as
Site A, and you are now setting up a second LAN Modem for LAN-to-LAN
connectivity, you would designate this second LAN Modem as Site B. This
will differentiate between the two LAN Modem IP addresses, which by
default are the same.

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■
Choose Site C if this LAN Modem will place or receive calls to another LAN
Modem previously configured as Site A or Site B. Choosing
Site C will change
this LAN Modem’s default IP address to 192.168.3.1
3 In the Auto Answer field, choose the number of rings to wait before the LAN
Modem automatically answers dial-in calls. By default Auto Answer is set to
Disable, which routes all incoming calls directly to any analog equipment attached
to the LAN Modem phone port. Note that Auto Answer must be set to
1 or
greater if you wish to allow dial-in access to the LAN Modem.
4 In the PPP Authentication field, choose the type of PPP authentication you want
the LAN Modem to use when negotiating dial-in access. Note that at least one
must authentication type must be enabled. By default, PAP, CHAP and MS-CHAP
are enabled. This means that if the client side can do any of the three,
authentication will be successful.
5 Click Submit to save changes.
If you chose Site B or Site C as the LAN to LAN Site Number, the LAN Modem will
re-initialize as its IP address is reset. The front panel LEDs flash, indicating a reset in
progress.
Once the LAN Modem’s IP address has been changed, you can no longer access
the LAN Modem until your workstation has been restarted and has acquired an IP
address belonging to the new LAN Modem subnet.
Create a Dial-In User
Profile Using the Dial-In
Wizard
Before dialing into a LAN Modem, a dial-in user account profile must be created
for every user or site that requires access. To create a dial-in user profile on the
central or server site using the Dial-In Wizard, refer to the appropriate application
below for specific Dial-In Wizard instructions. For more detailed descriptions of
these scenarios, refer to “Understanding the Three Dial-in Scenarios” later in this
release note.
■Single User dial-in (analog modem or an analog router, such as a LAN Modem,
running NAT)
■LAN Modem Site-to-Site dial-in (LAN-to-LAN bidirectional connectivity)
■Advanced dial-in (unknown router dialing into a LAN Modem)
Single User Dial-In Wizard Instructions
1From the LAN Modem main configuration page, click Dial-in.
2Click Dial-in Wizard.
The Dial-in Wizard screen opens, as shown in Figure 3.

Configuring the Server LAN Modem 7
Figure 3 Dial-In Wizard Profile Type Selection Page

8OFFICECONNECT 56K LAN MODEM RELEASE NOTE V. 7.2.0
3Select Single User and click Next.
The Username and Password page appears, as shown in Figure 4.
Figure 4 Dial-In WIzard Username and Password Screen
4Enter a unique name and password to identify and verify this dial-in user when
dialing into this LAN Modem. Note that this will match the username and
password configured on the client device which dials in to this LAN Modem.
5Click Next.
The Congratulations page opens, indicating the successful creation of a dial-in
user.
6Click Continue.
This completes the dial-in configuration for single user. To continue setting up your
LAN Modem for dial-in access, go on to “Configuring the Client Site”.
LAN Modem Site-to-Site Dial-In Wizard Instructions
1From the LAN Modem main configuration page, click Dial-in.
2Click Dial-in Wizard.
3Select LAN Modem Site-to-Site and then click Next.
The Username and Password page appears.
4Enter a unique name and password to identify and verify this dial-in user when
dialing into this LAN Modem. This will match the username and password which
will be entered in the client LAN Modem’s service provider profile.
5Click Next.

Configuring the Client Site 9
6Specify the site name you would like to designate for this dial-in user’s remote LAN
Modem, A, B or C. Note that this site name must be different from the site name
designated in this LAN Modem’s Dial-In Global Parameters, in order to distinguish
between the two networks. The site name specified here will match the site name
configured in the client LAN Modem’s Dial-in Global Parameters.
7Click Next.
The Congratulations page opens, indicating the successful creation of a dial-in
user.
8Click Continue.
This completes the dial-in configuration for LAN Modem Site-to-Site dial-in. To
continue setting up your LAN Modem for dial-in access, go on to “Configuring the
Client Site”.
Advanced Dial-In Wizard Instructions
1From the LAN Modem main configuration page, click Dial-in.
2Click Dial-in Wizard.
3Select Advanced and then click Next.
The Username and Password page appears.
4Enter a unique name and password to identify and verify this dial-in user when
dialing into this LAN Modem.
5Click Next.
The dial-in user parameters page appears, allowing you to manually configure the
Advanced dial-in user parameters. For further configuration instructions refer to
“Dial-in Users Parameters Screen”.
Configuring the Client
Site To configure a dial-in user profile on the client site refer to the appropriate section:
■Configuring the client site for a single modem
■Configuring the client site for a LAN Modem
Configuring the Client
Site for a Single Modem
If the client dialing into the LAN Modem will be a single modem, use the
appropriate software such as Dial-Up Networking for Windows to create a
connection to the LAN Modem. The basic steps for creating a Dial-Up Networking
connection are as follows.
■Create a Dial-Up Network entry
■Enter the telephone number of the remote LAN Modem
■Enter the username and password

10 OFFICECONNECT 56K LAN MODEM RELEASE NOTE V. 7.2.0
Configuring the Client
Site for a LAN Modem
If the client dialing into the LAN Modem is another LAN Modem, you must
configure a new service provider profile on the client LAN Modem which will dial
into the remote LAN Modem. You then use this service provider to place
automatic or manual calls to the server LAN Modem as needed.
When using a client LAN Modem to dial into another LAN Modem via the
Single-User dial-in scenario, you must manually change the IP address of the client
LAN Modem in order to distinguish between the two networks. Refer to
“Changing the IP address on the LAN Modem” for instructions.
Configure a Service
Provider for this Dial-In
Connection
Configure a service provider for this connection as follows.
Before You Begin
You will need the following information.
■Telephone number of the server LAN Modem
■User ID and password of the Dial-in user
■IP address/subnet mask of the server LAN Modem
Additionally, if you would like to use the Callback feature, you will need the
following information:
■Callback telephone number
■Callback username and password
Setting Up a Connection
to a Server LAN Modem
To set up a connection on a client LAN Modem to dial into a server LAN Modem,
do the following.
1From the client LAN Modem’s main page, click the Service Providers icon.
The Service Provider Selection screen opens.
2Choose New (Private Network) from the drop-down menu and click Select.
The Private Network Parameters screen opens.
If you already have four Service Providers configured on your LAN Modem, one
must be deleted before a new Private Network can be created.
3In the Name field, enter a name for this service provider, such as the location of
the server LAN Modem.
4In the Dial Out Prefix field, enter the number required by your location to reach an
outside line, if necessary.
5In the Call Waiting Disable Command field, enter the appropriate command to
disable call waiting.
6In the Telephone Number field, enter the telephone number of the server LAN
Modem.
7In the Alternate Number field, enter an alternative number, if applicable.
8Under Security, enter the User ID and Password for this Dial-in User to access the
server LAN Modem.
9Leave the DNS Addresses fields blank, as these values are assigned by the server
LAN Modem upon connection.