Remote Access Service - Nortel BCM50 Configuration Manual

498 Chapter 69 Dial Up overview

Remote Access Service

Remote Access Service (RAS) allows a client system to dial a telephone number and establish an
IP link with a BCM. This link is a connection across a telephone network over an ISDN line, or
between a modem on the client system and a modem on the BCM. Once this link is established,
the client can run IP applications to access the BCM system's OAM server, Web Page Server or
BCM Monitor.
A user must provide credentials to establish the PPP connection. The credentials used must match
the ones of a BCM account which has the PPPLogin privilege.
Note: The modem or ISDN interface must be enabled for a connection
to take place.
The BCM can be configured with callback users along with their callback numbers. In this
scenario, the user can ask BCM to callback before establishing the PPP connection. The BCM will
validate the user name and use the callback number associated with the account where the user
name was found. The authentication will be made using the user name and password associated
with the account where the callback user name was found. The modem will try to call a
configurable amount of time, with a configurable delay between attempts.
The BCM modem or ISDN interface will automatically disconnect if there is no traffic on the IP
link for a configurable amount of time.
The IP addresses assigned to the BCM and the remote client are configurable.
• The default configuration for the modem dial-in is for the BCM to assign itself an address of
10.10.14.1 and assign to the remote client an address of 10.10.14.2. The settings can be
changed to have the remote client assign itself an address or even assign the BCM an address.
• The default configuration for ISDN dial-in is for the BCM to assign the first ISDN interface an
address of 10.10.18.1 and the second client an address of 10.10.18.2. The first remote client is
assigned 10.10.18.10 and the second client is assigned 10.10.18.11. The settings can be
changed to have the remote clients assign themselves an address or even assign the BCM an
address.
Finally, an administrator has the capability to disconnect a modem or ISDN call if they find that a
modem or ISDN call is in progress.
To program the RAS configurable options, select:
• Configuration > Resources> Dial Up Interfaces > Modem Dial-In Parameters
• Configuration > Resources> Dial Up Interfaces > ISDN Dial-In Parameters
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