Call Security And Remote Access; Defining Restriction Filters - Nortel BCM50 Configuration Manual

Chapter 52

Call security and remote access

System restrictions are required to ensure that your system is used appropriately and not
vulnerable to unauthorized use.
Call security includes:
• restriction filters, which limit outbound call access
• remote access packages, which limit system call feature access for users calling in over the
Private or Public network
• Class of Service codes, which require remote system users to enter a password before they can
access the system. CoS passwords also can have restriction filters applied.
Refer to the following topics:
• "Defining restriction filters" on page 415
• "Remote call-in programming" on page 419
— "Creating Direct Inward System Access (DISA)" on page 420
— "Defining remote access packages" on page 422
— "Defining CoS passwords" on page 423
Call security works in conjunction with your dialing plan. Refer to

Defining restriction filters

Restriction filters allow you to restrict the numbers that can be dialed on any external line within
BCM. Up to 100 restriction filters can be created for the system.
To restrict dialing within the system, you can apply restriction filters to:
• outgoing external lines (as line restrictions)
• telephones (as set restrictions)
• external lines on specific telephones (as line/set restrictions)
Restriction filters can also be specified in Restrictions service for times when the system is
operating according to a schedule. Dialed digits must pass both the line restrictions and the set
restrictions. The line per set (line/set) restriction overrides the line restriction and set restriction.
"Dialing plans" on page
Networking Configuration Guide
415
217.