Avaya M770 Signaling Security (Access Control) Commands

Avaya M770 ATM Switch User’s Guide 249

Signaling Security (Access Control) Commands

This part lists and describes the CLI commands of the Avaya M770 ATM switch's

Signaling Security (Access Control) feature. The purpose of the Signaling Security

feature is to filter out calls during the setup phase at the signaling level. The filtering

is based on the source/destination ATM addresses present in the call setup. The

rules by which calls are screened are based on creating a Template that defines the

addresses mask and the rule (permit/deny) and creating filters that assign

templates to vports.

The calls screening procedure is as follows:

Figure 20.1 Call Screening Procedure

Start

Signaling

Security State

Accept the call

Reject the call

Disabled

VPORT

in Secured

Mode

Traverse the

filters list from

highest priority to

lowest priority

and stop at the

first match.

Yes

Match found?

Check

Template

Yes

Permitted

Not

permitted