Paradyne FrameSaver SLV 9126, Руководство по эксплуатации

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2. Security and Logins
9000-A2-GB33-20 May 2003
2-5
Controlling ISDN Access
iMarc units with a DBM can limit access through the following methods:
„
ISDN Call Security
„
Disabling ISDN Access
ISDN Call Security
The iMarc unit uses the Caller Identification Method to screen calls and avoid
accidental or intentional disruption of network traffic. The answering DBM only
accepts calls with valid calling number identifiers or phone numbers.
When the ISDN DBM interface is enabled and Caller Identification Method is set to
Caller ID, the DBM takes advantage of ISDN services for network backup and
Calling Number Identification Service (CNIS) to provide backup security. ISDN
assures the integrity of calling party identifiers. The DBM uses the calling party
identifier to identify the calling unit and switches PVC connections as specified by
the user. No additional security is required.
When the ISDN DBM interface is enabled and Caller Identification Method is set to
Proprietary, the DBM queries the originating unit for its Local Phone Number to
identify the calling unit. If the returned number is in one of the unit’s Inbound
Calling IDs, the call is accepted. If not, or if the queried unit does not respond
within five seconds, the unit drops the call.
See Caller Identification Method in the iMarc SLV Configuration Reference for
additional information.
Disabling ISDN Access
Procedure
To disable ISDN access:
1. Select the ISDN Physical options.
Main Menu
→
Configuration
→
ISDN
→
Physical
2. Set Interface Status to Disable.
3. Save your change.
See Configuring the ISDN DBM Interface in the iMarc SLV Configuration
Reference for more information about ISDN BRI or PRI DBM configuration
options.