Cabletron Systems CSX100 series User Manual - Enable Caller Id Security

Configuring Advanced Features  75

Note 1: Caller ID service (for the local router phone line) must first be

obtained from the ISDN provider. 7 or 10 digits may be presented by switch.

Note 2: The configured phone numbers must contain the actual digits

presented by the central office switch.

Enable Caller ID Security

⇒

 To enable Caller ID Security systemwide, click ISDN Settings and check

the box Enable ISDN Caller ID Security.

⇒

 To specify unique numbers for the remote router, click Remote Routers

and then Dial Settings. Check the appropriate radio button in the Dial-

Back box.

⇒

 Click Dial-back Numbers to add or delete remote routers’ numbers.

⇒

 Click Store to save the system settings and remote router database

configuration.

⇒

 Then test Caller ID: If the call is rejected by the local router, check the

message displayed on the console message window in the Port Monitor or

use the system history command for the actual digits received and

reconfigure with the correct number.

ISDN Dial-Back

Dial-Back forces the local router to reject an incoming call from the remote

router and to dial the remote router back. This feature is used to cause ISDN

phone charge billing to the local router.

Dial-Back can be enabled, disabled, or enabled to only occur when the remote

router calls first.  When Dial-Back is configured, the local router’s call delay

timer setting must allow for disconnect and dial back; the defaults are 30

seconds for the U.S., and 90 seconds for Europe and Japan.

Dial-Back prerequisites

In order for ISDN Dial-Back to work, the following features have to be

enabled:

•

 Caller ID must be provided by the ISDN provider for the line receiving

the call (local router)