3Com 3102 User Guide - Page 87
Caller ID, Internal and External Caller ID, Calling Line Identity Restriction (CLIR)
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Caller ID 87 Caller ID Your administrator can set up your NBX system to allow for Internal and External Caller ID or can configure the system so that you can block your identity (telephone number) from anyone you call. Internal and External By default, the NBX system shows the extension and name of any internal Caller ID caller on the display panel of your NBX telephone. External Caller ID provides the same information for external incoming calls if your organization subscribes to the service from your local telephone company and if the caller has not blocked the information from being sent to the NBX system. Availability and service charges for External Caller ID vary by location. Calling Line Identity Restriction (CLIR) On NBX systems that include T1 lines that are configured as DS1, you can choose to prevent the NBX system from transmitting your Caller ID information to outside parties when you dial a call. Your administrator must enable this feature, called Calling Line Identity Restriction (CLIR), on the NBX system. If this feature is enabled system-wide, you can choose to restrict calls: ■ For all external (outbound) calls that you dial OR ■ For only the next single external (outbound) call that you dial Your administrator can configure your system so that CLIR is always active, in which case you cannot change the CLIR settings on your telephone to override this option. CLIR for All External Calls To enable CLIR-All for all calls from your telephone: 1 Pick up the handset, and press the Feature button and 889. The display panel on your NBX Telephone shows CLIR-ALL on. 2 Dial the number that you want to call. The NBX system does not send caller ID information on this call or any future calls until you disable this feature.