82 CHAPTER 6: GETTING MORE FROM Y OUR T ELEPHONE SYSTEMCalling Line IdentityRestriction (CLIR)On certain NBX systems, if your administrator has set up the system sothat you can block your Caller ID (telephone number), you can choose tonot transmit this information during an external call. Your administratormust enable this feature, called Calling Line Identity Restriction (CLIR), onthe NBX system. If this feature is enabled system-wide, you can choose torestrict calls:■ For all external (outbound) calls that you dialOR■ For only the next single external (outbound) call that you dialYour administrator can configure your system so that CLIR is alwaysactive, in which case you cannot change the CLIR settings on yourtelephone to override this option.CLIR for All External CallsTo enable CLIR-All for all calls from your 3Com Cordless Telephone:1 Remove the handset from the charging unit.2 Press the Talk button.3 Press Feature + 889. The display panel on your 3Com CordlessTelephone shows CLIR-ALL on.4 Dial the number that you want to call.The NBX system does not send caller ID information on this call or anyfuture calls until you disable this feature.To disable CLIR-All:1 Remove the handset from the charging unit.2 Press the Talk button.3 Press Feature + 889 again. CLIR-ALL off appears briefly in the displaypanel and then disappears when you hang up the handset.To view your current CLIR-All setting, log in to NBX NetSet >User Information > Feature Settings.