69Canceling Registration/Re-registrationUseful InformationFor assistance, please call: 1-800-ADT-ASAPRe-registering the HandsetIf you want to re-register the cordless handset to the base unit or a different baseunit of the same model, you need to register it to that base unit. The cordlesshandset will be given a new extension number of that base unit. Only one cordlesshandset can be registered at a time.Make sure the base unit and the other cordless handsets are not being used.Have both the cordless handset and base unit nearby during registration.• You can stop registration by pressing [OFF] on the cordless handset and pressing[MUTE] on the base unit.If you have canceled handset registration at a previous base unit (p. 68), startfrom step 6.1 Cordless handset: Press [CONF/FUNCTION].2 Cordless handset:Press [ ] at “Telephone”.3 Cordless handset:Scroll to “Initial setting” by pressing[ ] or [ ], then press [ ].4 Cordless handset:Scroll to “Registration” by pressing [ ] or[ ], then press [ ].5 Cordless handset:Press [ ] at “HS registration”.6 Base unit: Press [MUTE].• The MUTE indicator flashes. After the MUTE indicator starts flashing, therest of the procedure must be completed within 1 minute.7 Cordless handset:(1) Press the soft key ( ).(2) Wait until 3 beeps sound and the displayshows the new extension number.• Registration is complete.If you have not canceled the cordless handset registration at the previous baseunit (p. 68), the handset number still remains on that base unit memory. To erasethe handset number from the previous base unit, perform the following steps byusing the base unit: (1) Press [FUNCTION/EDIT], (2) Press [MUTE], (3) Enter“335#”, and (4) Enter that handset number (1 to 3). 3 beeps sound, then thehandset number is erased from the base unit memory.Base Unit & HandsetTelephoneInitial settingRegistrationHS registrationOKPress MUTE onbase unit, thenOK on handset toregister handsetSPHandset [2]RegisteredIN USE [2]Ex. Extension number 2