Multi-unit Operation28Operating additional unitsAdditional handsetsUp to 6 handsets can be registered to asingle base unit. Additional handsets willgive you the freedom to, for example, havean intercom call with another handset whilea third handset is on an outside call. Seepage 4 for information on ordering additionalhandsets.Important:L The additional handset modelrecommended for use with this unit isnoted on page 4. If other model handset isused, certain operations (handsetsettings, base unit settings, etc.) may notbe available.L The included handset can be registered toonly 1 base unit. You can use additionalhandsets with this base unit, but youcannot use the included handset withanother base unit unless you first cancelthe base unit from the included handset’smemory.Registering a handset to abase unitTo register an additional handset to abase unit (easy registration)The included handset and base unit arepreregistered. After purchasing anadditional handset, register it to the baseunit. Ensure that the additional handset isswitched on. If it is not on, press and hold{ih} for few seconds to turn the handseton.1 Lift the additional handset and press{ih} to put the handset in standbymode.2 Press and hold {x} on the base unit forabout 3 seconds, until the registrationtone sounds.3 Place the additional handset on thebase unit. The registration tonecontinues to sound. With the handsetstill on the base unit, wait until aconfirmation tone sounds and w stopsflashing.Note:L If an error tone sounds, or if w is stillflashing, register the handset manually(manual registration; page 28).L If all registered handsets start ringing instep 2, press {x} to stop. Start again fromstep 1.L Charge the batteries of your additionalhandset for about 7 hours before initialuse.Manual registrationYou can register a handset to a base unitmanually using the following method.1 Press {j/OK}.2 Select “Handset Setup”, then press{>}.3 Select “Registration”, then press{>} 2 times.L If “Memory Full” is displayed, thehandset is already registered to abase unit. You can cancel the baseunit from the handset’s memory ifnecessary (page 29).4 Press and hold {x} on the base unit forabout 3 seconds, until the registrationtone sounds.L If all registered handsets start ringing,press {x} to stop, then repeat thisstep.L After pressing {x}, the rest of thisprocedure must be completed within 1minute.