AT&T 5870 - Manual (Page 8)

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5
About Handset Registration
1 The cordless handset that came with your system is automatically
registered as Handset 1.There is no need to re-register.
2 You may register up to a total of six Expansion Handsets to this
telepnone system.(Model 5800 handset sold separately).
3 Additional handsets will be assigned Handset 2, Handset 3, Handset 4,
Handset 5, and Handset 6.
4 When you install the handset battery pack, the handset will display
SEARCHING FOR BASE (if it’s registered) or ENTER BASE ID (If it has
not been registered).
Register an Additional Handset(Model 5800
Handset)
1 Make sure the handset battery pack has been charged for at least 12
hours and that the power cord is plugged into the base unit.
2 At the cordless handset, press the softkey under .
3 Enter the 15-digit Base Unit ID Code located on the underside of your
Model 5870 base.
4 Press the softkey under . The screen displays PLEASE WAIT!!
5 After about 45 seconds, the screen displays FOUND BASE. If the handset
displays BASE BUSY TRY LATER, the base is in use.Wait until the base is
in idle, then try the registration process again by repeating the step2~4
above.
OK
NEW
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