Unable to register the handset

The procedures to deregister are, of course, specific
to each make and model number of cordless phone.
All of them are a LOT more involved than simply
removing the battery.

For some AT&T, VTech, Uniden, & GE model numbers
you might try the following:
=====================================
For many AT&T models it is simple:
1. When the handset says "Connecting..."
enter *331734 [menu]
it will soon (chirp) and display "Not registered"
=====================================
For many VTech models it is a bit more involved:
1. Start by taking off the battery compartment cover.
2. press [menu]
3. scroll up/down to "Settings"
4. enter * 7 8 9 0 #
5. if display reads "Test Base",
scroll to "Test Handset", press [select]
scroll to "next page", press [select]
6. scroll to "Register Clear?", press [select]
7. display asks "Confirm?" or "Register Clear??",
press [select]
8. display reads "Ok" (chirps), press [ off ]

9. UNPLUG THE HANDSET BATTERY
(this is why the cover is off)
10. Wait ~30 seconds, re-connect the battery &
replace the cover
11. display reads "Not Registered"
=====================================
For many Uniden models:
1. Press and hold the [END] and [ # ] keys at the
same time, after a few seconds the display reads
2. "System Reset, Deregister Handset"
3. scroll to "... Base Unavailable"
press [SELECT]
4. Handset (chirps)
press [END]
5. display reads "Not Registered, Place in base..." =====================================
For some GE models:
1. press "program[mute]"
2. scroll to "Handset Setup" press "program[mute]"
3. scroll to "Deregistration" press "program[mute]"
4. scroll to "Yes" press "program[mute]"
5. display reads "Not Registered"

=====================================
Once you have the handset displaying "Not Registered"
you can follow the User's Manual instructions to register
the handset.

The model number for your cordless phone is shown on
a small sticker underneath the battery in the handset --
enter this number at www.manualslib.com to get a free
copy of the User's Manual if you need it.

Good luck!
------------

This is the registration procedure

Step 1: press MENU-6 and select 3 “SET BASE”
Step 2: press the REG key on the master base
Step3: press register to finish the registration procedure.
• After the registration complete, handset 11 and handset 21 can
2-WAY intercom with each other

If issue persists reset the unit start registration by using 2nd unit that currently unable to register. if issue continues please inform for further troubleshooting

Good Luck

Hello Linda,

See if my FixYa Answer from this previous post helps to Deregister and Register your old handsets to your new base.:

My phone says no link to base but am right beside it

Regards,

-Ellsworth

Here are the steps: Press menu, then press *883247# and then press the up arrow. Select deregister and then unplug and take the battery out for 10 seconds. Plug the phone back in and it's ready to be registered to another device.

Getting startedReplace a handsetIf you want to replace a handset or reassign the designated handset numberof a registered handset, you must deregister all the handsets and thenindividually register each handset.To make deregistration easier, read all of the instructions on this page beforeyou begin. To deregister all handsets:Press and hold FIND HANDSET on the telephone base for about 101.seconds (until the IN USE light on the telephone base turns on and starts toflash), then release FIND HANDSET.Press and release FIND HANDSET again. You must press FIND HANDSET2.while the IN USE light is still flashing. The IN USE light flashes forapproximately seven seconds.All system handsets show CONNECTING... The deregistration process3.takes about 10 seconds to complete. All handsets show NOT REGISTEREDwhen the deregistration completes.If deregistration fails, you might need to reset the telephone and try again.To reset:1.Pick up the registered handset and then press talk/flash.Press OFF/CLEAR and place the handset back in the telephone base.2.-OR-1.Unplug the power from the telephone base, then plug it back in.You cannot deregister a handset if any system handset is in use.

The "END" and "#" key combination can be used for several purposes:

1) If wanting to use an ALREADY REGISTERED HANDSET on an alternate base, and if if the INITIAL BASE isn't available to deregister the handset:

1a) Press "END" + "#" until it for 5+ seconds (wait for it to beep)
1b) Choose the "Base Unavailable" option
1c) That'll deregister the CURRENT HANDSET so that it can be re-registered on ANY base.

2) If a BASE has a handset registered to it which you no longer want registered but the registered handset is missing or broken:

2a) Grab another WORKING handset which is properly REGISTERED to the BASE in question
2b) Press and hold the "END" + "#" key for 5+ seconds (wait for it to beep)
2c) Choose the "Deregister HS" menu option
2d) Pick the REGISTERED HANDSET # to de-register. (Every other registered handset EXCEPT THE ONE YOU'RE ON will appear in the list!)

From the manual:

1) Before registering the extra handset, the battery pack MUST be charged for 15-20
hours.
2) With the main base in standby mode, press the MENU soft key on the base.
3) Press /vol/∧ or /vol/∨ on the base to select H S R e g i s t r a t i o n, and then
press the OK soft key.
4) On the handset, press and hold # for two seconds. To cancel registration, press
the CANCEL soft key on the base.
5) While the handset is registering, H a n d s e t R e g i s t e r i n g will appear in the Handset
LCD. When R e g i s t r a t i o n C o m p l e t e is displayed, the handset has been registered
to the base. If R e g i s t r a t i o n F a i l e d appears, please try these steps again.


Geno

I have a Panasonic KX-TG6700 base unit and KX-TGA670B handsets. We had a similar problem where we were no longer able to deregister the handset using the handset itself. We wanted to be able to use that slot that the broken phone was still occupyng. The solution that we found in the manual online was to hold down the intercom button for 3 seconds until the "in use" light turned on. Then press and hold the number of the extension you want to deregister until it beeps. At this point the base unit has freed that extension.

push menu on base station - select register phone

push # sign on twx977 phone at the same time

phone will register on 9485 base station and unit

hold the volume and intercom buttons together the in use light will come on and then go to menu on handset press 6 then 1 to regester that should work i just talked to a friend with a telecom buisness and he told me what to do with mine good luck