Chosen Solution
I de registered my VTech cs6629 but now I can not register it. It continues to attempt to register then says failed.
Hi, Is the base station powered on? Did you try placing the handset back into its’ base and then check if it starts to register? The In use light on the base station will being to flash Try to reset the system by removing the AC power from the base and disconnecting the battery in the handset. After about 1 minute reconnect the AC power to the base and reconnect the battery in the handset, place the handset in the base and allow a couple of minutes for registration.
I just purchased a VTech DS667V-2G with four additional handsets. Only the base station handset registered, all the others continually failed. I finally fixed this by placing each handset on the base station in turn, once on the base station they automatically registered. I then put them in their chargers around the house and they continue to work. It is unclear why this works but not on their own charging stands, but anyone experiencing this issue should try this before calling for tech support, the response on VTech’s site is not helpful.