@Pinwheel 

The TAE connection is an analog connection which transports only analog electrical signal (voice and touch tone) to the router (and back). There is no data exchange between these two devices. Imho you've lost the local entries of your former DECT phone.

you can reenter manually the phonebook entries in the router as described in the user manual.

You can or have to reenter manually the phonebook entries in the router as described in the user manual . This schould be also a good idea if you'll use more then one DECT or line coupled phone with your router. So you can access the entries with all your phone devices.

@Pinwheel  marked it as solved ... not the best idea, because:

---

@NoOneElse  schrieb:
[...] if you'll use more then one DECT or line coupled phone with your router. So you can access the entries with all your phone devices

this is partially wrong! As written before, line based ( TAE connection) does not share the contacts to a phone connected in this way. This is only possible if the Phones are connected directly to the Router by DECT (CAT-iq 2.x).

by the way:

---

@Pinwheel  schrieb:
so I bought a new phone, a Panasonic KX-TG6861GB

---

the hand unit of this device is using DECT (GAP) and does not support CAT-iq 2.x.