In reply to a post by Pheasant:

It’s worth highlighting the major problem with suggestion (1) is the Panasonic handsets will default to a Generic Access Profile (GAP) when connected to a non-Panasonic DECT base.

So you would only have basic/core telephony functionality. All other Panasonic features the OP may require or be used to having won’t be present.

I suspect that much of what you describe is also available from the Fritz!Box itself and usable by any DECT handset; call transfer, intercom, callerID, shared contacts, etc all work, I believe.

In reply to a post by RetsimLegin:

In reply to a post by Pheasant:

It’s worth highlighting the major problem with suggestion (1) is the Panasonic handsets will default to a Generic Access Profile (GAP) when connected to a non-Panasonic DECT base.

So you would only have basic/core telephony functionality. All other Panasonic features the OP may require or be used to having won’t be present.

I suspect that much of what you describe is also available from the Fritz!Box itself and usable by any DECT handset; call transfer, intercom, callerID, shared contacts, etc all work, I believe.

I believe AVM do (or did) some level of compatibility check against Gigaset handsets. However if the OP was to choose this route, it's worth checking against what Panasonic will do natively as apposed to third party DECT base / what features would no longer work:

https://uk.fritz.com/service/knowledge-base/dok/FRIT...

https://p-cube.panasonic.com/au/s/article/PAU39716?l...

The Zen statement that gives rise to my concern, over using my Panadonic set-up from their router port, is contained within their overview to the voicmail service - ///(zenQ hypothetical) "I have extensions in multiple rooms- will these still work?" (zenA) "Unfortunately, with the switch to IP internal phone extension wiring will no longer work. Our suggestion is that you buy a dect base station and cordless phones. Alternatively, you could use the Fritz!FON application on your smart phone to take your Digital Voice calls in any room from your mobile phone."/// - My own OBSERVATION on reading this after reading the fruitful replies here makes me think I've misinterpreted Zen's text. Are they just saying their router (obviously) won't work as a hub for house extensions? I wasn't disappointed with the result to this naive enquiry here - what a response ! Can I please try out some conundrums in particle work here?

In reply to a post by robi4711:

The Zen statement that gives rise to my concern, over using my Panadonic set-up from their router port, is contained within their overview to the voicmail service - ///(zenQ hypothetical) "I have extensions in multiple rooms- will these still work?" (zenA) "Unfortunately, with the switch to IP internal phone extension wiring will no longer work. Our suggestion is that you buy a dect base station and cordless phones. Alternatively, you could use the Fritz!FON application on your smart phone to take your Digital Voice calls in any room from your mobile phone."/// - My own OBSERVATION on reading this after reading the fruitful replies here makes me think I've misinterpreted Zen's text. Are they just saying their router (obviously) won't work as a hub for house extensions? I wasn't disappointed with the result to this naive enquiry here - what a response ! Can I please try out some conundrums in particle work here?

I've boldened the key statement there - as that is exactly what you will have. So will work just fine.

Yes indeed. I suspect the "problem" is that the REN of the Fritzbox telephone socket is two or less.

They're probably covering themselves as most modern wired handsets made in the last 25 years or so , have a very small REN requirement.

Shouldn't matter to the OP anyway, as they're just connecting a DECT base into the phone port on the router. Not wired extensions.

In reply to a post by tripslaw:

Yes indeed. I suspect the "problem" is that the REN of the Fritzbox telephone socket is two or less.

REN as a concept is completely obsolete. It made sense when you had a mechanical bell in the phone case, but the regulations won't let you declare a phone as less than a REN of 1, but it is quite possible that modern electronics have equivalent of REN of 0.01.

Unless you're plugging in a 1970s handset (sort of thing I grew up with), then its nothing to worry about. In the early 1990s I was selling electronic ringer phones in shops as a teenager. Its a long time ago.

I am well aware of all that. It is Zen who need to guard against someone connecting a string of vintage phones.

I guess really the Frizbox, rather than Zen. Since there will be no ringer on the Openreach line after WLR goes.

In reply to a post by tripslaw:

I am well aware of all that. It is Zen who need to guard against someone connecting a string of vintage phones.

Hopefully that is very much an outlier / edge case, and would quickly be discovered once the phone(s) failed to ring or at least ring properly.

Whomever was connecting a string of very ancient phones would quite likely need to do some master / extension socket re-wiring to "inject" FXO service from the routers analogue phone port - so its unlikely to be a plug an play type mistake.

In any event this doesn't really concern the OP (who's head is probably spinning with all these acronyms) 😅