After serious thinking Tim wrote :
> Alister wrote:
>> Hi,
>>
>> Has anyone had any experience of these phones on Trixbox, particularly
>> has anyone managed to get call transfers working?
>
>
> Have you changed the DTMF type to RFC2833? Untick where it says Audio.
>
> Tim

Hmm.

Call transfer works fine on inbound calls to the handset, albeit using
the # key, rather than R.

Unfortunately, there seems no way to transfer a call that has been
initiated on the handset.

Pressing R does nothing.

Pressing #, I can hear the tone which seems to echo back repeatedly.

Any tips Tim?

At this point, I think I may be better off with normal cordless phones
plugged into an SPA or PAP2.....