W60B and W54H can't handle simultaneous calls... Need help

[Babylonia]

What @complex1 is writing is true as for using several VOIP devices / phones.
(E.g. a desktop phone with its own SIP account).

But not so as for several wireless DECT hand sets.
Base Station can use just one SIP-account.
But all hand sets should allow to make there own call by the same SIP-account.

At least in my situation I have a normal work around by that.
Just made a test again, and all is running like that.

Test 1 - calling by mobile phone to SIP account A ===> all hand sets ringing
I just take the call, so open connection.

Test 2 - calling by a desktop phone (total different line / number and SIP account)
to SIP account A ===> the other DECT hand sets are ringing.
I just can take the call, so open connection by a second hand set.

So two different open calls, just using the same "SIP account A" by the base station.

This is one of the advantages of a DECT solution, in opposite to e.g. separate desktop phones.