Hmm yes there is. Looks like there are various Siemens Gigaset phones that can do both.... I will take a closer look at them.
Gigaset do hybrid phones but you'd still need a separate service from a VOIP provider to make use of the VOIP features of the phone. Otherwise you'd be paying for a comparatively expensive phone, to only be able to use the standard DECT features of it on your VM landline.
That's fine, the ones I am looking at are not overly expensive and I would rather futureproof than get another standard DECT phone even if I have no intentions currently to take up a VOIP service.
