When I tried to set up the VOIP, it turns out the files were no longer available on the SFR web site - a victim of Neuf''s acquisition by SFR no doubt. Fortunately I had a copy on an old computer.
The only way of installing new SIP accounts seems to be via the configuration file.
I was able to install a non-Neuf SIP - an old Wengo and a Webcalldirect (Betamax) - account via the configuration software, but the phone can only handle one SIP account at a time.
IPTV. According to a report in a user forum, an active Wengo account can be used to reactivate the TV rights. This is quite probable, as Wengo had been acquired by Neuf and Neuf uses the Wengo address for its activation, as can be seen in looking at Neuf's configuration software.
In any case, it doesn't work now.
.But SFR are streaming TV for the Android and iPhone. Pity they don't take care of their existing customers!
Here are a couple of links: