voip, sip: talk becomes chat suddenly
 

Hello everyone,

I bumped into a strange problem just today. Normally i use my mobile provider to make calls, but at home, i always could use my sip-account to make sip-calls. This was done by choosing the sip connection type at the dialpad.
But today i discovered the only connection type available is 'mobile' (where i normally could choose between 'mobile' and 'sip'), sip is gone and if i call my n900 from an other phone via sip, is starts a.....chat-session (?)
What has happened??

Re: voip, sip: talk becomes chat suddenly
 

btw: calling with laptop works fine, so it isnt my sip provider, so maybe a mime-thingie?

Another thing:

I used to have an entry in 'advanced settings' of VoIP, with was a checkbox with 'use for telephone numbers', but that entry has disappeared from the advanced settings menu. Anyone else has the same problem?