Im N80 Handbuch steht zu SIP
Settings
Person-to-person connection settings
A person-to-person connection is also known as a Session
Initiation Protocol (SIP) connection. The SIP profile
settings must be configured in your device before you can
use Video sharing. Setting up a SIP profile allows you to
establish a live person-to-person connection to another
compatible device. The SIP profile must also be
established to receive a sharing session.
If you know a recipient’s SIP address, you can enter it on
the person’s contact card. Open Contacts from your device
main menu, and open the contact card (or start a new card
for that person). Select Options > Add detail > SIP or
Share view (the correct option depends on the network
operator). Enter the SIP address in the format
username@domainname (you can use an IP address
instead of a domain name).
Es geht also um Video Sharing... Im ganzen Handbuch taucht das Wort VoIP kein einziges mal auf.
Und so registriert man sich beim SIP Server:
During an active voice call, select Options > Share
video > Live or Clip.
If you selected Clip, a list of video clips opens. Select a
video clip you want to share and Options > Send
invitation.
Das hat rein gar nichts mit VoIP zu tun.
SORRY, das ist ja ein E60 Thread... Ich hab's mit dem N80 verwechselt.