pvds schreef op zondag 27 augustus 2006 @ 20:17:
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Hoi,
Ik krijg mijn VOIP account ook met geen mogelijkheid aan de praat alles al geprobeerd maar ik denk dat mijn FW de boosdoener is!!! helaas, redirects en portforwarding mochten niet helpen ik ben een beetje uit geëxperimenteerd SIP komt vermoedelijk niet door de NAT translation.
Iemand nog een tip?
van de nokia site:
Q: Does my Nokia device support voice over IP (VoIP)?
A:
Yes, your Nokia device support VoIP telephony based on the SIP (Session Initiation Protocol). This means that the service has to be based on the same technology standard.
Please consult your VoIP service provider for more information about compatibility.
In the first phase, your Nokia device has been designed to be used with a SIP based VoIP server which resides on the same side of the firewall as the phone, for example inside company premises.
Mobile VoIP telephony is unique compared to the fixed VoIP telephony, because users expect to be able to use their mobile phones in multiple different spaces, such as in the office, at home or under WLAN hotspot. Hence the IP phone call should be able to cross different kinds of firewalls on its way to the server. In order to be able to do this, a method called Network Address Translation (NAT) is needed to translate different IP addresses on different sides of the firewall.
Your Nokia device do not currently support a technique to enable the crossing of the firewall (called NAT traversal).
Your Nokia device support compatible enterprise voice solutions from Avaya and Cisco which operate inside the company firewall and hence do not require NAT traversal.
We are also working on ways to enable the NAT traversal. Our current plan is to build support for the most common methods for NAT traversal, called STUN, TURN and ICE.
STUN support is expected to become available during 2006, and TURN and ICE during 2007.