[Nokia Ron]

This week the Ask the Expert topic is VoIP Voice over Internet Protocol.

If you have any questions for our expert in this smoking hot technology we will try to answer them as promptly as possible.

Please keep your questions on Topic.

Ron

[bludin]

OK, here's a question which is only indirectly a VoIP question and it is not really a developer question either, so I'm not sure it's appropriate to post it here. On the other hand, I haven't been able to get an answer from the Nokia discussions forum or from Nokia support, so I'll give it a try:

I'm unable to answer, control, or end internet calls with my bluetooth headsets (Blueant Z9, Nokia BH-602) on my N95-8GB. The audio works just fine, but I have to use the buttons on the phone to take or end VoIP calls. Is this a general problem with the Nokia SIP client? Or are there headsets that work? Would it be possible to write an add-on software that monitors the bluetooth communication for button commands and relays them to the SIP client and vice versa (at least that's a bit of a developer question)?

Cheers, Beat
Beat

[stenlik]

Hi,

what is the NAT traversal technique the Nokia is using/plans to use in its SIP/VoIP solutions? ICE?

When it will become part of the SIP stack?

BR
STeN

[meskausk]

Hi,
NAT traversal methods are depicted in the presentation:
http://www.forum.nokia.com/info/sw.n..._0_en.pdf.html
Media sides (RTP flows) use STUN as well.

ICE is not yet fully standardized by IETF. Granted, there's an ICE final I-D but TURN is still missing that is mandated by the I-D.

thanks,
paulius