[Serusers] ZyXel P2000w wlan SIP UA's

[mike]

Hey! Recently bought a couple of ZyXel P-2000W sip ua's and have had  
trouble registering with SER. It wouldn't even register to iptel's proxy.  
Anyone have any hands on experience with the matter? Certainly is a nice  
phone. Direct IP-IP calls within a private network work fine and do not  
even require a proxy, but have problems calling out. Ideas anyone? The  
product link below.

http://www.zyxel.com/product/model.php?indexcate=1075688089&indexFlagvalue=1075687935

thanks,

Michael Seppänen