Dear all, i have set up using the Linksys wizard the SPA9000 PBX and 2 SPA942 VoIP phones. I have a DLink G624T router. I have not had to set any NAT settings on the router to enable receiving and send calls!!! i wonder if the wizard has magically done something or if the router has magically understood how to direct incoming calls to the PBX. comments? current net config: ***************** dlink (port 1) --> 8-port linksys switch --> pc, laptop, printer, scanner and a windows small business server. dlink (port 2) --> Linksys SPA9000 dlink (port 3) --> Linksys SPA942 dlink (port 4) --> Linksys SPA942 the dlink router WAN interface has a static public IP attached to it. Maybe i should set up port forwarding on the router and make relevant changes to the PBX configuration via the web interface. would this be the process: PBX NAT settings: ****************** in each of the Line tabs of the PBX i would edit the "NAT Mapping Enable" and "NAT Keep Alive Enable" by clicking "yes" is this correct? currently they are set to "no" ROUTER NAT settngs for PBX: ***************** select the PBX (assigned static IP address, eg 192.168.1.21) and create 2 nat rules for that IP address. rule 1: SIP_Rule port range 5060-5061 rule 2: RTP_Rule port range 16384-16482 in the DLINK router interface i have these options having selected the PBX Ip address: Rule name Protcol Port start Port end Port Map can anyone tell me what the port map means? NOTICE: i presume i only need to set port forwarding to the PBX and not to the phones also. is this correct? I would also like to query you about changing the host name on the 2 phones. i noticed when my router gives a Dynamic IP to the PBX and 2 phones they all have the host name "SipuraSPA". i felt this may lead to name conflicts so i edited the Web interface of each phone and gave them unique names. was this a wise thing to do? kind regards, Will.