Tip & How-To about D-Link DPH-540

No special firewall rules needed for DPH-540 and Dlink DI-604 router

My DPH-540 works fine behind a DI-604 NAT router, without any special firewall configuration on the DI-604 (I connect to either RingCentral or SIPPhone). I hope to get another SIP phone and see if both phones can work simultaneously behind the NAT router; many web sites suggest that a different proxy port must be used (the default is 5060).

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Switched internet service providers now the router doesn't work


You might want to check the routers settings to make sure that it is not configured to use PPOE connection which is for DSl and the Broadband connection. You can find the routers address by searching google. Linksys uses 192.168.1.1. You can always try resetting the router by pushing the reset button usually found by the power plug in the back.

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1) Your Network or DSL router may have bad or missing information. Powercycle your router and/or rebuild the configuration in your router.
2) Double-check your cabling to the computer. Make sure you have the correct type of cabling, straight-through CAT 5 or possibly a crossover cable and try another cable or test the cable to make sure its working properly.
3) Check your network card to make sure its configured correctly and working properly. Many times setting the network card to 10Mbps/Full Duplex will solve this issue. To do this, open Control Panel, System, Device Manager. Go to the properties of the Network card, click on the Advanced tab and find the Link Speed and Duplex section. Change it from Auto Detect to 10Mbps/Full Duplex.
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5) Check your IP address assignments and workgroup settings in the computer for accuracy. Statically assign IPs to the computers in your network.
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