Check whether the DHCP server is enabled or not in the router:
Heres how to:
log into D-link DIR 615 router page.
go into
Setupthen to
Network Settings.
scroll down to
DHCP Server Settings.
Check whether the checkbox for "Enable DHCP SERVER" is enabled or not.
If YES (that is DHCP enabled):
This means every computer in your network is assigned a Dynamic IP address by the router(you can read about it here:
http://en.wikipedia.org/wiki/IP_address )
Heres what to do now:
check the settings in your phone there should be something like IP settings or Set Static IP.
Well do not set any static IP. Keep them in some kinda auto or DHCP enabled.Look inside ur phone's user manual for more details.
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IF NO(that is DHCP not enabled):
This means
IP addresses have to be manually configured (Static IP addresses) into each computer or device connected to ur Network.
Heres what to do now:
Go to your phone and set or check Enable static IP option.
and set a IP address like this 192.168.0.X here X is any number between 1 to 199.
but make sure all devices connected to your network have different IP addresses.
Subnet: 255.255.255.0(check this in your router settings in the Network settings of the router)
Gateway: 192.168.0.1
DNS:8.8.4.4
DNS 2 : its optional.