Hi, ADSL2+Wireless Modem Router was set up, it was good, but without the yellow cable, it was not connect to net why? Thanks, looking forward of your reply.

Contact the Internet Provider. Looks like the net connectivity has some issue.

Good Luck

This is a wireless router, so yes, you should be able to access the internet without a cable. The router also only supports wired lan, not wireless.

all wireless devices must be allowed in the router by either MAC address or by name. This is accomplished by logging into to the router and setting up the device in with the wireless setup feature in your router. The router will not allow the device to connect without permissions.

Yes, Linksys WRT160N is 100% compatible with ADSL2. Linksys WRT160N is a Broadband router.

you will not be able to use the linksys WRT160N, as an ADSL2 modem router. you should be using an ADSL2 Modem separately and connect the cable from the modem to the Linksys WRT160N. Hope this clarify the doubt.

Forward xbox port numbers on the router.

Your going to have to get in to the administration portion of the router to setup port forwarding.....without this access you can't do anything to forward the ports....

There should be someone who has this access as it sounds like your in a dorm/apartment environment....

First try connection the Yellow ethernet cable from the rca modem to your computer's network connection. If you get a connection this way, then your modem will work with a ethernet cable. If not, then call Comcast for help. The modem ethernet out to computer port must be connected to the wan line of the router. Then you can connect an ethernet cable from your computer network connection to one of the 4 ports of the router. For wireless connections you must set up the router and wireless adaptor with the same settings to connect. Follow the routers directions.
Good Luck

no, but you need to configure the router to connect to the internet, you should have a "quick start guide" that will help you connect to your router and set your ADSL dial settings (as it needs this to connect you to your internet service)

once these connection settings are set you should be able to connect to the internet

you can then explore the other settings including the wireless configuration of your router

if the router is already set up the usb dongle software will need to be used to connect to the router to allow a connection without the need for a cable as the dongle will see the wireless signal

After a while the net stops working then when i open the router page for the settings it starts back working