Error in connecting to maintenance page

Question

Hello, I'm using Broadband-wireless router Model
BEFW11S4 - v4.
I'm using VDSL connection with the router
(the VDSL modem can connect to ISP by itself)
so the router is operated like a switching HUB w/wireless capablity,
and the configuration is worked well, but someday It gone.
so I tried to connect to maintenance page but It didn't work;
after sereval hours of struggling, I got some facts:
1. ping test to host 192.168.1.1 didn't say "no such server"
                                  but "Req. time out"
2. when connect the modem to Downstream 1, and all other clients
  are connected to other downstream port, anyway, the net is shared.
  (and the IP of computer is same as the modem is directly
   connected to client computer.)
3. when connect the modem to upstream(internet), and all other clients
  are connected to other downstream port, the router build its
  inter-network, assigned internal IP address, and all the thing looks
  no problem... but the net is not shared.
I'm waiting your sincere help..
thanks.

Answer 1

what ip add do u get with the computer directly connected to the modem ?? also , if u cannot ping 192.168.1.1 , ensure that the firewall on that computer is turned off...go to the LAN card's properties and reduce its Link Speed to 10 Mbps half mode ....
if nothing works , reset the router for a minute and do a power cycle....try to ping again ..