Changed router ip now unable to connect...

Question

Hi I have a zhone 6218 and I was having a conflict with ip addresses (zhone and linksys were both set to 192.168.1.1) so I changed the zhone to 192.168.123.1 now I am unable to connect to the zhone (I get an ip address assigned to me) but when I enter http://192.168.123.1 into IE I instantly get unable to view webpage... I tried telnet also but telnet just sits there with blank screen no option to enter un or pw... Any ideas how to connect to router again? I can't restore defaults as it will erase stuff needed for tv (entone)