I have a new 1841 router that I am trying to setup DHCP on. When I enter the option command string ie> option 130 ascii "MITEL IP PHONE" , I get an error saying "% Invalid input detected at '^' marker.", where the marker is just before the word IP. I have this config on all our other routers and it works fine. The router has IOS version 12.4. Image version is "c1841-ipbase-mz.124-15.T9.bin". Any suggestions?