>>Got a crash course in Cisco routers this weekend. Trying to get a 1720 to talk to a T1 after using the Cisco Configmaker program, ...
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>I have seen ConfigMaker, but never used it actively. All our course is oriented towards learning commands.
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It is a neat program for visually constructing a network and delivering configurations to devices. Something I did within the program would not allow me to set an IP route for the router. That was why I was trying to delete the start up config. Just didn't know enough at the time. On the phone with the T1 provider tech who also knew nothing about Cisco commands and feeling pressured. You learn from mistakes better than success sometimes:)

>> and the T1 could not see the router and I could not get the serial interface to come up,
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>Is that interface labeled as "Serial 0" or similar, or rather something with "BRI"?
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>Both extremes of a serial conection should have IP addresses, both in the same range (subnet).
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>One end of the serial conection, the one which assume the DCE role, should have a CLOCK RATE command. The other one doesn't need this command.
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>Any interface is disabled by default. You enable it with the command NO SHUTDOWN.
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NO SHUTDOWN would not bring Serial0 up. It is a WIC T1 that the router diagnostics indicated was OK. Will an interface come up and stay up if there is no signal?

>> I managed to wipe the flash memory.
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>That would most likely be with the command ERASE FLASH. DELETE FLASH:? on the other hand, allows you to select individual files to erase - of course, here you must also be careful not to erase the operating system (the IOS image).
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Exactly. Did not know that the OS was in flash. But I learned quick enough!

>> I didn't know the first Cisco IOS command, but now I am loading images and configuring like I've got weeks of experience! }:)

Got the router back from Phoenix today. Got an image from Cisco earlier in the week. Monday I'll hook it all back up and use zModem to load the OS. Maybe then I can get it right!