Learning by Doing: CISCO Certified Network ... - SCN Research

Supplemental or Challenge Activities:
1. Go out to CISCO and download the AT command set.
2. Try writing different scripts for your modem.
a. Write one to limit line speed to 9600 bps.
b. Write another to answer on the second ring.
c. Write one to show default settings during the boot.
3. Try using a protocol inspector to “see” the negotiation between two PC’s
using DUN. Change the settings for protocols and stuff.
So What Have I Learned Here?
Ok…so this is a bit more in-depth than you really need to get with modems. If you
continue on with your CISCO training then you will have to be very familiar with these
commands. We use these to set up the ability to dial into a router and make changes.
Again, this is one of those labs where I grew up doing this but newer people to the field
have not had the need for anything like this…call it a catch-up if you want.
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