I've got a customer using a 3660 connecting to 11 sites using a combination of point to point and frame-relay connections. Each of the remote sites has a router installed with a WIC-T1, and an ISDN module to be used for backup.
My goal is to have the remote site dial the PRI plugged into the NM-1CT1 channelized PRI network module of the 3660 when it's primary WAN connection fails, and then have the 3660 initiate a call back to the remote site for security purposes. We need to run 3DES across this as well.
If anyone has seen a config similar to this on CCO, or happened to have done something similar themselves your input would be appreciated.
Re: ISDN backup to PRI with dial back authentication
If I setup the dialer map, I still don't think I will have any way of knowing who is dialing in initially. To keep authentication local to the router though, I did a little digging and camp up with the commands...
user callback-line or
I'm thinking that I should be able to use some combination of these commands to get my dial-back talking to the correct router and using the PRI for the outbound calls. I've not used these particular switches on the user command though and don't know if they would really work for what I want. I'll do a little more digging on my end to see if their use here would be appropriate, and any input you might have would be appreciated as well.
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