You would need an interface providing asynchronous serial ports. Something like the HWIC-8A or the HWIC-16A. Needing 20 ports you will most likely use one of each type (having then 24 ports).
The cable to connect to the HWIC is the CAB-HD8-ASYNC. If you attach routers and switches console ports directly to the RJ45 plugs everything is fine. If you have other types of serial ports to serve (DB-9 or DB-25) then you need the according adapters. I don't know if they have product numbers...
Or to have it all on one single PDF follow this link
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.