Syncronous and Asyncromous are layer 1 properties. The WAN technologies you mention are layer 2 technologies. ISDN can run Sync and Async data on it. PPP is the same. Frame Relay can also run on an Async or Sync line. ATM is Async.
The Difference between the Sync and Async is that Sync clocks off the line. The clock is part of the data. Async the clocking is not on the line. The end equipment uses their internal clocking to receive and transmit data.
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.