Stuff that was so important, I had to write it down.
Cisco
MODEMs and Asynchronous Dial-up
Believe it or not, there are good reasons to use MODEMs on POTS lines to this day. One may want to have a MODEM connected to a router for out-of-band communications in case of disaster recovery. A Typical MODEM Connection [Host]–[MODEM]—-[Telco Switch]—-[Telco Switch]—-[MODEM]–[Host] MODEM Signaling – Control Pin 2 = Transmit Data Pin 3 = [...]
WAN – Wide Area Networks
WANs mean connecting multiple networks and technologies into one cohesive network. Terminology Central site: Corporate enterprise network. Mobile Users: Sales people, engineers, traveling users, etc. Branch Office: Users want to get to a central site. Zero footprint: web browser based applications. VPN: Virtual Private Network – a way you secure WAN connections. Remoted Access Networks: [...]
© 2007 Random Randy Ramblings. 
