WAN Hardware

Making a WAN

Hi, I would like to know the best way to setup a WAN. We have 4 small companies and one main Head quarter.  2 companies are in one city and 2 are in another city. Below is the detail on what each site has. HQ(head quarter)- HP Mail Server (HP ML350) - Win 2003 Server + Exchange Server...

Cisco's 2500 series router and WAN card serial interface differences

What is the difference between the serial interface of 2500 series Cisco routers and the serial interface of WAN cards (WIC-1t)? If there is no difference then is there any data-rate difference between the above two serial interfaces?

Locked out of Edgemarc 4300T

I made a port forwarding change and now the router will not let me back in. Is there some sort of back door or a way in on the wan or RS232 side?

Show a peer why spending the extra money for a full duplex RF link is better than half for a WAN bridge

Where can I find reference material to show a peer why spending the extra money for a full duplex RF link is better than half for a WAN bridge? I have 20+ years of networking experience and this RF guy thinks he knows it all. He has management sold on a cheap solution. I'm not having much luck...