Dial Plans for an SPA8000

It's been a while since I've posted anything to this blog, but I want to change that.  Here is an issue that dogged me for a bit with a customer of mine, which I thought I'd share the resolution for.

My customer who'd ordered a SIP trunk to replace their copper telephone lines, had an older Meridian Telephone System.  This system didn't support the configuration of a SIP trunk directly.  My solution was to use a SPA-8000, an 8-port IP Telephony Gateway from Cisco/Linksys.