My last message was about LMOS/MLT, and MLT's monitoring capabilities of subscriber lines. Another phone company testing system worth mentioning is SARTS (and DACS and SMAS. That's three, but they're related.) SARTS is the Switched Access Remote Test System, and is used in testing special service circuits. And what's special service? A lot of things that AREN'T POTS (Plain Old Telephone Service). Anything from WATS service, to digital carriers (DDS, T1, etc.), and so on. And it's the hard working men and women of the aptly named Special Services Center (or just "Special Services") who oversee nearly every aspect of installation and maintenance. Ah, yes. (Clears throat) The reason I mention them is because every digital carrier goes through your friendly neighborhood BOC central office, whether it be a company's private carrier or someone's dedicated connection to the Internet (EFF's, toad's, etc.). Like MLT is a system used to test subscriber lines in real time, so SARTS is a system used to test special service circuits. In conjunction with SMAS (Switched Maintenance Access System), and the ability to jack-in with their favorite test equipment (such as the much liked T-BERD), together they make up an unbeatable arsenal in trouble shooting. So why do they screw up your leased-line service? There are three rules in maintenance: Training, training, and, of course, training. Or lack thereof. The lovely system which complements these, and even supercedes the need for SMAS points, is DACS, the Digital Access and Cross-connect System. One of its most notable abilities, is providing per-channel 64kbps (DS0) electronic cross-connection and test access to individual channels, IN ANALOG OR DIGITAL FORM, from a T1 (DS1). Sounds neat. The FBI says "It can't be done! You have to make it built in!" But it IS built in, they're just not allowed to play with it (or are they anyway?) Life is funny sometimes. I'm going to pause for now, and concentrate on my Sherlock Holmes movie. I'll see if my messages are well received, and pick it up tomorrow.