Path: utzoo!utgpu!watmath!clyde!att!osu-cis!killer!vector!nobody From: "Joseph_J._Gerber.henr801E"@Xerox.COM Newsgroups: comp.dcom.telecom Subject: Some testing done on switched 56kbs Message-ID:Date: 5 Dec 88 15:58:58 GMT Sender: chip@vector.UUCP Lines: 20 Approved: telecom-request@vector.uucp X-Submissions-To: telecom@bu-cs.bu.edu X-Administrivia-To: telecom-request@vector.uucp X-TELECOM-Digest: volume 8, issue 195, message 8 BRIAN: I AM NO EXPERT ON SWITCHED 56KBS BUT MY GROUP TESTED IT IN 1987 FROM ROCHESTER N.Y. TO CHICAGO AND SANTA ANA, CALIF. BASICALLY YOU NEED A DEDICATED 56KBS FROM YOUR SITE TO THE CLOSEST CO WHICH SUUPORTS SWITCHED 56KBS. THE SERVICE IS DIGITAL 56KBS A T1 IS NOT REQUIRED. FACILITY IS READILY AVAILABLE EXCEPT WHEN AT&T HAS MAJOR OUTAGE ALONG THE NETWORK. FOR EXAMPLE WE LOST ALL CKTS GOING WEST BECAUSE SOMEBODY DUG UP FIBER CABLE ALONG RIGHT AWAY OR AT&T LOSES REPEATER STATION ALONG ROUTE. THEN ALL TRAFFIC GOES ON PRIORTIY ROUTING W/ HOSPITALS, MILITARY, POLICE AND AT&T GETTING CAPACITY BEFORE US PAYING CUSTOMERS. AS A BACKUP CHANNEL WE OPTED FOR SATELLITE. IF YOU NEED EXCESS CAPACITY FROM TIME TO TIME I THINK IT'S FINE. IF YOU ARE LOKKING FOR CONTINGENCY CAPACITY DURING MAJOR CIRCUIT OUTAGES, FIND A DIFFERENT FACILITY AT&T RUN SWITCHED 56KBS ALONG SIDE EVERYTING ELSE, PROBABLY A MUXED T3.