Path: utzoo!attcan!uunet!lll-winken!netsys!vector!nobody From: w-colinp@microsoft.UUCP (Colin Plumb) Newsgroups: comp.dcom.telecom Subject: Re: Performance of Interlata Carriers Message-ID: Date: 21 Dec 88 02:56:14 GMT Sender: chip@vector.UUCP Lines: 14 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 206, message 4 One way to do a good test of the various interlata carriers is to get a couple of Telebit Trailblazers and let them measure the noise spectrum. They'll deliver 511 dB readings (to .1 dB, I don't know how much of that is significant) of line noise at about 7.5 Hz intervals, and a 0-100 "line quality index" for lower baud rates. Basically, a (realtively) cheap way of objectively measuring phone line quality. And if you're concerned for data transmission reasons, the mapping onto throughput is direct. If you want to do it seriously, make at least a dozen connections via each of the various carriers, to various places of interest and at various times of day. That should leave you with a feeling for who's best. -- -Colin (uunet!microsof!w-colinp)