Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!swbatl!texbell!vector!telecom-gateway From: CB06049@uafsysb.bitnet (Colin Byers) Newsgroups: comp.dcom.telecom Subject: 7 khz Technology for ISDN Message-ID: Date: 6 Oct 89 19:41:05 GMT Sender: news@vector.Dallas.TX.US Lines: 18 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 434, message 6 of 7 I have been reading in the Sept 25, 1989 Communications Week on page 74 about the latest sound improvement for ISDN from AT&T. My questions are: 1) How does making a 7khz signal improve the sound quality ? (I know about bandwidth but thought someone could go into more depth than the article covered...) 2) Why is getting a switched 56-kbps line so expensive relative to say a 64-kbps line? 3) What difficulties are preventing Bell from implementing this? Thanks again, Colin Acknowledge-To: