From owner-stds-802-3-hssg@ieee.org Mon Feb 28 23:47 GMT 2000 Received: from gatekeeper.pdd.3com.com (gatekeeper [161.71.169.3]) by isolan.pdd.3com.com (8.9.1b+Sun/8.9.3) with ESMTP id XAA11132; Mon, 28 Feb 2000 23:47:07 GMT Received: from ruebert.ieee.org ([199.172.136.3]) by gatekeeper.pdd.3com.com (Netscape Messaging Server 3.6) with ESMTP id AAA8AC; Mon, 28 Feb 2000 23:45:26 +0000 Received: by ruebert.ieee.org (8.9.3/8.9.3) id RAA09531; Mon, 28 Feb 2000 18:00:11 -0500 (EST) Date: Mon, 28 Feb 2000 14:54:23 -0800 (PST) From: Howard Frazier Message-Id: <200002282254.OAA03768@agate.cisco.com> To: kardontchik.jaime@ulinear.com, stds-802-3-hssg@ieee.org, jrrivers@cisco.com Subject: Re: PAM-5, what are your BERs ? X-Sun-Charset: US-ASCII Sender: owner-stds-802-3-hssg@ieee.org Precedence: bulk X-Resent-To: Multiple Recipients X-Listname: stds-802-3-hssg X-Info: [Un]Subscribe requests to majordomo@majordomo.ieee.org X-Moderator-Address: stds-802-3-hssg-approval@majordomo.ieee.org Content-Type: text Content-Length: 473 X-Lines: 16 Status: RO 100BASE-T4 specifies a ternary symbol error rate of less than one part in 10^8. My recollection is that we didn't feel compelled to do any better than 10BASE-T, which has a BER objective of less than one part in 10^8. I also recall that the BER objective for FDDI-TPPMD and 100BASE-TX is 2.5 x 10^-10. We had the same BER objectives on fiber and copper. Gigabit Ethernet specified 10^-12 because that's what Fibre Channel claimed. Howard Frazier Cisco Systems, Inc.