Date: Tue, 29 May 2001 00:31:26 -0400 From: Bill Vermillion <bill@wjv.com> To: Colin Campbell <sgcccdc@citec.qld.gov.au> Cc: Laurence Berland <stuyman@confusion.net>, Christophe Prevotaux <c.prevotaux@hexanet.fr>, deepak@ai.net, questions@FreeBSD.ORG, isp@FreeBSD.ORG Subject: Re: OC48 interface Message-ID: <20010529003126.C3968@wjv.com> In-Reply-To: <Pine.BSF.4.33.0105291136060.90725-100000@guru.citec.qld.gov.au>; from sgcccdc@citec.qld.gov.au on Tue, May 29, 2001 at 11:41:09AM %2B1000 References: <3B12CBBE.567B1A8D@confusion.net> <Pine.BSF.4.33.0105291136060.90725-100000@guru.citec.qld.gov.au>
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On Tue, May 29, 2001 at 11:41:09AM +1000, Colin Campbell thus sprach: > Hi, > > Pedant alert! According to the book in front of me (ISP Survival Guide > (Wiley) by Geoff Huston) > The Synchronous Digital Hierarchy > Level US International Mbps > ------------------------------------------------------------- > 1 OC-1 51.84 > 2 OC-3 STM-1 155.52 > 3 OC-9 STM-3 466.56 > 4 OC-12 STM-4 622.08 > 5 OC-18 STM-6 933.12 > 6 OC-24 STM-8 1244.16 > 8 OC-36 STM-12 1866.24 > 9 OC-48 STM-16 2488.32 > 10 OC-192 STM-64 9953.28 > However in the US [I don't know abou elsewhere] there is no OC-1. No OC-9, 18, 34, or 36. You will see OC-3, OC-12, OC-48 and OC-192. There is doubt that the OC-768 will have wide distribution - that about 40Gbs - because it's part of the SONET and TDM methods, it's not going to to see much acceptance. Bill -- Bill Vermillion - bv @ wjv . com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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