nanog mailing list archives
Re: Anyone familiar with the SBC product lingo?
From: Matthew Crocker <matthew () crocker com>
Date: Thu, 14 Apr 2005 17:54:32 -0400
SONET Circuit Service OC3-c (155Mbps) $2200 vs. Central Office Node Circuit Service OC3/3c (155Mbps) $675
SONET is a method of transporting TDM channels over fiber. SONET is made up of building blocks calls a STS. A STS is equivalent to a DS-3 + SONET Wrapper. An OC-3 equals 3 STSes. OC-3s come in two types, 'channelized' OC-3 which is 3 DS-3s in 3 STSes and Packet Over SONET (POS), concatenated OC-3c which is 155mbps. If you are planning on using this circuit for TDM based voice (84 T1s in 3 DS-3 chunks) then you will want an OC-3 not an OC-3c. If you are planning on running 155mbps POS IP traffic you want an OC-3c.
OC-3 = 3 x STS-1 = 3 x DS-3 = 3 x 28 DS-1s, 84 DS-1s = 2016 DS0 voice channels.
OC-3c = 1 x STS-3 = 155mbpsYou can use an Adtran OPTI-3 to break an OC-3 into 3 distinct DS-3 channels which can be plugged into M13 muxes (Carrier Access Widebank 28) which will break a DS-3 into 28 DS-1s.
If you want IP bandwidth you can use an OC-3 POS line card from your router vendor of choice.
-Matt
Current thread:
- Re: Anyone familiar with the SBC product lingo?, (continued)
- Re: Anyone familiar with the SBC product lingo? Michael . Dillon (Apr 15)
- Re: Anyone familiar with the SBC product lingo? jmalcolm (Apr 16)
- Re: Anyone familiar with the SBC product lingo? Michael . Dillon (Apr 18)
- Re: Anyone familiar with the SBC product lingo? Jerry Pasker (Apr 14)
- Re: Anyone familiar with the SBC product lingo? Justin M. Streiner (Apr 14)
- Re: Anyone familiar with the SBC product lingo? David Lesher (Apr 15)
- N+? redundancy Michael . Dillon (Apr 15)
- N+? redundancy jmalcolm (Apr 16)
- Message not available
- Re: Anyone familiar with the SBC product lingo? Jay R. Ashworth (Apr 17)
- Re: Anyone familiar with the SBC product lingo? just me (Apr 17)
- Re: Anyone familiar with the SBC product lingo? Bill Stewart (Apr 14)
- RE: Anyone familiar with the SBC product lingo? Michael . Dillon (Apr 15)