SONET simply means you are on a Sonet ring: Two redundant connections to the central office. If someone gets a little crazy with a backhoe your line is guaranteed to stay up (ask about SLAs, and make sure they will refund part of your monthly bill if you have an outage). That's why it costs over twice as much. I would imagine the other service is just a point-to-point connection, subject to the same type of reliability you would get from any point-to-point connection. Hope this helps. -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Dan Lockwood Sent: Thursday, April 14, 2005 3:59 PM To: nanog@merit.edu Subject: Anyone familiar with the SBC product lingo? Hi All, I'm trying to get some pricing on an OC-3 that we will be using for voice. We already have a master agreement with SBC for our services. I have the feeling that we are being "oversold" services and/or sold services that are not required for what we need to accomplish. Not doing this everyday, I'm confused about the "Feature Name" of things like: SONET Circuit Service OC3-c (155Mbps) $2200 vs. Central Office Node Circuit Service OC3/3c (155Mbps) $675 Anyone that is knowledgeable about SBC lingo, please feel free to ping me. If you have experience with OC3s even better! ;) Thanks! Dan