A T1 is copper, and OC3 is fiber optic, so there is no way to make a T1 into OC3.
Speed on a T1 is 1.544 Mbps, and speed on the OC3 is 155.52 Mbps, so in rounding, you need 100 T1 lines to equal the speed of an OC3.
An OC3 can be Muxed down to 3 DS3's a DS3 is also known as a T3.
An OC3 is equivalent to having 84 T1 lines.
An OC12 is equal to 4 OC3 bandwidth connections.
There are 3 DS3's in an OC3. Generally an OC3 or higher capacity circuit will be used to deliver a DS3 due to distance limitations of the DS3. http://www.intelletrace.com/internet-services/OC3-Internet-Services.html www.intelletrace.com Wholesale Internet for Business
Irlpa t1s.
There are three, known as STS-3.
There are 28 T1 carrier lines in a T3 connection.
An OC3 breaks down to three DS3's. A DS3 Breaks down to 28 T1's. Therefore there are 84 T1's on an OC3. If you go one step further there are 672 DS0's on a DS3 or 2016 DS0's on an OC3. a DS0 is a 64k Channel equal to a single POTS line. http://techblog.intelletrace.com/what-is-a-ds3-hub/
The rate that an OC3 can move data is at 155Mbps. For more answers go to. http://www.intelletrace.com/internet-services/OC3-Internet-Services.html
Ten T1s
DS3 is 44.7 Mbps and a T1 is 1.55 Mbps. So 1 DS3 = 28 T1s http://www.dslbroker.com/ds3.html
A channelized DS3 is also a DS3 Hub. Details can be found here. http://techblog.intelletrace.com/what-is-a-ds3-hub/ Summary: A Channelized DS3 supports up to 28 DS1's using M13. Originally, DS3's were used for aggregating T1s. Imagine 28 T1s, all terminating at a CO, but originating at 28 different locations at varying distances from the CO. Because the T1s are not related, they may be out of sync with each other. The original designers knew that this was a probability, so they designed the first stage of the multiplexing process to deal with the problem. The speed of a T1 is generally reported as 1.544 Mbps. If you multiply 1.544 Mbps * 4, you get 6.176 Mbps. Why, then, is a DS2, which is four T1s, shown as 6.312 Mbps? To compensate for T1s that are not delivering bits in a timely manner (+/- 77 Hz), the M12 multiplexer stuffs bits into the signal to get them up to speed with the other T1s in the group.
The base rate of an OC-3 would be 155Mbps. www.intelletrace.com
An OC3 is delivered to you using Single Mode Fiber. There is equipment needed on site including power provided at the customer prem. This is a SONNET based service. For proper redundancy there should two points of entry and two separate paths to your location. if not, it is considered a Collapsed Ring. www.intelletrace.com