DS3 bandwidth can reach speeds of up to 45 Megabits per second on both upload and download. It can both upload and download simultaneously without speed loss.
A DS3 can do 45Mbps Bidirectional Simultaneously.
There is no direct mapping of E1 to DS3. The only way to connect the two is using an MPLS network. A DS3 is 45Mbps. An E1 is 2Mbps. The bandwidth of 22.5 E1's can traverse a DS3. In order to directly connect an E1 as would a T1 to a DS3 you would need an E3 An E3 is 34 Mbps and 16 E1's could connect to it.
There is no direct mapping of E1 to DS3. The only way to connect the two is using an MPLS network. A DS3 is 45Mbps. An E1 is 2Mbps. The bandwidth of 22.5 E1's can traverse a DS3. In order to directly connect an E1 as would a T1 to a DS3 you would need an E3 An E3 is 34 Mbps and 16 E1's could connect to it.
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
Developed in the 1950's for use by the telephone companies, the T1 line is the basic digital line service for business applications. It has a fixed 1.5 Mbps bandwidth in each direction. That bandwidth can be allocated to network data, converged VoIP and computer data, or segregated into 24 individual standard telephone channels. If you need more bandwidth, T1 lines can be bonded to create typically 2x to 9x the individual line capacity. Usually higher bandwidth needs that these are assigned to DS3 circuits at 45 Mbps for cost reasons. However, in remote locations where there is no installed DS3 service, it might be cheaper to install multiple bonded T1 lines to get the required bandwidth. T3 bandwidth provides data transfer speeds of 45 megabits per second (mbps) and contains 672 individual channels that are each equal to voice grade telephone lines, capable of transmitting online video shoots, real time video, and large databases over a busy network. T3 bandwidth is by and large, used in large universities and companies that have large number of users in the same network.
DS3 is 44.7 Mbps and a T1 is 1.55 Mbps. So 1 DS3 = 28 T1s http://www.dslbroker.com/ds3.html
A DS3 has 28 T1's http://techblog.intelletrace.com/what-is-a-ds3-hub/
3 ds3 in stm1
how many DS3's are in an OC192
an OC48 has 48 DS3's.
672 DS0 make 1 DS3
T3 is the same as DS3. DS3 is a 45Mbps Data Circuit