First you need to decide what you need it for. internet, Point to Point or MPLS.
If it is Internet you need to decide how much of the bandwidth you want to commit to. The more you commit to the less per Mb you pay.
You can contact a carrier or a wholesaler directly.
Here are some bog's.
techblog.intelletrace.com
ceoblog.intelletrace.com
Intelletrace.com can be your carrier to manage this entire process.
415-493-2200 (Fastest Answer)
sales@intelletrace.com
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.
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/
A DS3 can do 45Mbps Bidirectional Simultaneously.
3 ds3 in stm1
how many DS3's are in an OC192
A DS3 is a telecommunications circuit capable of transmitting and receiving 45 Mbps at the same time. A DS3 is generally delivered using an OC3 or higher capacity circuit then is muxed out to a DS3. A DS3 hands off as two 75Ohm coax cables.DS3 Cable Type734 Cable = 450 Feet (137.2M) RG59 Cable = 340 Feet (103.6M) 735 Cable = 225 Feet (68.8M) You can order this type of service from Intelletrace.com 415-493-2200
672 DS0 make 1 DS3
an OC48 has 48 DS3's.
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.
T3 is the same as DS3. DS3 is a 45Mbps Data Circuit
T3 is the same as DS3. DS3 is a 45Mbps Data Circuit