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en.wikipedia.org/wiki/Digital_Signal_3

A Digital Signal 3 (DS3) is a digital signal level 3 T-carrier. It may also be referred to as a T3 ... within its payload. Such circuits are the usual kind between telephony carriers, both wired and wireless, and typically by OC1 optical connections.

www.t1rex.com/ds3.html

Connect that to a wire circuit and its called a T3. By the way, that T3 line is equivalent to 672 voice channels. DS3 and T3 terms are often used interchangeably.

www.ds3today.com/articles/ds3-circuit-t3.php

DS3 Circuits and T3 Lines Defined. How DS3 and T3 work and the new competition from copper and fiber Carrier Ethernet. Companies that have outgrown their ...

www.10gea.org/ip-bandwidth/ds3-line

A DS3 line (sometimes also referred to as T3) is a dedicated, high bandwidth, fiber circuit with a speed of 45 Mbps. This is equivalent to 28 T1 lines (or 672 ...

www.centurylink.com/business/data/private-line-ds3.html

CenturyLink™ T3 Line and DS3 Line Service offers an affordable high-speed digital transport with ... Central Office Multiplexing Provides 28 T1/DS1 Circuits ...

www.lageman.com/bandwidth.htm

DS3, 44.736Mbps, 672 channels (T3). DS4, 274.176Mbps, 4032 channels (T4). DS1 Japan, 1.544Mbps, 24 channels. DS2 Japan, 6.312Mbps, 96 channels.

t1rex.blogspot.com/2011/09/what-is-ds3-circuit-or-t3-line.html

Sep 9, 2011 ... Companies that have outgrown their T1 lines often upgrade to DS3 bandwidth. Let's take a look at what DS3 has to offer, how it relates to T3 ...

ongoingoperations.com/2013/01/14/t1-vs-ds3

Jan 14, 2013 ... To start – both T1's and DS3 are legacy telecom products and require ... Either way, bonding circuits together is a good way to increase ...

portal.adtran.com/web/page/portal/Adtran/group/3023

The MX3112 is a cost-effective platform designed to provide Ethernet transport over an existing point-to-point DS1 or DS3 circuit. Four integral Ethernet ...

internet-access-guide.com/t1-t3-ds3-oc-bandwidth-speed

Mar 29, 2011 ... DS3 is also known as Digital Signal Level 3 and is synonymous with the ... Once you connect the DS3 line to a circuit this is known as a T3 line ...