A Digital Signal 3 (DS3) is a digital signal level 3 T-carrier. It may also be referred to as a T3 line. Two Network Interface Units, one with a single card, the other with two In telecommunications, T-carrier is the generic designator for any of several digitally multiplexed telecommunications carrier systems originally developed by Bell Labs and used in North America and Japan. ...
The data rate for this type of signal is 44.736 Mbit/s.
This level of carrier can transport 28 DS1 level signals within its payload.
This level of carrier can transport 672 DS0 level channels within its payload.
Digital signal 1 (DS1, also known as T1, sometimes DS-1) is a T-carrier signaling scheme devised by Bell Labs. ... In T-carrier systems Digital signal 0 (DS0) is a basic digital signaling rate of 64 kb/s, corresponding to the capacity of one voice-frequency-equivalent channel. ...
Cabling
DS3 interconnect cables must be made with true 75 ohm cable and connectors. Cables or connectors which are 50 ohm or which significantly deviate from 75 ohms will result in reflections which will lower the performance of the connection, possibly to the point of it not working. Bellcore standard GR-139-CORE defines type 734 and 735 cables for this application. Due to losses, there are differing distance limitations for each type of cable. 734 has a larger center conductor and insulator for lower losses for a given distance. The BNC connectors are also very important as are the crimping and cable stripping tools used to install them. Trompeter, Cannon, Amphenol, Kings, Canare are some of the true 75 ohm connectors known to work. RG6 cable will also work, though it does not meet telephony technical standards.
Usage
The level of transport or circuit is mostly used between telephony carriers, both wired and wireless. This article or section is in need of attention from an expert on the subject. ...
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