Glossaries

• Digital Access Cross-Connect System (DACS)
• Also called a digital cross-connect system (DCS). A piece of circuit-switched telephone equipment that can switch any T1 line to any other one line in the system, often automatically in a time of failure.
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• Data Communication Channel (DCC)
• A channel in charge of data communication in SONET/SDH networking.
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• Data Circuit-terminating Equipment (DCE)
• Devices such as a modem or interface card that connect the user to a communication channel.
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• Dispersion Compensation Module (DCM)
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• Digital Cross-connect System (DCS)
• Also called a DACS, Digital Access Cross-connect System. A piece of circuit-switched telephone equipment that can switch any T1 line to any other one line in the system, often automatically in a time of failure.
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• Dual In-line Package Switch (DIP)
• Small manual electric switch on a device that can used to change a setting. These are used on printed circuit boards to quickly and easily change settings. While not in use much in recent consumer products (due to software and the lower cost of memory), they are still prevalent in industrial electronics. The main advantage is that settings can be easily viewed and quickly changed without powering on the device.
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• Digital Loop Carrier (DLC)
• A method that digitizes the voice data over a telephone network and thus allows it to use existing copper infrastructure without worrying about traditional analog problems such as impedance and attenuation.
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• Degraded Minute (DM)
• A 60 second long group of time in which the estimated error rate exceeds 1e-6 but not 1e-3.
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• Digital Signal, Level 0 (DS0)
• 64 Kbps, corresponding to the capacity required for a single digitized voice call.
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• Digital Signal, Level One (DS1)
• Same as T1. DS1 is the time division multiplexing of 24 DS0 signals to create a capacity of 1.544 Mbps.
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• Data Service Unit (DSU)
• Adapts the physical interface on a DTE to a transmission channel such as E1 or T1. Responsible for signal timing and synchronization.
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• Digital Signal Cross connect (DSX-1)
• A place where DS-1 signals are connected, typically at a central location.
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• Data Terminal Equipment (DTE)
• End user device such as a PC or workstation at the end of a communications network. Often communicates over a DCE such as a modem. Serves as a data source, destination, or both.
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• Dense Wavelength Division Multiplexing (DWDM)
• The Wavelength Division Multiplexing technology can multiplex up to 96 lambda but is more difficult to deploy and more expensive. Loop Telecom supports the Lambda DWDM of the C-Band solution with 8 or 16 lambda per filter. We propose the solution with 100GHz or 0,8nm channel spacing proposed. This technology gives the possibility to amplify the signal with EDFA Booster, Preamplifier and Raman amplifier.
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