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A modern line card has no two-to-four wire conversion whatsoever; it is strictly an analog/digital interface to a system that has a completely digital and integrated signal path internally. Using actual wires to circuit switch a telephone call became obsolete when the crossbar switch (a mechanical system) was replaced by 4ESS electronic ...
An ICD is the umbrella document over the system interfaces; examples of what these interface specifications should describe include: The inputs and outputs of a single system, documented in individual SIRS (Software Interface Requirements Specifications) and HIRS (Hardware Interface Requirements Specifications) documents, would fall under "The Wikipedia Interface Control Document".
The standard defines a 2-wire 18 gauge wire cable that can run up to 130 feet (40 m) and operates at 9600 bit/s. A message is composed of up to 21 characters, unless the engine is stopped and the vehicle is not moving in which case transmitters are allowed to exceed the 21 byte max message length.
For example, a dispatch center for taxicabs may have an office downtown but have a base station on a distant mountain top. A Tone remote , also known as an EIA Tone remote , is a signaling system used to operate a two-way radio base station by some form of remote control.
Later that year, 2Wire published the Open Gateway Management Protocol (OGMP). [2] The OGMP formed the basis for the TR-069 WAN management protocol subsequently ratified by the DSL Forum in 2004. In early 2003, 2Wire delivered a wireless gateway with a complete system-on-a-chip architecture. Also in 2003, the company acquired Sugar Media, a ...
.xlm – Legacy Excel macro; OOXML Office Open XML (OOXML) format was introduced with Microsoft Office 2007 and became the default format of Microsoft Excel ever since. Excel-related file extensions of this format include:.xlsx – Excel workbook.xlsm – Excel macro-enabled workbook; same as xlsx but may contain macros and scripts
Detailed examples can also be found at here; Syntax for SYLK can be found at: Microsoft SYLK summary (see also the Abusing the SYLK file format article for some useful information) GFF Format Summary: Microsoft SYLK; and at: comp.apps.spreadsheets FAQ; Excel Tips Converting Unix Date Time Stamps; Limits related to reading and saving with Excel:
SBPF is a Synopsys binary format supported by PrimeTime. Parasitic data converted to this format occupies less disk space and can be read much faster than the same data stored in SPEF format. You can convert parasitics to SBPF, by reading them in and then writing them out with the write_parasitics -format sbpf command.