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In order to improve the intelligibility and the perceived quality of telephone speech (PSTN),[56, 57] proposed a data hiding technique to extend the PSTN channel bandwidth.
That should read ESPECIALLY the PSTN!
Access regulation has been designed for PSTN and the liberalization of the PSTN market.
LHb, lateral habenula; STN, subthalamic nucleus; PSTN, parasubthalamic nucleus.
The user then spoke with a mobile operator, who actually dialed the call over the PSTN.
The PSTN uses pre-call tones and announcements to provide information on call progress.
SIP-based systems are often going to be connected to PSTN gateways.
The engineering of modems from the Bell 103 to the V.34 standard was based on the assumption that transmission of data over the PSTN meant analog transmission i.e., that the PSTN was a circuit-switched network employing analog elements.
This assumes that the local loop is to be used only for direct access to the long-distance PSTN.
When SITH is connected to a PSTN, the modem communicates at a rate of 33.6 kbps.
This survey identifies the origins of many important building blocks developed especially in connection with PSTN.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com