PRETS 300283 : DEC 92
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
BUSINESS TELECOMMUNICATIONS (BT); PLANNING OF LOUDNESS RATING AND ECHO VALUES FOR PRIVATE NETWORKS DIGITALLY CONNECTED TO THE PUBLIC NETWORK
04-01-1994
01-12-2013
Relates to Private Branch Networks (PBNs) with a digital access to the ISDN/PSTN with a fully 4-wire call path between the Network Connection Point (NCP) and International Switching Centre (ISC). Applies to call paths between the NCP and the terminal in the PBN that sets up or answers the call. Does not contain a compliance test specification. Quotes limits that will ensure satisfactory echo and loudness performance. Does not apply to configurations where a part of the transmission path between the terminal and the public network contains a segment that incorporates a mobile radio or cordless radio transmission link.
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