The present document specifies the technical characteristics (electrical interface requirements) to be provided by Terminal Equipment (TE) to be connected to a 2-wire analogue interface of the PSTN or equivalent interfaces at which network register recall facility is intended to be performed by means of a timed break recall signal@ insofar as they are particular to this signaling function.
ES 201 729-1999由ETSI - European Telecommunications Standards Institute 发布于 1999-11-01,并于 2014-04-02 实施。
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