ETSI - PRETS 300 116
Terminal Equipment (TE); Attachments to the Public Switched Telephone Network (PSTN); Category II Attachment Requirements for 1 200 Bits per Second Duplex Modems Standardized for Use on the PSTN Second Edition
|Publication Date:||1 January 1995|
This ETS contains the technical characteristics required for end-to-end interworking over the Public Switched Telephone Network (PSTN) of 1 200 bits per second (bit/s) duplex modems standardized for use over the in accordance with CCITT Recommendation V.22 .
NOTE: CCITT Recommendation V.22  also describes a method of transmitting data at 600 bit/s. This ETS specifies the characteristics to be met by such modems and, if requested by the applicant, this feature can also be tested against the specifications.
The term "modem" in the context of this ETS includes all physical implementation practices for a voice band modem which is conductively connected to the PSTN.
This ETS specifies four modes of operation each with up to five modes of use (see subclause 5.2).
This ETS also contains descriptions of the tests to be performed in order to confirm compliance with the functional requirements contained herein. A general description of the test conditions and test requirements is given in annex A (normative).