Oki OKIFAX 5400 User Manual

Also see for OKIFAX 5400: Service guide Handbook Quick reference Garantie, réglementation et spécifications Référence rapide

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Oki OKIFAX 5400 User Manual Manual pdf 108 page image

102User’s GuideThis apparatus is also approved for use as an extension instrument tocompatible PBXs. The supplier of the apparatus should be consulted for anup-to-date list of PBXs with which this apparatus is compatible.The handset can be used to make “999” calls to the Emergency Services.The second telephone or answering machine must be connected to theTEL 2 jack by means of the two-way adapter provided.The apparatus is suitable for connection to PBXs which return SecondaryProceed Indication. In these situations, please insert pauses between theinitial access digit and the number to be dialled to the PSTN.Series ConnectionNOTE 1The machine causes a voltage drop of 1.35V when passing a PSTN currentup to and including 40mA dc. Do not connect the machine with apparatuswhich, with associated wiring causes the aggregate of the voltage drops toexceed a value of 2V at a PSTN line current of 40mA dc.The 2V level indicates the maximum impairment that may be introducedbetween the terminal apparatus and the Network Terminal Point (NTP) ofa Relevant Branch system (RBS) containing the apparatus.Only one facsimile transceiver should be connected between any seriesconnected apparatus and the PSTN.Difficulties may occasionally be experienced when making calls fromother apparatus connected to the PSTN via the series apparatus. Suchdifficulties may include:i) Difficulty in making callsii Problems in telephone conversion being experienced by both partiesto the calliii Such that any apparatus which forms part of the RBS or is connectedvia it, is so connected that no signals of any kind may be conveyedbetween that apparatus and a PSTN circuit or vice-versa, except bymeans of other apparatus that does not materially affect the electricalconditions presented to one another by that apparatus and the PSTN.Further information is contained in the proposed British Standard for RBSto PSTN lines.