, cmllparatiN-eh ac.- r_: comparatively secret, suitable and also impressive in such a deN ice I} e m =-= telephone is cor-rrrected with the tnain telephone excliange he e ae=s m are taken from the maintelephoneandisgiven to all in:inrrtar.t defter. From outside Ire st the commurucau on shall be receiN cd o. .1 . m ad r then the operator shall connect it to the desired en tension shall be received. Arrangements can also be ma ie .cr . to another but no direct talk can be i idd' -A
arranged and for this P:it and Telegraph is required tore cr,nt,c. The.- & TDepartulentproN-ides to the of ice ifs cnn exchange h::h . e-_ed be the employee of the erp office. A bran h cxchtnge is esr.-bli-'- xi i- -he erp office and all the moms, departments etc. omit ted Pith id= PUB he -ems elc. are provided extensions and are r is en their e ;i -.-.sicn 1'= her By.- .'; -.!g' recci ed from outside is cot nectcd CN th - i to-- g a- -r m. th. d.- rc cte.t ion Shllilarly a message to be communicated H tlso _ nor uni:utc-d TNiffi the help of PBX operator First. the desired number is gas en to PE;X operator with the request that the number be dialled. When counect-.i dire t talk between the emmected limnber and the extension is arranged. .
PBX ma! be operated either on Chord System or Levcr Switch System.
TELEPHONE: PRIVATE AUTOMATIC BRANCH EXCHANGE (PABX) This is the same as is PBX. The Ally difference between tile two is that here in PABX the services of operator is dispensed NNqth and direct dialling in and outside the erp office is arranged and made possible without the help of the operator it operates automatically
Telotthone: Private Intel commurtication System. This too operates on the saline pritlriples as PBX or PABX operates. Only difference between PIC and the other two is that this one is cent per cent private arrangenueltt. The P T Department has to do nothing here. This is internal and pm ate arrangement. From PIC no outside canununicatlon (to and fro) is possible.
Telephone: R.ttlio-telephone. Whell arrangement is Isolde for telephone message fmtll a moving transport. it is called tadio-telepltQne. In India we have notbeeo able to develop such a tle--ice but in most industrially advanced coirntnes radio-telephone scrN-ices ale available.
CHOICE OF ACOMMUNICATiON SYSTEM
EFFICIENT HANDLING OF erp office WORK 111
2. Isklltiple COP Foruls--Prepared in duplicate. triplicate or as required for tMusmissiotl, distribution etc