Audio Communication System - Industrial Telephone with built-in Page Amplifier This system consists of an Epabx unit located in the control room. All the field industrial telephones have built-in page amplifier and are provided with a noise cancelling type handset. These are connected to the EPABX unit. 230 V AC power supply is extended to the EPABX unit. The field operator lifts the handset and dials the required extension number. The input stage senses the incoming call and shifts the line to page amplifier board. The ring back stops and the calling party makes the paging announcement through his telephone. This announcement is amplified in the particular field call station (FCS) and heard through the page loudspeaker connected to it. If the called person picks up the FCS handset while the announcement is in progress, then the calling and called persons get connected for conversation in pvt. Mode. In case the calling person disconnects the line after making the page announcement, the called person can dial the no. of the earlier caller from any FCS, make a page announcement and proceed to talk to him. The master operator can, through the operator console 1). Access all the field call stations individually 2). Make zone wise page announcement 3). Make all zone announcement. The Field Operator of any FCS can 1). Make a page announcement to individual FCS 2). Make zone wise page announcement (except the zone in which the particular FCS is included) 3). Make all-zone page announcement (except the zone in which the particular FCS is included) Other standard features of a digital system are available in this epabx system. Pricing Details : 1). EPABX Unit - 25 Extensions - 1 No. - Rs.2,00,000=00 each. 2). Indl. Telephone with Built in Page Amplifier - Elixir Model: ETU8000HS - Qty as Reqd - Rs.20,000=00 each. 3). Zone Selector Unit - 1No. - Rs.50,000=00 each. 4). Desktop Telephone (commercial version) Amplifier & Speaker - Qty as Reqd - Rs.20,000=00 each. 5). Telephone cables - 2 pair, 5 pair, 10 pair, 20 pair etc. - On request 6). VAT Extra.