Description :
Tenders for Annunciator Multiway Telephone Exchange 10 Lines With Wooden Box: Specification (a) Gene Ral (i) No Of Extension 5/10 (ii) Minimum No Of Extension In Conference-3 (iii) Power Supply Requirement 12 V Dc, 1 (b) Speech-send Output @ 5mv More Than 774 Mv, Side Tone Suppression @5mv Less Than 100mv, Receive Output @193 Mv More Than 100 Mv (c) Calling System-output Voltage In Open Condition More Tha N 80v Ac, Output Voltage Under Load Condition More Than 28v Ac, Frequency @ 25 Hz. Or With Better Speci Fication, Suitable For Hand Generator Type Magneto Telephone As Per Rdso Specification No. Irs:tc-36/97 [ Warranty Period: 30 Months After The Date Of Delivery ]
