supply of 19 inch rack mountable , 19 inch rack mountable; 1u height integrated access device consisting of four e1 channels 1 20 ohms supporting cross connect features and three tributary slots and one slot populated with eight port 2w/4w module supporting gain/ loss features, 2w/4w configurable through dip switches and with four pote ntial free contacts to link with data logger to know the status of e1 channel, unit to support four snmp. port s 10/100mbps; unit to support dc power supply; 18 to 72v dc and ac vide adaptor one number provided; unit configuration to be done vide snmp port or telnet only model: fabio 4c; make: team engg / lantana /rad or similar . [ warranty period: 12 months after the date of delivery ] ]