supply, installation, testing and commissioning of communication / intercom set-up supply, installation, testing and commissioning of communication / intercom set-up , supply, installation, testing & commissioning of supply of 250 users ip pbx up to1000 sip users with 4-year amc after warranty as per the details in the tender document , supply, installation, testing & commissioning of high-end ip phone with 2 dss keys as per the details in the tender document , supply, installation, testing & commissioning of basic ip phone as per the details in the tender document , supply, installation, testing & commissioning of supply of 24 port poe 1000 mbps layer 2 switch with 2 sfp slots with the features of osi layer as per the details in the tender document , supply, installation, testing & commissioning of 10 kva online ups with the 16 numbers of 65 ah battery bank with stand as per the details in the tender document , supply, installation, testing & commissioning of 24 u equipment rack as per the details in the tender document , supply, installation, testing & commissioning of 9 u equipment rack as per the details in the tender document , cat 6 cable bundle/roll as per the details in the tender document , amc for the whole system under this tender (04 years) , installation/ testing/ commissioning and service charges of complete setup , miscellaneous (if any)