bids are invited for custom bid for services similar category annual maintenance service - epabx system comprehensive amc for hipath 4000 (epabx) system at niot campus hipath 4000 system with the following, comprehensive amc for siemens make hipath 4000 v6 (duplex) system with the following configuration, 1. 02 port pri card (diut2-60 channel) – 01 no. 2. 24 port digital extension card (slmo24) – 01 no. 3. 24 port analog extension card (slmav24) – 30 nos. 4. 08 port analog trunk card (tmani)– 02 nos. 5. ip gateway card (stmi4) – 01 no. 6. xpression server application – 01 no. 7. open stage 40t digital phone – 02 nos total quantity :