tender for the supply of ip phones to iim tiruchirappalli supply of ip phones to iim tiruchirappalli , minimum specification: supply, installation, testing & commissioning of ergonomic hearing aid compatible ip based avaya telephone/handset that supports ttd acoustic coupler, message waiting indicator, mute indicator with optional mute alerting, ic call alerting with 360-degree visibility, rich, classic, alternate, and downloadable ringtones, dual-position stand, optional wall mount stand, gigabit ethernet (10/100/1000) line interface, second ethernet interface 10/100/ 1000 mbps, poe class (ieee 802.3af) registers as class 1 device and supports 802.3az, optional ac to 5 volt adapter, order custom bezels/faceplates, sip & h.323 protocol support, standards-based codec support: g.711, g.726, g.729a / b, g.722, opus. the proposed ip phones must be fully compatible with our existing avaya ippbx system and integrate seamlessly with the current ippbx server (make: avaya, model: r630, firmware versions: current firmware 11.1.3.0.0 build 23). the vendor shall provide all necessary licenses required for integration with the existing r630 avaya ippbx.in addition, any firmware or version upgrades required to achieve full compatibility and seamless integration must be carried out by the vendor at no additional cost to the purchaser.