Specifications include, but are not limited to: provide 24 x 7 proactive network monitoring, trouble isolation, resolution to include the repair and/or replacement, (at no cost to APS), for all network elements, including, but not limited to the applicable components below: 1. All proprietary Mitel hardware and software components in Appendix H. including the existing voicemail integration with XMedius CallXpress voice messaging system. 2. Software assurance for all components and with associated 24 x 7 support from Mitel Networks. 3. All leased services from Verizon, including, but not limited to SIP/VOIP, T-1, FIOS, DSL, Potts Lines. 4. UPS systems and associated battery packs. 5. All telephone sets 6. Telephony Routers, Modems, DSUs, etc. 7. All Mitel wireless headsets