| [SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] maintaining call quality 2nd performance factors 2nd SLAs 2nd SLQoSAs 2nd high availability 2nd application management monitoring servers 2nd 3rd 4th maintaining critical files call routing tables configuration files 2nd program files 2nd 3rd 4th managing availability 2nd application management monitoring servers 2nd 3rd 4th managing VoIP outsourcing 2nd application integration integrator selection criteria 2nd 3rd 4th MSP selection criteria 2nd 3rd MSPs network tuning 2nd PBXs performing network upgrades 2nd pilot deployments 2nd toll bypass troubleshooting 2nd VoIP-readiness assessment managing VoIP operations configuration management maintaining critical files 2nd 3rd 4th 5th 6th 7th 8th 9th network inventory 2nd network topology, mapping 2nd event management 2nd 3rd fault management 2nd 3rd measuring benefits of VoIP 2nd convergence 2nd cost savings 2nd 3rd 4th 5th 6th 7th hard benefits new features 2nd 3rd 4th 5th productivity savings 2nd soft benefits data loss obstacles to VoIP business risks 2nd cost investment 2nd SLAs 2nd measuring call quality 2nd 3rd 4th 5th 6th Megaco (Media Gateway Control) Metcalfe, Bob metrics incident tracking selecting for SLAs 2nd availability 2nd call quality 2nd call setup performance 2nd metrics (QoS) selecting 2nd 3rd 4th modulation PCM monitoring servers 2nd 3rd 4th SLAs 2nd Moore, Geoffrey A. MOS measuring call quality MOS (mean opinion score) MPLS MSPs MSPs (managed service providers) MTBF (Mean Time Between Failures) MTTR (Mean Time to Repair) multiplexing |