Cost issues

Article (3)

Justifying VoIP deployment without cost-analysis
VoIP and unified communications deployments remain sluggish, as network managers look for ways to justify the cost of the infrastructure and system upgrades. Non-financial return on investment (ROI) metrics can be used as a way to augment the limited financial measurements available to companies to prove that the shift to VoIP does indeed have business value.
How is average repair time determined for both a TDM PBX and a VoIP system?
I am trying to find some statistics on average time to repair or troubleshoot VoIP and TDM PBX. We heard PBX takes 30 minutes versus VoIP at 4.5 hours -- is this true?
VoIP for SMBs: Cutting edge and cutting costs
Thinking of VoIP? So is everybody else. Yankee Group offers some pointers for cutting through the hype.

Tips (2)

Is SIP really better than HTTP? Follow-up to why use SIP.
In a previous question, I asked why should I use SIP when my application built on HTTP works fine. You replied that SIP provides URL dialing. Yet, so does my application, with better session routing for all packets. Would you please elaborate? Can you give me any idea how much it will cost me to setup a SIP environment in an office, with SIP proxy and registration? How much will a STUN/TURN server cost? How much does heavy client of SIP increase the price of a telephone set?
Six ways VoIP will save you money
In today's digital networked economy, convergence and associated applications like VoIP, have become huge buzzwords as more and more companies look to upgrade their networks to IP.

General Content (1)

Comparing VoIP vendors
For many companies, the tough decision isn't whether to use IP telephony or not -- it's which vendor to choose. We've collected some of Carrie Higbie's tips and tricks for vendor selection, garnered from her "Ask-the-Expert" section. Carrie regularly answers your questions on the topic of "Preparing your network for VoIP." We've included links to her answers about comparing VoIP vendors for further information.

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