Switching to VoIP

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Business Environment

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Like the budget, you can break the success delta worksheet into smaller ones that

account for a specific department or for a specific phase of the rollout.

Calculate the ROI

Now that you’ve recognized the source of VoIP’s cost and identified its beneficiaries

within your organization, it’s a simple matter to figure out your ROI. This is the rate

at which the new benefits of VoIP balance with its cost. The ROI is your principal

tool in expressing your organization’s rate of return yielded by this technology. To

calculate the time of your ROI, use this formula:

Up-front cost / monthly success delta = months to ROI

Since the up-front investment in Table 8-1 is about $400,000, and your monthly suc-

cess delta is $6,700, it will take your organization about 60 months to complete the

ROI and begin to reap the payback of the project.

$400,000 / $6,700 per month = 60 months

Convenience and Timing

Another question to ask when considering Voice over IP has to do with timing and

logistics. The following are scenarios particularly favorable to a VoIP rollout.

Centrex lines $1,200 $300 $900 Consolidation of soft switches to fewer

demarc locations usually means fewer

phone lines.

Long-distance fees $850 $750 $100 Least-cost-routing using VoIP-over-WAN

can yield a decrease in LD ...