From Softswitch: Architecture for VoIP

Net Present Value When Softswitch Generates Greater Revenue

According to Laura Thompson, Vice President of Marketing and Channels at softswitch vendor Sylantro (, a softswitch-enabled service provider could enjoy up to 25 percent greater revenue by virtue of offering high-margin calling features that a Class 4 or 5 service provider cannot offer. The following net present value model will determine if a higher net present value is achieved where the softswitch-enabled service provider is enjoying revenues greater than that of the Class-4-equipped service provider. Table 11-34 outlines the costs and benefits when softswitch generates 25 percent more revenue than Class 4, while Table 11-35 shows the NPV when softswitch generates 25 percent more revenue than Class 4.

Table 11-34: Costs and benefits when softswitch generates 25% more revenue than Class 4

Income tax component

Class 4


Gross income



Business expenses



Taxable income before depreciation and/or capital gains






Salvage value



Book value



Difference salvage value versus book value



Tax on capital gains (20% of above)



Income tax

$26,851,886(.35) = $9,398,160


Profit after taxes and expenses



Table 11-35: NPV when softswitch generates 25% more revenue than Class 4

Class 4 NPV with OCC at 12%, 10%, and 7%

Softswitch NPV with OCC at 12%, 10%, and 7%

NPV = ($17,453,726)(1.6901) - $1,085,000 = $28,413,542

NPV = ($22,330,620)(1.6901) - $225,000 = $37,515,980

NPV = ($17,453,726)(1.7355) - $1,085,000 = $29,205,941

NPV = ($$22,330,620)(1.7355)...

Products & Services
Video Cameras
Video cameras record live-action scenes that are available for viewing via a stored or transmitted video feed. This allows the user to create a permanent and detailed chronicle of events. Video cameras record dozens of pictures (or frames) a second that when viewed in succession, clearly distinguish the translation of an object or person over time.
UV Cameras

UV cameras are video cameras that record images in ultraviolet radiation by the use of a UV-pass filter, a quartz lens, a CCD image sensor, and specialty illumination techniques.

Smart Cameras
Smart cameras are stand-alone camera systems that contain an image sensor, integrated processor, and communication interface. They can be programmed for machine vision, security, and other imaging applications.
GPIB Converters
GPIB converters translate data from the GPIB bus to another bus type, and vice versa. For instance, an RS232-to-GPIB converter translates serial commands generated by the RS232 interface into GPIB commands.
High Speed Cameras
High speed cameras are video cameras manufactured with an emphasis on extreme frame rates. This allows for the slow-motion analysis of fleeting details and motion that would not be observable with a standard video camera. These cameras find their most meaningful use in scientific and industrial settings.

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