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Unlimited per-seat plan: You'd prefer an unlimited, per-seat plan where phones are used heavily for contacting customers and others not on your hosted phone system.
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Per-seat pricing: If your service lets you add extensions for your three heavy months and drop them after that, per-seat pricing is the way to go.You might also prefer metered pricing when your phone usage has seasonal spikes and valleys. Metered based pricing: You'd prefer a metered, usage-based pricing scheme where many phones are lightly used say, where conference room phones are common, or where most business communication tends to be email or inter-office.Some prices require a year-long commitment, but others are month-to-month or by unlimited vs. VoIP service providers offer varying pricing structures.
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