Domestic calling: Unlimited calls to 48 states and Canada is now the norm for traditional consumer land and mobile plans, and that's the case with VoIP.Overseas calling: Calls to overseas locations of your business make a great case for getting those remote workers on your system, even if they only use softphones (VoIP applications) on desktop or mobile for interoffice calling.Pay attention, too, to per-minute charges that accrue whether you make or receive the call. If a lot of your traffic is off-net and overseas to specific countries, look for VoIP service providers who include these countries within their unlimited calling plan, or find a provider with low rates to those countries. In all instances, calls between extensions, even if that extension is used by a remote worker, stay on-net, and therefore should not add anything to your costs. 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.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.

Extension phones for voip service