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Must have equipment on-site
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This is a service provided by the network
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Equipment takes up space, need to pay rent or capital for space
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No Equipment on-site to buy, only telephone sets
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Desk phones generally work with only a manufacture’s PBX system
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Industry standard and can be used with any PBX that supports Industry standards. This standard is the way the market place is headed
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Move, adds and changes (MAC) must be handled by a trained employee or hired
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Must keep phone equipment on-site
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You can take your phone number with you. This phone works just like it did at your office, transfers, voice mail, extension dialing, etc.
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Multiple offices on the same PBX is generally not possible or expensive with lots of limitations
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All offices have the same extension dialing no matter where they are
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Upgrades are expensive
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Included with service
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Phone system must be purchased or leased
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Telephone sets may be part of service, may be leased or purchased
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Multiple offices have multiple voice mail systems that do not work together
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All offices use the same voice mail. You can forward a voice mail to anyone no matter what office they are in
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Generally no web interface for voice mail
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Voice mail can be accessed from the phone or web
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