After legal and regulatory victories, Internet voice remains a consumer play, as businesses remain skeptical.

Though Internet voice providers are overcoming some regulatory and legal hurdles, the major barrier standing between them and the mainstream corporate market is still a glaring lack of security, analysts say.

More than 600 VoIP providers in the United States are currently jostling each other for a small but growing slice of the consumer market, but the lush corporate market remains mostly out of reach due primarily to security problems.

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