And while Seoul is relatively easily navigable for non-Korean speakers, the nation still has poor tourism infrastructure, notes Kim Soo-yong, a manager handling inbound sales at Seoul-based Hanjin Travel.

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This can be your inbound 800 number, your outbound sales calls, or your product fulfillment services.

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Though inside sales frequently involves an element of inbound call handling like a customer service department, in its pure form it is not customer service.

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Now TeleTech is trying to diversify its revenues from responding to inbound customer calls, 90% of today's sales, to more back-office services.

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