These vendors say the potential cost savings--which come from not requiring a local or long-distance phone call--may be what first attracts customers, but that it is only part of the story.

• 这些供应商称，潜在的节省成本（这是不需要打本地或长途电话而节省下来的）可能是第一个吸引客户之处，但这只是其中的一个好处。