NEBS认证普遍被美国电信运营商所要求，客观上是电信设备进入美国市场的通行证。该认证从安全、电磁兼容和环境可靠性等方面对电信设备提出了严格要求。
NEBS certification is required by most of the telecommunications carriers in America, and becomes the passport for telecommunication equipments for which want to entry the American market.
美国的电信运营商对用户的哪种手机可以使用手机网络的管制更加严格。
Carriers in America have far greater control over which handsets people can use on their networks.
要求任何一个美国四大电信运营商建立短信通道代码并不简单。
It's not as simple as calling one of America's big four carriers and setting up a short code.
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