3G建网时,会出现一个MSCServer或者MGW内的省内长途呼叫的话务,为了实现对该长途话务的计费管理,可以采用虚拟MSCServer和虚拟MGW的解决方案。()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧