错误具体提示信息: | |
这篇文档需要 注册会员 才能访问,你目前是:游客或没权限会员 ! | |
文档标题: | Roaming |
发布时间: | 2012-09-05 20:53:14 |
文档简介: | Need for cooperation The world is changing towards one where both people and organisations need to communicate across wider regions than before and that is setting new requirements to the interoperability of communications systems. Europea |