There is high level R&D team in the company with a relatively completed quality guarantying system and product identifying criteria.

公司拥有高水平的技术开发队伍，已建立起较为完善的质量保证体系，产品检验标准。

There is high level R &D team in the company with a relatively completed quality guarantying system and product identifying criteria.

公司拥有高水平的技术开发队伍，已建立起较为完善的质量保证体系，产品检验标准。

But due to the characteristics of MANET, implementing VoIP services and guarantying its voice quality are faced with many challenging issues.

但是由于无线移动自组织网自身的特点，使得实现IP语音技术并且保证语音质量会面临很多问题。