Chat in Gmail already features video and voice chat, but the file transfer feature is currently still missing.

Gmail中的聊天功能已经支持视频和语音聊天，但目前还不支持文件传输。

youdao

Because of the limitation of CPU, memory and bandwidth resource of the server, the quality of video and voice in conferencing gets worse quickly when the number of clients increases.

由于视频服务器的CPU、内存、网络带宽的资源有限性，当用户数目增多时，音视频的质量急骤下降。

youdao

Within the first six weeks of its initial release, 1.5 million users had downloaded the software, which allows video and voice calls, instant messages and file transfers to be made over the Internet.

Skype公司发布了一款软件，能够使用户通过网络进行视频和音频电话、即时聊天和文件传输。在软件首发后的六周内，就有150万用户下载了该软件。

youdao

Even with budget outlooks getting cloudier, civilian, intelligence and military agencies face unrelenting pressure to improve and secure the way they communicate with data, video and voice.

FORBES: Magazine Article

The application, from video and voice conferencing provider Polycom, is being billed as the next stage in mobile video communications, a step beyond popular apps like Skype and Qik.

FORBES: Tablets Get High Definition 'Telepresence' Mobile Chat

Certified as the first Ultrabook optimized for MS Lync, the HD face tracking camera and dual array microphones ensure high quality video and voice track capability without the need to use USB peripherals.

ENGADGET: Lenovo announces the ThinkPad X1 Carbon Touch, available now for $1,399 and up