Voice over IP (VoIP) defines a way to carry voice calls over an IP network including the digitization and packetization of the voice streams. IP Telephony utilizes the VoIP standards to …

Cisco IP Phones change the communications experience, adding new collaboration modes to VoIP, such as HD voice, video, conferencing, and wireless.

思科 IP 电话在 VoIP 中加入新的协作模式（如高清语音、视频、会议和无线模式），为您带来全新的通信体验。

Cisco IP Phones are a portfolio for communication systems that include full featured VOIP, HD voice, video, conferencing, and wireless.

Select IP Phone 8800 Series models support up to 1080p HD desktop video collaboration, telephony feature integration with personal mobile devices.

Get a full-featured cloud communications solution on any device, anytime and anywhere. Join with our Cisco Webex VoIP and video phones to meet a range of needs with new collaboration …

2015年10月2日 · Cisco's Unified Communications Manager (Cisco UCM) is an IP-based communications system that supports voice, conferencing, video, data, instant messaging and …

2018年7月30日 · 本章介绍了VoIP信令及媒体传输与传统语音线路的区别，并介绍了语音信号是如何通过IP网络进行发送的，这个过程包括从模拟信号到数字信号的转换、加密、封包。

2019年3月1日 · With software releases 6.2 (1) and later, dynamic ports can belong to two VLANs, a native VLAN and an auxiliary VLAN. For more information on how to configure auxiliary …

IP Telephony systems are those using entirely IP packets for voice communication, as explained before. In contrast to packet switched telephone systems (those based on IP protocol), …