Voice over IP (VoIP) is the descriptor for the technology used to carry digitised voice over an IP data network. VoIP requires two classes of protocols: a signaling protocol such as SIP, H.323 or MGCP ...

A straightforward approach to troubleshooting VoIP that can be applied to video as well. VoIP is particularly sensitive to packet loss, and determining the cause of the packet loss can be difficult.

Some cavalierly refer to IP telephony as “just another application” that rides over your data network. But wait and see what happens if VoIP call quality starts eroding or, worse yet, if your ...

Voice Activity Detection (VAD) — also known as Silence Suppression — should be supported for each vocoders on the IP-PBX you select and, for purposes of calculating bandwidth, assume that it is ...

As the enterprise telephony business infrastructure continues its migration from the asynchronous transfer mode (ATM) to the Internet Protocol (IP) network technology, the transition is having an ...

In Part 1 of this article, we laid out the throughput and delay problems that can occur in a wireless LAN (WLAN). Now, in Part 2, we'll further the discussion by looking at the impact of throughput ...

Have you ever performed surgery on data packets? There are times when that may be the best way to troubleshoot and optimize your network. This edition of the Packet Professor will get you started in ...