LOS ANGELES—This is the second installment of a contribution from Jim DeFilippis on SDI versus IP. For Part 1, see “Which Switch is Which?” The second tale-of-the-tape issue is delay or latency. There ...

In the context of IP networks, the phrase “quality of service” (QoS) has a specific meaning, describing the quality of the network with regard to the following: These are all particularly important ...

The use of audio-over-internet protocol codecs for STL applications is becoming more and more commonplace. This is especially important now because the large telcos are much more interested in ...

ShenQingguo has been an Associate Professor at the Institute ofCommunications Engineering, Nanjing, China since 1995. He currentlyteaches courses on computer networks and mobile computer networks.He ...