All posts by João Antunes

Measure and Manage Voice Performance Across Networks

Posted by on September 23rd, 2014
April 27th, 2017

VoIP adoption continues to grow rapidly. The packet-switching approach has several advantages over the traditional telephone services, mostly because it’s a less expensive solution and it’s easier to manage. Enterprises are rapidly expanding VoIP deployments, with penetration expected to grow from 17% in 2013 to 40% in 2018, according to BillingWorld.… Read More »

A Very Simple Model for TCP Throughput

TCP window evolution under periodic loss
Posted by on July 24th, 2013
March 18th, 2015

The Transmission Control Protocol (TCP) is probably the most popular communication protocol on the Internet today. TCP is a complex protocol, and understanding throughput behavior is hard, especially when dealing with lossy environments such as wireless networks. In this article, we look at one such model and show that it does accurately capture TCP throughput behavior even under lossy situations,… Read More »