Today's $14 billion SIP trunking industry accounts for 58% of all network traffic, according to a new Eastern Management Group study. Underpinning the SIP trunk industry is a staggering number of vendors of all shapes and sizes, from tier-one carriers such as AT&T and BT to small niche resellers. For IT managers, vendor selection looks like the kid-in-a-candy-store problem. The difficulty comes with choosing.

We examined this question of choice by putting it to SIP trunk customers: Would you recommend your provider to a friend? Here's how we went about it, and the findings.

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More than 3,000 IT managers were surveyed in Eastern Management Group's SIP trunking customer satisfaction study. Before we reached the question about a recommendation to a friend, we first set the stage by having customers rate their SIP trunk vendor on nine different measurements. The nine fall into three categories: product, vendor experience, and customer delight. So, by the time we broached the matter of recommendation to a friend, survey respondents should have been in the proper frame of mind to discuss this.

Gold Winners -- Recommend-To-A-Friend
Each SIP trunk customer shared how they feel about recommending their provider to a friend. Eastern Management Group then developed a model using the data, and designated those receiving the highest scores as Gold Winners.

Read the rest of this article here.