Ericsson ranked at the top of the latest Vendor Matrix released by ABI Research, maintaining the position it held in the last edition of this Matrix. Alcatel-Lucent and Nokia Siemens Networks claimed the second and third spots in the company’s new evaluation of worldwide IP Multimedia Subsystems infrastructure vendors. Alcatel-Lucent showed a stellar rise compared to its #6 rank in the previous Matrix, while Nokia Siemens held its previous position.

The Vendor Matrix is an analytical tool developed by ABI Research to provide a clear understanding of vendors’ positions in specific markets. Vendors are assessed on the important parameters of “innovation” and “implementation” across several criteria unique to each vendor matrix.

For this particular matrix, under "innovation," ABI Research examined the system vendors’ R&D budgets and the number of their IMS industry partnerships; their support of wireline and wireless networks; and the number of innovative services.

Under "implementation," ABI Research scrutinized the following criteria: how well each vendor is equipped to supply a complete system (either alone or with partners); its announced orders or trials; its abilities as a system integrator; the number of Tier 1 operators that are customers; the number of elements provided; and the number of applications provided or supported.

To view a list of the “top ten” firms in this Vendor Matrix, please visit “IMS Vendor Matrix” . Registration on the ABI Research website (free) is required. Access to the rankings and profiles of all companies surveyed is available to clients of ABI Research.

This Vendor Matrix forms part of ABI Research’s Mobile Networks Research Service. For a list of all ABI Research Vendor Matrices, please visit The ABI Research Vendor Matrix.