Thomson has acquired Cirpack, a privately-held developer of class-5 softswitching solutions based near Paris. Financial terms were not disclosed.Cirpack claims 45 telco and ISP customers in 15 countries. The customer list includes Free, a subsidiary of the Iliad Group and the second largest French ISP, which is using a joint solution from IBM and Cirpack to deliver a consumer VoIP service over unbundled DSL lines. The residential VoIP is provided as an add-on to the company's ADSL service in the areas where Free has deployed its own DSL infrastructure....