Allworx 48x VoIP Network Server and Phone System Designed for companies of up to 250 employees per site Two (2) T1/PRI interfaces, each capable of supporting any mix of voice and data connectivity Four (4) conference bridges with up to 30 users per conference and up to 60 users in all conferences simultaneously Full support for every Allworx VoIP phones, including the new 9204 Energy Efficient design for maximum energy cost savings