Clear One’s MAXAttach IP is a fully expandable SIP based VoIP tabletop conferencing phone. MAXAttach IP +1 includes 3 phone units, with the ability to daisy-chain up to four phones if the coverage is needed for larger conference rooms. MAXAttach IP can be used in separate rooms and in various combinations with the expansion base option that provides a completely flexible solution. Superior Audio Performance advantages include high quality, full-duplex sound, distributed Echo Cancellation®, noise cancellation, and audio balancing automatic level controls. This audio conferencing phone delivers unrivaled conferencing audio and room coverage at outstanding audio conferencing value.