The Aastra 9143i (33i) offers advanced features and security in a standards based, carrier-grade IP telephone. Aastra
9133i supports the advanced software features and interoperability
previously available only with the Aastra 5i Series products. Equipped with a 3 line adjustable backlit display screen, full-duplex speakerphone, group paging, support for up to 9 calls simultaneously and XML
browser capability, the 9143i (33i) will appeal to those requiring
advanced SIP features in a traditional phone design.