The Aastra MBU 400 is an affordable and flexible multi-handset DECT mobility solution for the SMB market. It supports eight SIP trunks and one analog trunk/line and can handle up to eight Aastra 420d handsets. These attractive handsets feature color displays, polyphonic ringtones, vibrate functionality and all of the mobility features small business users are looking for. In addition, the Aastra MBU 400 comes with a DECT 6.0 gateway offering an FXO port, and tightly integrates with the AastraLink Pro 160, allowing customers a single tool for the administration of a complete Aastra system of SIP terminals and DECT handsets.