610D SIP-DECT Lite Bundles Aastra SIP-DECT Lite is a single cell access point and a Aastra 610d or 620d DECT handset combined into one complete SKU. This new product offer provides a competitively priced mobility option for the individual user that can also support up to 8 concurrent calls, providing a mobility solution for the small office or user group. The same access point and handsets can be upgraded to form part of a larger SIP-DECT solution as the business needs grow and evolve.