It is used to expand the capacity of PBX. 1 pcs of D30 stands for 100 extensions
and 30 concurrent calls
The X5S IP phone is a dynamic business communications tool for superior voice communications and extended DSS screen functionality. It has a faster, more responsive interface than the X3/X4 and offers better overall performance. The X5S is a 6-line IP phone and 3.5 inch large color screen. What’s more, the X5S is built with Gigabit Ethernet technology for rapid call handling. Plus, with an all-new USB port, the X5S boasts unparalleled functionality and expansibility with Bluetooth, USB recording features.