Update module for expanding/increasing the performance of the ES 512 / 516 / 522 and 522 IT! The upgrade kit provides the following enhancements: 8 instead of 4 IP channels (external and internal use), voice box recording capacity 240 instead of 120 minutes, AIS via opt. license expandable to 4 instead of 1 channel, AMS integration via opt. license, max. 20 instead of 10 TAPI lines (increase in TAPI lines via opt. license). Optional use of AGFEO Dashboard (from ES firmware 2.2).
