Update module to expand/increase performance of the ES 512 / 516 / 522 and 522 IT! The upgrade kit results in the following expansions: 8 instead of 4 IP channels (can be used externally and internally), voicebox 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).