EPABX INTERCOM SYSTEM AEGIS AT-105 / AT-208/ AT-308/ AT-308 GSM/ AT-416 ... are the models in the AEGIS TELEMEDIA stable. These models cater from 1 Trunk Line to 4 Trunks and Extensions starting from 1 to 16 ports as required. AT-308 model comes with a GSM Port inbuilt with 2 ports for wired line connectivity. This model is good for customers looking at small SOHO applications where they can insert a SIM card to the system.