... AR2200 uses the embedded hardware encryption technique and supports the voice Digital Signal Processor (DSP). It supports firewall functions, call ... asynchronous interface cards, ADSL2+/G.SHDSL interface cards, FXS/FXO voice cards, ISDN interface cards, CPOS interface cards and EPON/GPON ... NTP, CWMP, Auto-Config, deployment using USB disk, NetConf, CLI Huawei AR2200 Series Enterprise Routers