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ArmA Multiplayer Voice Chat
This port is primarily used by the military simulation game ArmA for in-game Voice over Network (VoN) communications, typically serving as a supplementary port offset from the main game server port. It facilitates synchronized voice communication between players during multiplayer sessions, enhancing tactical gameplay..
Port 2305 is utilized as a default UDP port in ArmA multiplayer environments, specifically for Voice over Network (VoN) functionality. When hosting a dedicated server or peer-to-peer session, ArmA commonly designates port 2302 as the base port; 2305 serves as an offset (base+3) dedicated to managing VoIP streams embedded within the game. This separation helps optimize game data and voice traffic handling simultaneously.
Communication over this port mainly consists of real-time encoded audio packets transmitted between players, facilitating low-latency voice chat. The VoN system often employs codecs internally optimized for bandwidth efficiency within constrained network conditions. UDP is preferred as it supports quick delivery without the overhead or delays that TCP might introduce.
Typically, ArmA servers behind firewalls or NAT must have this port, along with adjacent game ports, properly forwarded to allow seamless client connectivity and minimize voice lag or packet loss. Most dedicated server documentation highlights opening port 2305 UDP as essential for full in-game voice functionality.