Move analog voice services into a SIP environment without replacing every endpoint at once. AudioCodes MP504/2S/SIP is a compact MediaPack 5XX gateway designed for baseline VoIP support, giving infrastructure teams a practical way to connect a small number of analog devices to modern IP telephony. With 2 FXS ports, this model is well suited to targeted use cases where only a few legacy devices remain in service. The 1 Gigabit Ethernet LAN port and 1 Gigabit Ethernet WAN port provide straightforward network integration, while single AC power keeps the design simple for branch offices, small equipment rooms, and controlled migration projects. This gateway is a fit for organizations that value precision over excess capacity. Instead of overprovisioning a large analog platform, the MP504/2S/SIP delivers the exact connectivity needed for limited endpoint support, helping teams preserve uptime, reduce replacement scope, and keep migration plans aligned with operational budgets.