The Sangoma S505 is a mid-level IP phone designed for professional VoIP use. It features a 3.5-inch color display, 35 programmable softkeys, and support for up to four VoIP accounts. The phone includes dual Ethernet ports with PoE support, wideband audio for clear communication, and is compatible with most SIP-based PBX systems, including Sangoma’s FreePBX and PBXact. It is suitable for users who need a reliable desk phone with flexible configuration options.