Sangoma S505 VoIP SIP telephone, 2

S505 VoIP SIP telephone, 2 x Gigabit Ethernet, 8 x line keys, PoE required, AC optional, 3.5 inch colour backlit LCD, HD audio, RJ9 headset jack, EHS support for specific Jabra and Plantronics headsets (EHS cable SKU #PHON-ACCS-EHS30-SNG required), support for up to 6 expansion modules (PHON-EXP100). Optional AC power supply, SKU #PHON-ACCS-PSUNA-SNG. Note: When using a Sangoma phone, EndPoint Manager software inside FreePBX / PBXact is automatically enabled. These telephones are not open SIP compatible. They are only compatible with PBXact or FreePBX telephone systems.