This product is a Cisco ATA 187 Analog Telephone Adapter (model ATA187-I1-A). Function: Converts traditional analog telephones and fax machines into Voice over IP (VoIP) devices. Ports: Features two voice ports (RJ-11) for telephones and one Ethernet port (RJ-45) for network connectivity. Features: Supports Session Initiation Protocol (SIP) and high-performance line echo cancellation. Price: 617 SAR And I'm selling it for 100 SAR