Phone Solutions PS 230v2 phones are designed to work with your favorite SIP based PBX or softswitch. The PS 230v2 is our most economical phone, supporting features generally not found on an entry-level phone. The PS 230v2 supports 4 SIP accounts, 4 line keys,12 programmable keys, and a color LCD screen. The PS 230v2 also has Power over Ethernet (PoE), eliminating the need for power cables.