With 3 way conference call, Speaker phone, PoE, 3SIP account + PSTN = 4 Numbers. All 4 number can be the CALLED or the CALLER

• SC-6009PE (PSTN & PoE) Features:
• 2 x16 character LCD Display
• 3-Way conference calls Built-In-Router
• Support 3 SIP servers running at the same time
• Support NAT pass Support DHCP Server
• A real PSTN port to support router call fromb PSTN to VoIP or VoIP to PSTN
• Support PoE (SC-6009PE)
• Blue backlight (option)
• Headset Jack (2.5mm and RJ-9 for broad headset N compatibility (option)
• Support SIP v1 (RFC2543), v2(RFC3261)
• Support T.38 (Doing)
• Support G723.1 5.3k/6.3k, G729, G.711 A-LAW, U LAW audio codec algorithm
• Volume control (Speaker, Handset, Headset & Ringer)
• Caller ID Display
• Peer to peer SIP Call
• Support OGM and TAD feature
• 5 Speed dialing key
• Call Waiting
• Call Hold
• Call Transfer (Blind Transfer, Attend Transfer, Half Attend Transfer)
• 3 way conference call
• Enterprise grade features