Mini pabx Capacity: Basic 4 CO lines, 8 extensions (408),expand ... , 424,432,832,896,1288,1696,1680 Transfer caller ID Mini pabxCapacity: Basic 4 CO lines, 8 extensions (408), expand to ... ID (optional)Intercom caller ID (optional)Auto-attendant (DISA:20s three paragraphs) (Two OGM)Auto/Operator modeAuto IP dialingExternal music input on ...