Product Description
Vertical SBX IP 3x8 Hybrid Expansion Board (4032-00)
The Vertical SBX 3x8 Hybrid Expansion Board (4032-00) provides 3-CO/PBX Loop Start CO line interfaces which supports: Pulse/DTMF signaling, Ring and Loop current circuits, A/D and D/a conversions, and Pulse Signaling circuitry. Also Provides 8-Hybrid Ports (DKT/SLT interfaces)
Supports the following telephones: 
        — Vertical 8-Button Digital Telephone (4008-00) 
        — Vertical 24-Button Digital Telephone (4024-00) 
        — Vertical Door Phone Box (3560-08) 
       — Standard 2500 Analog Telephones