8 Port Phone/Security Expansion Module - Our Security Based Phone Bridge keeps your data lines safe.8 Port Phone/Security Expansion Module features include: Security Based Phone Bridge Includes Security Interface Bridge up to 4 telephone lines to 8 locations Connect up to 8 separate telephone per line Connect to security system Printed circuit board module Bridge has 4-pair 110 type IDC punchdowns Order Qty of 1 = 1 Piece Below is more info on our 8 Port Phone/Security Expansion Module