The ETR-6 Card provides 6 ETR (PARTNER ACS telephone) Station ports (Ports 1-6); and supports (1) of the following optional Daughter Cards: ATM-4 or PRI/T1. When an ATM-4 is added, ports 7-8 become Power Failure Transfer ports, and ports 9-12 provide 4 additional CO Line Ports.

** Maximum of 3 per system
** Supports Partner 6/6D 18/18D 34D 3910 3920 sets / analog devises
** Maximum of (4) 34D per system / 2-per card

• Supported on IP Office Essential Edition – PARTNER Version only
• IP500V2 only
• Maximum of 3 Extension Cards per IP500V2