| BRI Interface Power | 40V @ 1W Normal and Restricted on BRI-S 88V @ 3.3W Normal and Sealing on BRI-U |
| BRI interfaces | S or U - up to 16 |
| Channel Mapping | MSN or B channel routing; Multi Line Hunt Group |
| POTS Power | -48V line feed |
| POTS interfaces | Up to 32 |
| PRI Encoding | E1 AMI/HDB3, CRC-4 multi frame/basic frame T1 B825, ESF |
| Protocols | ETSI, National-ISDN |
| Connectors | (0,8 or 16) BRI ISDN RJ-45; (0, 16 or 32) POTS RJ11; (2) PRI ISDN RJ-45; (1) RS-232/V.24, DB25F; (1) Ethernet RJ45; (1) Internal Modem RJ11 |
| Environmental | 0-50°C, 10-80% Humidity (Non Condensing) |
| Ethernet Port | 10BaseT |
| Indicators | (2) LEDs per port: Physical, B channel |
| Power | 110-240 VAC, 90W (mains version) -36V to -72Vdc, 90W (-48Vdc version) |
| Weight | 5 Kg |
| Size | 9cm x 49cm x 40cm (19" rack including handles) 9cm x 35cm x 44cm (19" rack excluding handles) 12cm x 48cm x 38cm (desktop) |
| Warranty | Arcaplex | Horizon is supplied with one year's product warranty |
