...
| Mechanical Characteristics | 3U or 7U height 19" rack |
| Operating temperature | 0 oC to +60 oC |
| Humidity | 5% to 80% non-condensing |
| Maximum power requirements | +5Vdc (400 mA), +12Vdc (50 mA), -12Vdc (50 mA) |
| Operating Systems supported | All 32-bit and 64-bit Windows editions |
| Maximum density | Virtually unlimited, 2000+ ports total |
PRI specifications
| Rate | E1 (2.048Mb/s), T1 (1.544Mb/s) |
| AC Impedance | 1100Ω |
| Maximum tap length | 100m (Terminated), 10m (Unterminated) |
| Protocol support | All major ISDN variants: Q.SIG, DASS-2, DPNSS |