Hardware overview
15
Model 2960/2996 RAS Getting Started Guide
1 • Introduction
Hardware overview
The Model 2960/2996 RAS is a fully integrated remote access server for central site concentration of analog
and digital modem calls. The RAS (see
figure 2
) comprises a 1U-high 17-inch wide chassis that contains a
motherboard and two dual-redundant power supplies. A full set of LEDs are present on the chassis front panel,
while connections for WAN, LAN, and control ports are present on the rear of the chassis. Two IEC-320
receptacles provide for AC power input. Optional DC power supplies with 32 to 72 VDC are available.
Figure 2. Model 2960/2996 RAS features (
Cool White
version shown)
WAN
The RAS includes four WAN ports, each of which is software-selectable for T1, E1 or PRI operation. These
WAN ports are provided via balanced RJ-48C interfaces. They also include:
•
Built-in T1/E1 CSU/DSU
•
T1 1.544 Mbps with: D4 or ESF framing, AMI or B8ZS, FCC part 68 compliant
•
E1 2.048 Mbps with: Double frame or CRC4 framing, AMI/HDB3, CTR-4, and CTR-12 compliant
LAN
The 10/100-Mbps Ethernet LAN port is presented on an RJ-45 connector with an auto-sensing/full-duplex
10Base-T or 100Base-T interface. It also includes:
•
100Base-TX half-/full-duplex operation (100 + 100)
•
10Base-T half-/full-duplex operation (10 + 10)
•
Auto detection and fallback
•
10/100 Mbps link and status indicators
