Nortel BayStack 5520-24T-PWR Specifications page 7

Figure 5. Enterprise solution
Passport 8600
Signaling
Server
Call
Server
Media
Gateway
Communication Server 1000
End-to-end IP Telephony
BayStack 5520 Switches provide enterprises with another option for end-to-end deployment
of IP Telephony. Communications Server 1000, Business Communications Manager*,
Meridian*, and BayStack all provide the choices that allow enterprises—from small and
medium businesses to large campus infrastructures—to deploy the solution that is right for
them and offers the flexibility to implement infrastructure changes at their own pace. Figure
5 shows an example of a large enterprise solution.
Integrated Time Domain Reflectometer (TDR)
For advanced resiliency, the BayStack 5520 is architected to include an integrated TDR. This
feature will simplify troubleshooting of the physical cable plant, enabling IT managers to
quickly identify the failing mechanism and isolate to the source of the problem, helping
ensure maximum uptime of the network.
Through remote and non-invasive diagnosis of cabling issues such as cable opens, cable
shorts or impedance mismatch in the cable and report, within one meter, the distance of the
fault. The switch can detect and report these issues without unplugging cables and plugging
in expensive cable testers. (Feature supported with future software release.)
Power sharing options
BayStack 5520 Switches can be used in conjunction with the BayStack 15 PSU (Power
Supply Unit) to create a load sharing or RPSU (redundant power supply unit) solution.
Distributed Multi-Link Trunking
Servers
CallPilot 2.5
Analog phones
†
BayStack 5520 Switches
10/100/1000 Mbps
Power
Desktop
users
i2004
Standard LAN
Power over Ethernet
Network
camera
WLAN Access
Point 2220
7