Troubleshooting guide

MX2820 System Manual
1-14 61186003L1-1D
STS-1 MUX
• P/N 1186005L1
The MX2820 STS-1 MUX is a multiplexer unit that plugs into an MX2820 chassis. The
MX2820 STS-1 MUX interfaces to a standard STS-1 signal from the network to provide 28
DSX-1 or 21 E1 outputs on the terminal side through the demapping of 28 VT1.5s or 21 VT2s.
Two MX2820 MUX cards are used together to provide a redundant STS-1 multiplexer circuit.
The MX2820 STS-1 MUX provides 1:1 redundancy and meets the requirements for NEBS
Level 3.
Figure 1-6. MX2820 STS-1 MUX, –48 VDC
The MX2820 STS-1 MUX has the following Features:
• Affordable STS-1 bandwidth consolidation
• Up to 9 redundant STS-1s in 2U of space
• Built-in 1:1 STS-1 and DS1 redundancy
• Backhaul multiple service types (T1/E1)
• TL1, SNMP, Telnet, and SSH management
• Operates over temperature range of: 0°C to +50°C (with fans)
• Locally powered –48 VDC
NOTE
The MX2820 has two power options: –48VDC or ±24 VDC. The
STS-1 MUX operates at –48VDC only. Do not deploy a ±24 VDC
system if STS-1 MUXes are to be deployed.
1186005
STS-1 MUX
ALM
ACT
TEST
STAT
TEST
STAT
DS1
NET