Universal Switching Module Enhanced
•The maximum throughput is 310 Mbps—two times the OC-3 (STM1) rate. This maximum applies whether the back card is a 2-port or 4-port back card. In practical application, this maximum rate means that most trunk applications with an OC-3 interface would use the 2-port back card.
•The UXM-E supports ATM-to-Frame Relay network and service interworking.
•For the ABR connection types, the UXM-E supports EFCI marking, Explicit Rate Stamping, and Virtual Source/Virtual Destination (VS/VD).
•The UXM-E supports Y-cable redundancy with hot standby for very fast switchover.
•The front card has 128K cell buffers.
•For statistics support, the UXM-E provides real-time statistics counters and interval statistics collection for ports, lines, trunks, and channels.
•The UXM-E can form a logical trunk by grouping more than one T1 or E1 port. The name of this (purchased) option is Inverse Multiplexing over ATM (IMA).
•The on-board diagnostics are loopback, self-test, and background.
UXM-E Interfaces
Table 4-4is a list of the UXM-E back cards. Figure 4-3shows the UXM-E front card. Table 4-5defines all possible combinations for the states of the front card status LEDs (Fail, Active, and Standby).
Table 4-4 | Back Cards for the UXM-E |
| | |
Card Name | | Card Description |
| |
BC-UAI-4-155-MMF | 4-port multimode fiber 155 Mbps |
| |
BC-UAI-4-155-SMF | 4-port single mode fiber 155 Mbps |
| |
BC-UAI-2-155-SMF | 2-port single mode fiber 155 Mbps |
| |
BC-UAI-2-SMFXLR | 2-port single mode fiber XLR |
| |
BC-UAI-4-SMFXLR | 4-port single mode fiber XLR |
| |
BC-UAI-4-STM1E | 4-port synchronous transport module-1E |
| | |
BC-UAI-6-T3 | | 6-port T3 back card |
| | |
BC-UAI-3-T3 | | 3-port T3 back card |
| | |
BC-UAI-6-E3 | | 6-port E3 back card |
| | |
BC-UAI-3-E3 | | 3-port E3 back card |
| |
BC-UAI-4-T1-DB-15 | 4-port T1 back card with DB-15 connector |
| |
BC-UAI-8-T1-DB-15 | 8-port T1 back card with DB-15 connector |
| |
BC-UAI-4-E1-DB-15 | 4-port E1 back card with DB-15 connector |
| |
BC-UAI-8-E1-DB-15 | 8-port E1 back card with DB-15 connector |
| |
BC-UAI-4-E1-BNC | 4-port E1 back card with BNC connector |
| |
BC-UAI-8-E1-BNC | 8-port E1 back card with BNC connector |
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