Installation guide

A-5
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Appendix A System Specifications
ATM Layer Specification for the UXM-E
ATM Layer Specification for the UXM-E
This section list items that apply to the UXM-E’s implementation of the ATM layer.
OC-3 (STM-1) Interface on UXM-E Back Cards
These specifications apply to the UXM-E back cards BC-UAI-xxx-xx. The specifications are the same
for single-mode fiber (SMF) and multimode fiber (MMF), except where the text makes a distinction.
ATM layer management
protocol:
Interim Local Management Interface (ILMI) or none
Standards: ATM Forum UNI 3.1, TM 4.0
Virtual path identifier (VPI)
range:
1–255
Virtual circuit identifier (VCI)
range for user traffic:
VCC: 0–65535
VPC: 32–65535
Frame-to-ATM interworking: Network interworking (FRF.5)
Service interworking (FRF.8)
Line rate: 155.52 Mbps
Line code: NRZ, CMI for STM-1
electrical
Idle code: Configurable
ATM mapping: physical layer
convergence
procedure/header error
control (PLCP/HEC)
HEC for STM-1
electrical
Signal levels for: Maximum: Minimum:
MMF transmit (TX) –15 dBm –22 dBm
MMF receive (RX) –10 dBm –31 dBm
SMF TX -8 dBm –15 dBm
SMF RX –8 dBm –28 dBm
SMFXLR TX 0 dBm –3 dBm
SMFXLR RX –3 dBm –34 dBm