BXM T3/E3, 155, and 622 6-5
BXM Capabilities
BXM Capabilities
The following lists some of the major capabilities of the BXM cards:
Features
• Virtual Path (VP) as well as Virtual Circuit (VC) connections.
• Support both PVC and SVC connections.
• Connections supported per card:
— 16,000 to 32,000 connections per card depending on configuration.
• BXM, T3/E3 ATM with 8 or 12 ports, either T3 at a 44.736 Mbps rate, or E3 at a 34.368 rate.
• BXM, OC-3/STM-1 ATM: four or eight ports, with each port operating at a 155.52 Mbps rate,
353,208 cells per second (full OC-3 rate).
• BXM, OC-12/STM-4 ATM: one or two ports, with each port operating at a 622.08 Mbps rate,
1,412,830 cells per second (full OC-12 rate).
• Selective Cell Discard.
• Up to 228,300 cell ingress (receive) buffers depending on card configuration.
• Up to 228,300 cell egress (transmit) buffers depending on card configuration.
• CBR, VBR, ABR, and UBR service classes.
Table 6-2 BXM-T3/E3, BXM-155, and BXM-622 Back Cards
Back Card
Model Number
No. of
Ports Description
Optical Range
(less than or
equal to)
T3/E3 (45 Mbps/34 Mbps)
BPX-T3/E3-BC 8/12 Universal T3/E3 backcard for
8 or 12 port card configurations
n/a
OC3/STM-1 (155.520 Mbps)
MMF-155-8 8 Multi-Mode Fiber 2km
MMF-155-4 4 Multi-Mode Fiber 2km
SMF-155-8 8 Single-Mode Fiber 20km
SMF-155-4 4 Single-Mode Fiber 20km
SMFLR-155-8 8 Single-Mode Fiber Long Reach 40km
SMFLR-155-4 4 Single-Mode Fiber Long Reach 40km
OC12/STM-4 (622.08 Mbps)
SMF-622-2 2 Single-Mode Fiber 20km
SMF-622 1 Single-Mode Fiber 20km
SMFLR-622-2 2 Single-Mode Fiber Long Range 40km
SMFLR-622 1 Single-Mode Fiber Long Range 40km
