Chapter 1 Introduction
Avaya M770 ATM Switch User’s Guide 3
Features ListHardware Features
• Dual 40 Gbps passive backplane switch
• Low Cell Transfer Delay through the switch is 20 µsec (in port to out port)
• Low Cell Delay Variation through the switch is 5 µsec (in port to out port)
• Clock Synchronization (Generation/Propagation) of clock to all other ports
• Supports CBR, VBR-rt, VBR-nrt, ABR, UBR Classes of Service
• Supports AAL1, AAL2, AAL3/4 and AAL5 classes
• Cell Loss Priority (CLP) discard
• Early Packet Discard (EPD) and Partial Packet Discard (PPD) for AAL5
• ABR with EFCI Tagging
• Hot swapping of modules
• Line Indication LEDs: Link (LNK), Transmit (Tx), Receive (Rx), Loss of Signal
(LOS), Remote Defect Indicator (RDI)
• Idt R4650 (100 MIPS) RISC processor, 32M RAM and 4M Flash on each module
for fast call set up and protocol processing
M15-155F/SF/MS module features
• 32K cells per slot output buffers
• 16K cells per slot input buffers
• 120K Virtual Channels per module
• 32K Virtual Channels per port
M3-622F/SF module features
• 32K cells per slot output buffers
• 16K cells per slot input buffers
• 168K Virtual Channels per module
• 56K Virtual Channels per port
M4-DS3 module features
• Supports a line distance of up to 137 meters of coaxial cable
• Supports Vport (Virtual Port) traffic shaping on DS3 ports
For more information see Chapter 6, “Managing Virtual Ports“
• 30K Virtual Channels per module for both Permanent and Switched Virtual
Circuits
• 16K cells per slot input buffers
• 32K cells per slot output buffers
• Additional 256K cells per slot output buffers for traffic shaping