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Chapter 1 Overview
2 M15-155 Installation Guide
Features
Note: For Software Features please refer to the Avaya M770 ATM Switch User’s
Guide.
• M15-155F — 15 ATM OC-3 Multi-Mode Fiber (MMF) ports with SC connectors
(3 m to 2000 m cable lengths)
• M15-155SF — 15 ATM OC-3 Single-Mode Fiber (SMF) ports with SC connectors
(3 m to 15 km cable lengths)
• M15-155MS — 2 ATM OC-3 Single-Mode Fiber ports with (SMF – 3 m to 15 km
cable lengths) and 13 Multi-Mode Fiber ports (MMF – 3 m to 2000 m cable
lengths) with SC connectors.
• 32K cells output buffers
• 16K cells input buffers
• Low Cell Transfer Delay through the switch is 20 µsec (in port to out port)
• Low Cell Variation Delay through the switch is 5 µsec (in port to out port)
• Clock Generation /Clock 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 – Loss of Signal (LOS), Remote Defect Indicator (RDI), Transmit
and Receive traffic
• 32K Virtual Channels per port and 120K Virtual Channels per module. The
Software version may limit the number of the VCs currently supported.
• LANE servers: LECS, BUS, LES, on each module. LEC on elected module.
• Idt R4650 (100 MIPS) RISC processor, 32 Mbyte RAM and 4 Mbyte Flash on
EACH module for fast call set up and protocol processing.