Juniper Networks M20 - Manual (Page 6)

ATM DS3 PIC
■ JUNOS 4.3 and later Software release
■ Four DS3 ports
■ Power requirement: 0.39 A @ 48 V (19 W)
■ Conforms to ANSI T1.105-1991 and T1E1.2/93-020R1
■ Asynchronous Transfer Mode (ATM) standards compliant
■ Alarm and event counting and detection
■ Compatible with well-known ATM switches
■ ATM switch ID, which displays the switch IP address and local interface name of the
adjacent Fore ATM switches
Description
■ OAM fault management processes Alarm Indication Signal (AIS) and Remote Defect
Indicator (RDI) cells
■ ASIC-based packet segmentation and reassembly (SAR) management and output port
queuing
■ 16-MB SDRAM memory for ATM SAR
■ Packet buffering, Layer 2 parsing
■ Configurable framing options:
■ C-bit with ATM direct mapping
■ C-bit with PLCP framing (default)
■ M23 ATM direct mapping
■ M23 with PLCP framing
Hardware features
6 ■ ATM DS3 PIC
M20 Internet Router PIC Guide: End-of-Life PICs