Panasonic 1200N Manual De Usuario

A functional description of each functional block in the line card is shown in the
following table.

Line card

PHY

■

Conversion of physical media 
(e.g., E/O conversion, O/E conversion)

■

Reception clock recovery

■

Transmission clock generation

■

Frame termination

■

Cell alignment

■

Speed conversion

■

Line loop-back control

MUX

■

Cell multiplexing/demultiplexing of multiple PHY

■

Cell loop-back control

ALT

■

SSO (Switch Specific Overhead) generation 
(reception side)

■

Cell header conversion (transmission side)

■

Policing control

■

Flow monitor (e.g., passing cell count)

■

OAM function (Fault Management)

IXB

■

Cell storage buffer (32K cell buffer)

■

QoS five-class (CBR, rt-VBR, nrt-VBR, ABR, UBR)

■

Two-class cell loss priority control

■

EPD (Early Packet Discard)

■

BP (Back Pressure) reception control

■

Congestion notification control

OXB

■

Cell storage buffer (32K cell buffer)

■

QoS five-class (CBR, rt-VBR, nrt-VBR, ABR, UBR)

■

BP (Back Pressure) generation control

■

Broadcast cell control

■

ABR (ER control, binary mode)

■

Congestion notification control

■

Shaping