Panasonic 1200N manual Line Interface, Sonet OC-12/SDH STM-4 Frame Format

Line Interface Hardware Interface

Line Interface

Provided below is an outline of the line interface specifications of the ATM Switch:

SONET OC-12/SDH STM-4 Frame Format

■For public network UNI and private network UNI/NNI

■Physical layer: SONET PMD

■Optical fiber (single mode)

■Line coding: NRZ

■Data rate/line rate: 622.08 Mbps

■Cell rate: 622.08 × 1040/1080 = 599.04 Mbps

9 R O W S

A U M S O H P O IN T E R R S O H

S T M -4 fra m e

V C -4-4C

		1 08 0B ytes
1 2B ytes	1 2B ytes		1 2B ytes		1 04 4B ytes
		4 B y te s		8 B y te s

A 1

A 1

A 1

A 2

A 2

A 2

C 1

C 1

C 1

C 1 C 1*

C 1*

B 1

E 1

F 1

D 1

D 2

D 3

4 B y te s

1 04 4B ytes

H 1 H 1*

H 1* H 2 H 2*

H 2* H 3

H 3

H 3

H 3

H 3

H 3

B 2

B 2

B 2

K 1

K 2

J1

D 4

D 5

D 6

B 3

D 7

D 8

D 9

C 2

D 10

D 11

D 12

G 1

F IX E D

Z 1

Z 1

Z 1

Z 2

Z 2

Z 2

E 2

F 2

V C -4-4C PAY LO A D

S T U F F

H 4

Z 3

H 1 * :1 0 0 1 S S 11 (S S b it,in c lu d in g H 1 , is set 1 /O O C 1 2 = " 0 0 " S T M -4 = "1 0 " )

Z 4

Z 6

H 2 * :11111111

C 1 * :U n assig n e d b y te(1 0 1 0 1 0 1 0 = N T T sp ecific atio n (S T M -4 ) fix ed )

:U n a ssig n ed b y te(A L L "0 " ) < O C 1 2 sp ec ificatio n fix ed >

A fte r 2 b y te s o f E 1 ,E 2 ,D 1 - D 1 2 ,an d Z 1

Z2 # 1 ,Z 2 # 2 ,Z 2 # 4 -Z 2 # 1 2 ,J1 ,F 2 ,Z 3 -Z 5 :A L L " 1 " F IX E D S T U F F :A L L "1 "

Figure 6-2: SONET OC-12/SDH STM-4 Frame Format

6-2	Centillion 1200N ATM Switch User Manual
	NTP 297-8103-903