Panasonic 1200N manual G.751 E3 Frame Format

Hardware Interface Line Interface

J

FAS : Fram e alignm ent signal

R AI : Alarm indication to the rem ote digital m ultiplex equipm ent

N .U : Bit reserved for national use

JSB : Justification service bits

BTAJ : Bits from tributaire available for justification

Figure 6-9: G.751 E3 Frame Format

1	1	1	1	53 octets
A1	A2	P 8	Z3	First ATM C ell
A1	A2	P 7	Z2	ATM C ell
A1	A2	P 6	Z1	ATM C ell
A1	A2	P 5	F1	ATM C ell
A1	A2	P 4	B1	ATM C ell
A1	A2	P 3	G 1	ATM C ell
A1	A2	P 2	M 2(1)	ATM C ell	18(17) to 20(21) octets
A1	A2	P 1	M 1(2)	ATM C ell
A1	A2	P 0	C 1	Last ATM C ell	Trailer

		125 ￿s
A1,A2	: fram ing octets.
P0-P8 : path overhead idenfier octet.
C 1	: cycle stuff counter.
M 1,M 2	: D Q D B layer m anagem ent inform ation octets.
G 1	: PLCP path status.
B1	:	Bit Interleaved Parity-8 (BIP -8) .
F1	:	PLCP path user channel.
Z1-Z3	:	grow th octets.

Figure 6-10: G.832 (G.751) E3 PLCP Frame Format

Centillion 1200N ATM Switch User Manual	6-9
NTP 297-8103-903