Hardware Interface Line Interface

Centillion 1200N ATM Switch User Manual 6-9

NTP 297-8103-903
Figure 6-9: G.751 E3 Frame FormatFigure 6-10: G.832 (G.751) E3 PLCP Frame Format

J

FAS : Frame alignment signal

RAI : A la rm indicatio n to th e r e m ote di

g

ital m u ltip lex e

q

uipment

N.U : B it re s e r v e d fo r n a tional use

JSB : Justification service bits

BTAJ : B its fro m tributaire a v a ila b le fo r

j

ustificatio n

ATM Ce ll
ATM Ce ll
ATM Ce ll
ATM Ce ll
ATM Ce ll
ATM Ce ll
ATM Ce ll
A1
A1
A1
A1
A1
A1
A1
A1
A1
A2
A2
A2
A2
A2
A2
A2
A2
A2
Z3
Z2
Z1
F1
B1
G1
M2(1)
M1(2)
C1P0
P1
P2
P3
P4
P5
P6
P7
P8
ATM Ce llLast
ATM Ce ll
First
53 octets11 1 1
18(17) to 20(21) octets
Trailer
125
s
A1,A2
P0-P8
C1
M1,M2
G1
B1
F1
Z1-Z3
:
:
:
:
:
:
:
:
framing octets.
path overhead idenfier octet.
cycle stuff counter.
DQDB layer management information octets.
PLCP path status.
Bit Interle a v ed Parity -8 (BIP-8)
PLCP path user channel. .
g
rowth octets.