Ds3, Atm In 44.736 Mbit/S Mapping (Plcp, Hec Based) - Wavetek ANT-20 Operating Manual

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ANT-20/ANT-20E
7

DS3, ATM in 44.736 Mbit/s mapping (PLCP, HEC based)

Option 3035/90.73
7.1
PLCP-based Mapping
The ATM cells are firs mapped into PLCP frames (Physical Layer Convergence Protocol) as per
G.804. The PLCP frame slips bit-synchronously (Nibble-aligned floating-4 bit) into DS3 C Parity
frames as per G.804 (G.704). For more information refer to the specifications of the "STM-1-
Mapping" file (section "DS3 Mapping"):
7.1.1
Overhead
DS3: PLCP based ATM mapping
All values are hexadecimal.
B1 is formed from the POH and ATM cells of the 12 rows of the previous frame.
Specifications
1
2
3
(POI)
1
A1
A2
P11
F6
28
2C
2
A1
A2
P10
F6
28
29
3
A1
A2
P09
F6
28
25
4
A1
A2
P08
F6
28
20
5
A1
A2
P0
F6
28
1C
6
A1
A2
P06
F6
28
19
7
A1
A2
P05
F6
28
15
8
A1
A2
P04
F6
28
10
9
A1
A2
P03
F6
28
0D
10
A1
A2
P02
F6
28
08
11
A1
A2
P01
F6
28
04
12
A1
A2
P00
F6
28
01
O H
4
5
(POH)
Z6
ATM Cell
00
Z5
ATM Cell
00
Z4
ATM Cell
00
Z3
ATM Cell
00
Z2
ATM Cell
00
Z1
ATM Cell
00
X
ATM Cell
00
B1
ATM Cell
G1
ATM Cell
00
X
ATM Cell
00
X
ATM Cell
00
C1
ATM Cell
ATM Mappings
6
Trailer
C
S-9

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