Recommendation 476-1 for Simplex TOR

nr Letter Figures International Alphabet No. 2 Code (1) Emitted 7-unit signal (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Carriage return
Line Feed
Letter Shift
Figure Shift
Space
Unperforated tape
-
?
:
WRU
3
 
 
 
8
BELL
(
)
.
,
9
0
1
4
'
5
7
=
2
/
6
+
 
 
 
 
 
ZZAAA
ZAAZZ
AZZZA
ZAAZA
ZAAAA
ZAZZA
AZAZZ
AAZAZ
AZZAA
ZZAZA
ZZZZA
AZAAZ
AAZZZ
AAZZA
AAAZZ
AZZAZ
ZZZAZ
ZAZAZ
ZAZAA
AAAAZ
ZZZAA
AZZZZ
ZZAAZ
ZAZZZ
ZAZAZ
ZAAAZ
AAAZA
AZAAA
ZZZZZ
ZZAZZ
AAZAA
AAAAA
B BBYYY B
Y BYYBB B
B YBBBY B
B BYYBY B
Y BBYBY B
B BYBBY Y
B YBYBB Y
B YYBYB B
B YBBYY B
B BBYBY Y
Y BBBBY Y
B YBYYB B
B YYBBB Y
B YYBBY B
B YYYBB B
B YBBYB Y
Y BBBYB Y
B YBYBY B
B BYBYY B
Y YBYBB B
Y BBBYY Y
Y YBBBB Y
B BBYYB Y
Y BYBBB Y
B BYBYB Y
B BYYYB B
Y YYBBB B
Y YBBYB B
Y BYBBY B
Y BBYBB Y
Y YBBBY B
Y BYBYB B

(1) A respresents a start element and Z a stop.                               
(2) B represents the higher emitted frequency and Y the lower. Service information signals

Mode A (ARQ)Emitted signalMode B (FEC)
Control signal 1
Control signal 2
Control signal 3
Idle signal ß
Idle signal alpha
Signal repetition
BYBYYBB
YBYBYBB
BYYBBYB
BBYYBBY
BBBBYYY
YBBYYBB
 
 
 
 
Phasing signal 1
Phasing signal 2