When a System/3 is connected to an IBM 3750 Switching System, the RPG II telecommunication program must be used to code the application programs allowing message exchanges between the two systems. The application program can be written for message exchange related to the following 3750 functions:
1. Call recording
2. Contact monitoring under data processing system control
3. Inquiry to data processing system with recorded answer
4. Real time data collection to data processing system 5. Recorded announcement to extension under data
processing system
6 Transfer of recorded data to data processing system Comrnunications between the System/3 and the 3750 are binary synchronous, point-to-point operations in trans-parent mode. Only the EBCDIC code can be used. The System/3 operates as a transmit and receive station.
Programming Procedure
On each end of file (EOT) received from a flle, the RPG Il program must switch to read the other input file.
z .
I . The input files will be defined as receive files on the RPG II telecommunications specifications.
The output file will be defined as a transmit file on the RPG II telecommunications soecifications.
The exit frorn the RPG II program can be taken when the stop message is received.
The rernot device field of the t{PG II telecommuni-cations specification must be left blank. The 3750 is considered to be a processor by System/3 RPG II BSCA.
*. ^
U s i n g R P G I I i n Communication Between a System/3 and the IBM 3750 (World Trade Only) 9 1
9 2
1'his appendix is intended for a person wlio is kr.rowledge-r b l e a b o u t B S C li n e p kr.rowledge-r o t o c o l . T h i s p e kr.rowledge-r s o n s h o u l d lt a v e th e l o l l o w i n g i n l b l n t a t i o n t o :
. W r i t c u p r o g f a n r 1 ' o r th e r e t ) i o t e lo c a t i o n t o i n t e r f l c e w i t h S y s t e r n / 3 R P G I I
o Wlitc it progrant lbr the Systenri -3 to perlbr.nr a spectlic s e q u e u c c o f l i n e p r o l o c o l
- l ' h e
a p p c ' n d i x s h o w s R P G I l B i r u r y S y n o l r r o n o u s C o r n n r u n i -c a t i o n s ( [ i S C ) li n e p l o t o c o l s a n d i n d i c a t e s w l r i c h o n e s a r e p e ri b l n t c r J a u t o t n a t i c a l l y a n d r v h i c l t o r l e s rl l c l { P G l l p r o g r a n l c o n t r o l s .
[ : l c h S l s t e n l - ] t l a n s r n i s s i o n o f d a t a o v e r t l ) e c o u t u r u n i e a -t i o n l i n c i s e q u a l -t o B L O C K S I Z E o n -t h e B S [ ' A ' s F i l e D e s c r . i p t i o n S p e c i f i c u t i o n . T h c s i z c o f t l i e d l t a b l o c k s r e c e i v c d b y S y s t e r l / - i is c o n t L o l l e d b y t h e t r a n s u r i t r i u g s r a t i o n . ( ' f h e a s t c r i s k i n t h e S y s t c n r , . , l S o f t w a L e / A d a p t e r u o l u n t n i n d r c a t e s J u s t o n r e f c o d i n g I o g i c . )
A p p e n d i x l . S y s t e m / 3 R P G l l I n t e r f a c e t o B S C L i n e P r o t o c o l
M r l c . D L r r i r r g t h c e x e c u t i o n o f a n R P G l t t e l e c o n r r u u r r i c a t i o r r p f o g r a n t , B S [ ' o u t p u t d a 1 a r n a n a g e r - n c ' r r t d e l a y s t r : l u s r n t s s i t r n o l e a c h b l o c k o l ' d a t a r - r n t r l t h c n c x r b l o c k i s r c a d y t o b e
t r a n s n r i t t c d . T h i s d c l a y i s n e c e s s a r y t o a l l o w d a t a r n a n a g e n r e n t 1 o p l a c c th e p r o p e r l i n c c o n t r . o l cl i a l a c t c r (E T X ) o r r t l t c l a s t b l o c k o f ' d a t a t o b e t r a r r s n r i t t e d . F o r c x a n t p l e , Il t e T r a n s m i t Llultiple FJlcs clrart slrows tlte last data block of lilc I beirrg t f a n s n i l t t e d r s u r c s u l t o f t h e u s c r p r o g r a n l rc q u e s t i l t g o u t p u t t o B S C ll l c r r .
S y s t e m / 3 T r a n s m i t t i n g S t a t i o n Syste m /3 Softwa relAdapte r
L i n e in i t i a l i z a t i o n ( a u t o r n a t i c )
' I n p u t f r o r r B S C f r l e ( a r i t o m a | c a c k n o w l e c l g e )
<r Da1,r
' C r t t s e s
, r r t l t. r { l r l e { o r B S C l i l e
S v s l c r r r i I I I P ( i I I l n l c r l u e c t o l l S ( ' [ . i n c P r o t o c o l 9 3
T r a n s m i t
R e c e r v i n E S t a t i o n System/3 Software/Adapter
L i n e i n i t i a l i z a t i o n ( a u t o m a t i c )
* o u t p u t
t o B S C ii l e ( a u t o m a t i c a c k n o w l e d g e )
" E n d o f j o b
94
T r a n s m i t M u l t i p l e F i l e s
S y s t e m / 3 Sy stem/3 Software/Adapter
L i r r e r n r t i a l i z a l r o n ( a u t o r n a t r c )
' O u t p u t
t o t s S C t i l i : 1
{ . i . , l u t r t l t a d c K r r o \ \ l ( l , J r I
' O u t p r L r t
t o B S C f r l e r r
{ . r t r l o ' l ' d t C . r C k r l { , \ \ l , ' 1 , 1 ' \
L r n c t r i t r a l z a t r o f ( a u t o r l a t r c )
' E n i l o i j o t r
T r a n s m i t / R e c e i v e
S y s t e m / 3 R e c e i v e / T r a n s m i t S t a t i o n Sy stem/3 Softwa relAdapter
ENo r+>
+
A C KI i r r ] i l t l t t a l t , / a l t o | { a u t t ) l l l i i t t c )
n , r
-r
E.+>
B
A O I <
D a t a T r >
B
<r
A C K- l ) r r i l r t r t
t c F I S i C t i l r : 1 { . r r l o r , J l r L . ' r ' f t , r ' . 1 ' , i ' t ' t
D a t . t
r + >
E X<-
A C KE O T
+>
+r ENo
A C K
r+
A C K
.+
' l n l t L r t f r o r r B S C l r l t ; l
( . r r l l ' r l l l , t l r e u t f , l r , , f l , , 1 , j , '
L n e i r t r a l r z a t i o n l a L r l o r n a t i t : )
+r ior
' C a u s t : se n t l o f f l r : t o r B S C f l e
R e c e i v e / T r a n s m i t
S y s t e m / 3 T r a n s m i t / R e c e r v e S t a t i o n System/3 Sof tware/Adapter
+ F N o
ACK +>
L I r r | r r r I . , l r z l l r O r r ( J u t o m d l t C )
+ D a t a
T ---+ ' + v
A C K +
' l n p u t
f r o n r ts S C f il t : 1
( . r r t t O t r r a l i r a t I t r , , r v l r r l g ' \
+r
E N o +
E O T
A C K
<r
D a t a E
r r+>
B
+
A C KC a u s u s l n d o l t r l e to r t s S C t r l e
* O u t p u t
t o B S C f i l e n ( a u t o m a t i c a c k n o w l e d g e )
L i n e in i t i a l i z a t i o n ( a u t o m a t i c )
F
D a t a T +
+ A C K
E o r +
' E r r r l o { l o l r
S v s t c n r / 3 R P ( i I I I n t c r J a c c t o l l S ( ' L i t t c P r o t o c o l 9 7
L E A S E D M U L T I P O I N T , S Y S T E M / 3 T R IB U T A R Y S T A T I O N R e c e i v e
System/3 Software/Adapter S y s t e m i 3 C o n t r o l T r a n s m i t t i n g S t a t i o n
L i n e in i t i a l i z a t i o r ] ( a u t o r n a t r c )
+ A r l r / r s e q E N o
- l n p u t f r o m B S C l i l e { a u t o m a t i c a c k r ro w l t ' t l g . )
* C a u s e s
e n c J o f f i l e t o r B S C li l e
T r a n s m i t
S y s t e m / 3 C o n t r o l R e c e i v i n q S t a t i o n System/3 Software/Adapter
Polllng seq ENO L i n e in i t i a l i z a t i o n ( 6 u 1 s m s 1 i 6 )
' O u t p u t
t o B S C f i l e : ( a u t o m a t i c a c k n o w l e d q e ;
' E n c l o f j o b
S y s t c n r / 3 R P G I I I n t c r f l c c t o t s S ( ' l- i n c P r o t o c o l
T r a n s m i t . R e c e i v e
S y s t e m / 3
C o n t r o l R e c e i v e /
T r a n s m i t S t a t i o n System/3 Software/Adapter
P o l l i r r g s e q E N O L i n e in i t i a l i z a t i o n ( a u t o r r a t i c )
" O u t p u t t o B S C f i l e 1 { a u t o m a t i c a c k r r o w l e d g e )
Arltlr setl ENA
" l n p u t B S C f i l e n
( a u t o m d t r c a c k r r o w l e d g e )
L i n e i n i t i a l i z a t i o r - r ( a u t o m a t i c )
* C a u s e s
e n d o f f i l e f o r B S C f i l e n
R e c e i v e , T r a n s m i t
C o n t r o l T r a n s m i t /
R e c e i v e S t a t i o n System/3 Software/Adapte r
A ( / r / r S C ( / tl \ U L i n e in i t i a l i z a t i o n ( a u t o m a t i c )
" I n p u t fr o m B S C f i l e 1
PollrngserT ENO
* C a u s e s
e n d o f f i l e f o r B S C f i l e 1
* o u t p u r
t o B S C f i l e /l ( A u t o m a t i c a c k n o w l e d g e ) L i n e in i t i a l i z a t i o n ( a u t o m a t i c )
' E n d o f j o b
S y s t e n r / 3 I { P ( i I l I n t c r l a c e to B S ( ' L i n e P r o t o c o l
P O I N T T O P O I N T S W I T C H E D L I N J E
l D S E O : S W I T C H E D L I N E S T A T I O N I D E N T I F I C A T I O N S E O U E N C E O P T I O N A L Receive, System/3 Answer Station
System/3 Software/Adapter
L ' n " r r t i t i a l r z a t i o r t ( i i u t o m d t i c )
' l n p u t
f r o m B S C t i l e ( a u t o m a t i c a c k r r o w l e d g e )
' C a u s e s
e n c l o f f i l e f o r B S C f i l e
S y s t e m / 3 T r a n s m i t S t a t i o n
l D s r : r t I E N O
l l D s e q l a s 6 +
D L E E O T
Receive, System/3 Catling Station
T r a n s m i t S t a t i o n System/3 Software/Adapter
l l D s e q l E N o r + >
I l D s e q ] A C K
L i n e in i t i a l i z a t i o n ( a u t o m a t i c )
* I n p u t f r o m B S C f i l e ( a u t o m a t i c a c k n o w l e d g e )
< T D L E E O T
* C a u s e se n d o f f i l e f o r B S C f i l e
S y s t c m / 3 R P G I l l n t e r l a c e to B S C L i n e P r o t o c o l 1 0 3
Transmit, System/3 Answer Station
S y s t e m / 3 R e c e i v e S t a t i o n Svstem/3 Sof twa relAdapter
L I D s e q l E N O
l l D s e q l A C K r >
I i n c i n i t i a l i z a t i o r r ( a u t o m a t i c )
' O u t p u t
t o B S C f i l e ( a u t o m a t i c a c k n o w l e d g e )
D L E E O T
' E n d o f j o b
T r a n s m i t , S y s t e m / 3 C a l l i n g S t a t i o n
S y s t e m / 3 | R e c e i v e S t a t i o n System/3 Sof tware/Adapter
L i n e in i t i a l i z a t i o n ( a u t o m a t i c )
l l D s e q l E N o +
l l D s e c r I A C K
' O u t p u t
t o B S C f i l e { a u t o n r a l i c a r ; k r ro w l l d g e )
D L E E O T +
* E n c l o { y o b
S l r t e r u / . 1 l ( P ( i ll I r r t . r l ; r , , ' l , ' l i s ( l . r t r ' l ' r , , t ' , r ' , ) l
T r a n s m i t / R e c e i v e , S y s t e m / 3 C a l l i n g S t a t i o n
R e c e i v e / T r a n s m i t S t a t i o n System/3 Sof twa relAdapter
l l D s e q l E N o t +
< - l l D s e q l A C K
L i n e i n i t i a l i z a t i o n ( a u t o m a t i c )
' O u t p u t
t o B S C f i l e 1 ( a u t o m a t i c a c k n o w l e d g e )
* I n p u t f r o m B S C f i l e n ( a u t o m a t i c a c k n o w l e d g e )
L i n c i n i t i a l i z a t r o r r ( a u t o m a t i c )
' C a u s e s
e n d o f f i l e f o r B S C f i l e n
< T D L E E O T
T r a n s m i t / R e c e i v e , S y s t e m / 3 A n s w e r S t a t i o n
R e c e i v e / T r a n s m i t S t a t i o n System/3 Software/Adapter
l l D s c q l E N O
I lD s e q 1 a g 6 r >
L i n e in i t i a l i z a t i o n ( a u t o m a t i c )
' O u t p u t
t o B S C ti l e 1 { a u t o m a t i c a c k n o w l e t l l e }
' l n p u t
f r o m B S C f i l e r r ( a u t o m a t i c a c k n o w l e d g e )
L i n e i n i t i a l i z a t i o n ( a u t o r n a t i c )
+ r D L E E o r
' C a u s e se n d o f f i l e f o r B S C f i l e r r
S v s t e r n / 3 l { P ( i I I I r r t c r l u e c t o I J S ( ' L i n c P r o l o c r r l
R e c e i v e / T r a n s m i t , S y s t e m / 3 A n s w e r S t a t i o n
T r a n s m i t / R e c e i v e S t a t i o n Sy stem/3 Software/Adapter
+ - l l D s e q l E N O l l D s e q l A C K r +
<r Dara
L i n c ' i n i t i a l i z a t i o n (a u t o m a t i c )
' l n p u t
f r o m B S C ti l e ' 1 ( a u t o m d t r c a c k n o w l c d g e )
* C a u s e s
e r r d o , f f i l e f o r B S C f i l e 1
" O u t p u t t o B S C f i l e r r ( a u t o m a t i c a c k n o w l e c i g e ) L i n e i r . r i t i a l i z a t i o n (a u t o m a t i c )
D L E E O T
' E r r d o f j o b
R e c e i v e / T r a n s m i t , S y s t e m / 3 C a l l i n g S t a t i o n
T r a n s m i t / R e c e i v e S t a t i o n System/3 Sof tware/Adapter
l l D s e q l E N o r +
< r l D s e q l A C K
{- Data
L i n e in i t i a l i z a t i o n ( a u t o m a t i c )
' l n p u t
f r o m B S C f i l e 1 ( a u t o m a t i c a c k n o w l e c l g e )
" C a u s e s e n d o f f i l e f o r B S C f i l e ' l ' O u t p u t
t o B S C f i l e rt ( a u t o r n a t i c a c k n o w l e d g e ) L i n e in i t i a l i z a t i o n ( a u t o m a t i c )
D L E E O T
* E n c l o f 1 o b
S y s t c n r / 3 I l l ' ( l l l l n t e r l ' a c c t o l l S ( ' l - i t r t P r o t o c o l
C O N V E R S A T I O N A L M O D E R e c e i v e w i t h C o n v e r s a t i o n a l R e p l y
System/3 Receive T r a n s m i t t i n g S t a t i o n System/3 Sof tware/Adapter
f enro
lqK_ +>
L i r r e i n i t l a l i z a t i o n ( a u t o m a t i c )
{r DArA i
X
ACK +
-t, 11-,ynTa
i
E
DArA r -)
X
_ ^ _
-5 t r
T T
f onrn
rf>
<r DArA
E T X A C K
E T X
f eor
- l n p u t B S C fi l e
( a u t o m a t i c a c k n o w l e d g l e )
- O u t p u t
c o n v e r s a t i o n a l r e s p o n s e ( a u t o m a t i c a c k n o w l e d g e )
" l n p u t B S C fi l e
( a u t o m a t i c a c k n o w l e d g e )
* C a u s e s
e n d - o f - f i l e o n B S C f i l e
T r a n s m i t w i t h C o n v e r s a t i o n a l R e p l y
S y s t e m / 3 T r a n s m i t R e c e i v i n g S t a t i o n System/3 Sof tware/Adapter
E N O
->
E _ _ _ _ _ t _ T : _
DATA T -)>
X
E
+ DATA T
X
A C K
rf>
+I
TX E T X
L i n e i n i t i a l i z a t i o n ( a u t o m a t i c )
* O u t p u t
t o B S C f i l e ( a u t o m a t i c a c k n o w l e d g e )
* I n p u t c o n v e r s a t i o n a l r e p l y ( a u t o m a t i c a c k n o w l e d g e )
E DATA T
X
+>
fr no<
E O T
+>
* O u t p u t
t o B S C f i l e ( a u t o m a t i c a c k n o w l e d g e )
* E n d o f j o b
S y s t e m / 3 R P G I I l n t e r f a c e t o B S ( - - L i n e P r o t o c o l
P a s e o f SC21-7507-5 l s s u e d 2 4 S e p t e m b e r 1976 B y T N L : S N 2 1 - 5 4 2 8
L I N E C O N D I T I O N * S Y S T E M / 3 R E S P O N S E S Data Mode, System/3 Transmitting
System/3 R e c e i v i n g S t a t i o n System/3 Software/Adapter
D a t a
+
+ WACK
ENo r+
+ ACK
---j
* O u t p u t
f r o m B S C f i l e ( a u t o m a t i c a c k n o w l e d g e ) System/3 recovery (automatic)
TTD I+
V+ N A K
Data .+
; ? A U N
* O u t p u t
f r o m B S C fi l e ( a u t o m a t i c a c k n o w l e d g e )
System/3 recovery (automatic)
Datal r>
+ N A K
Datal r>
<. ACK
4' ,t
* O u t p u t
f r o m B S C f i l e
System/3 recovery (automatic)
Data2
+
< r A C K O ( w r o n g A C K )
E N o +
< r A C K 0 ( w r o n s A C K )
Data2 r)
+ A C K I
* O u t p u t
f r o m B S C f i l e
System/3 recovery (automatic)
v ' v
tt2
Data Mode, System/3 Transmitting (continued)
P a g e o f S C 2 1 - 7 5 0 7 - 5 lssued 24 September lg76 B y T N L : S N 2 1 - 5 4 2 8
R e c e i v i n g S t a t i o n
T i m e - o u 1
D a t a 3
* O u t p u t
f r o m B S C f i l e
System/3 recovery (automatic)
+ A C K o r R V I
* O u t p u t
f r o m B S C f i l e
S e t s S y s t e m / 3 r e c o r d a v a i l a b l e i n d i c a t o r
* I n p u t t o B S C f i l e
System/3 permanent error condition while in transmit mode
E O T o r D L E E O T r + >
' * C a u s e s
e r r o r in d i c a t o r s e t if a s s i g n e d f o r B S C f i l e . o t h e r w i s e h a l r s .
+ E O T o r D L E E O T
* O u t p u t
f r o m B S C f i l e
* C a u s e s
e r r o r i n d i c a t o r s e t i f a s s i g n e d f o r B S C f i l e . o t h e r w i s e h a l t s .
S y s t e m / 3 R P G I I I n t e r i a c e t o B S C L i n e P r o t o c o l 1 1 3
114
Page of SC21 -75O7-5 lssued 24 September 1976 B y T N L : S N 2 1 - 5 4 2 8
Data Mode, System/3 Receiving
System/3 Softwa relAdapter
* I n p u t f r o m B S C f i l e ( a u t o m a t i c a c k n o w l e d g e )
System/3 recovery (automatic)
I n p u t f r o m
System/3 recovery (automatic)
T i m e - o u t
f errro
* l n p u t
f r o m B S C f i l e
System/3 recovery (automaticl
I n p u t fr o m B S C f i l e
System/3 recovery (automatic)
System/3 permanent error condition while in receive mode
* l n p u t f r o m B S C f i l e
*Causes
error indicator set if assigned for BSC file, otherwise halts'
E O T o r D L E E O T +
< r E O T o r D L E E O T
*Causes
error indicator set if assigned for BSC file, otherwise halts.
- f h i s
g 1 o s s r r y c o n t a i n s s o r n c t e r m s t h a t a r e u s e d i n t l i i s r n a n u l l . D a t a p r o c e s s i n g a n d o t l i e r c o m r n u n i c a t i o n s t e n n s rLfc defined in IBful Data Prot'cssing Glossar.l', GCl0- 1699.
a d d r e s s i n g : A r e q u e s t f r o m t l ' r e c o n t r o l s t a t i o n t o a t r i b u t a l y s t a t i o n t o r e c e i v e d a t a .
autoanswer: A rnaclrine I-eatule that allows a called station to respond automatically to a call it receives over a switched
I l l l c .
data link message: Data sent through BSCA using either F B C D I C o r A S C I I c o d e
data mode: A time at which the BSCIA is transrnitting or receiving characters on the line.
data set: See rnotlem.
disconnect timeout: An indication that tire BSCA station you were comnrunicating with has gone on hook or hung up EBCDIC transparency: A provision that allows BSCA to
scnd and receive messages containing any or all of the 256
c h a r a c t e r c o r n b i n a t i o n s i n t h e E B C D I C c o d e . in c l u d i n g d a t a l i n k c o n t r o l c h a r a c t e r s .
error history file: A push-down stack of the lasr BSCA c r r o r s th a t h a v e o c c u r r c d .
half rate: A rnodenr 1-eature that provides for transrnitting or rcceiving data at one-half the normal rate.
host: See utntrol station.
intermediate block check (lTB) : A provision that allows lbr parity checking on each logical record rather than the total bul'fer when large buffcrs of data are received.
fine controf characters: See tlata link control t'haracters.
m a n u a l a n s w e r : T h e r n a c h i n c o p e r a t o r r n a k e s t h e d a t a s e r re a 0 y .
m a n u a l d i a l : D i a l i n g is p e r l b r r n e d b y t h e n t a c h i n c o p e r a t o r . m a s t e r : T h e B S C A s t a t i o n t h a t i s t r a n s u r i t t i n g .
( i l o s s r r r ' I l - 5
modem: A haidware box used to connect the BStl has the ability to monitor the transmission line at all tirnes f or activitl, or data that nay be directed to it.
nonswitched line: A conrlnunication link between a remote station and computer that does not have to be established by dialing.
op end interrupt: A hardware-generated interrupt used to indicate the completion of the soliware-initiated BSCA input/output operations.
point-to-point data link: A communications facility that connects a single remote station to the computer.
polling: A request frorn the control station to a tributary station to transmit data. Once the tributary station has accepted the invitation, through recognition of its polling characters sent by the control station, the remote station may use the line to send data.
receive timeout: An indication that no data has been received by this BSC adapter in a given tirne.
receive initial: A software command to allow the BSC adapter to receive synchronization characters.
receive mode: A tirne during which the BSC adapter looks flor synchronization characters and then stores the data characters in main storage.
remote terminals: lnterconnected equipment at a renlote location having either input or output capabilities or both.
reverse interrupt: A metl.rod of sending data records from c,ne BSCA station to another station before receivins end-ol-file indication fronr the other station.
slave: The BSCA station that is receivins.
standby line: A rnodern I'eature that allows a point-to-proint lease d line ntodern to also function on a point-to-point switched line.
station: Any of the computers. terminals. or devices that use the communication facilities.
switched line: A comrnunication line in which the connec-tion between the computer and a rernote station is
established by dialing.
transparency : See EBCDIC transparency.
transparent mode: A BSC adapter rnode initiated by the sequence DLE STX.
tributary station: A secondary or noncontrolling device in a multipoint telecomlnunications configuration.
wrap test: A diagnostic procedure that transnrits a specilic character pattern to or through the nrodem in a loop and then compares the character pattern received to what was transmitted. It is used when unrecoverable BSCA hardware e r r o r s o c c u r .
a c c e s s l i n e s - 5 p a t a Communication System (2770) I,57
a d d i t i o n a l a r e a e n t r y 1 4 d a t a t b r m a t s 1 5
a d d r e s s i n g 5 6 a t a l i n k
a d d r e s s i n g c h a r a c t e r s 5 2 , 5 4 c o n t r o l 6
a d d r e s s i n g c h a r a c t e r s e n t r y 1 3 c o n t r o l c h a r a c t e r s 6 , 4 9
Arnerican National Standard Code tbr message codes 6
I n l b r m a t i o n I n t e r c h a n g e 6 , 4 7 m e s s a g e t b r m a t s 6
cor.nbined f-tle 14 Flrtendeti Binary Coded Decimirl Interchange
c o m r r e n t s l i n e e n t r y 9 C o c l e 6 , 4 9
i d e n t i f i c a t i o n p t r i n t - t r r - p o i n t s u i t c h e c l li n e
t r a n s m i t a l 1 l e . th e n r e c e i v e a file program 31 t r a n s m i t a n t l r e c e i v e (n o c o n v e r s a t i o n a l r e p l y ) 3 l t r a n s m l t i n t e r s p e r s e d w i t h r e c e i v e p r o g r a n l 4 l t r a n s m i t o n l y p r o g r a m 24
t r a n s m i t r v i l h r e c e p t i o n o f c o n v e r s a t i o n a l r e p l y p r o g r a m 2 7 t r a n s p a r e n c y e n t r y 9
t r a n s p a r e n c y . l . . t s C D I C 6 t r i b u t a r y s t a t i o n 5 r y p e o r
c o d e e n t r y 9 c o n t r o l e n t r y 9 s t a t i o n e n t r y 9
n a i t t i n i e e n t r y 1 2
2 7 7 0 D a t a C o n i m u n i c a t i o n System l. 57 2 7 8 0 D a t a l l r a n s m i s s i o n T e r m i n a l 1 , 5 7 3 7 4 1 D a t a S t a t i o n 1 5
3 7 5 0 S ' " v i t c h i n g S y s t e m B 9
l n d r ' x I l 9
s c 2 1 - 7 5 0 7 - l ;
? E E
-= : -= r -=
I n t e r n a t i o n a l B u s i n e s s M a c h i n e s C o r p o r a t i o n G e n e r a l S y s t e m s D i v i s i o n
a r 7 7 5 D G l e n r i d g e D r i v e N . E "
A t l a n t a , G e o r g i a 3 0 3 C i ( U S A O n l y )
I B M \ [ , o r l d T r a d e C r : r p o r a t i o n
8 2 1 L j n i t e d N a t i o n s P l a z a , N e w Y o r k . N e w Y o r k 1 0 0 1 7 ( l n t e r n a t i o n a l )
F
a
: .
@
=
U>C
N}
\,1
! iJr
R E A D E R ' S C O M M E N T F O R M
I B M S y s t e m / 3
R P G | | T e l e c o m m u n i c a t i o n s P r o g r a m m i n g
R e f e r e n c e M a n u a l
s c 2 1 - 7 5 0 7 - 5
Y O U R C O M M E N T S . P L E A S E . . .
Y o u r c o m m e n t s a s s i s t u s i n i m p r o v i n g t h e u s e f u l n e s s o f o u r p u b l i c a t i o n s ; t h e y a r e a n r m p o r r a n r p a r t of the input used in preparing updates to the publications. All comments and suggesttons b e c o m e t h e p r o p e r t y o f l B M .
P l e a s e d o n o t u s e th i s f o r m f o r t e c h n i c a l q u e s t i o n s about the system or for requests f o r a d d i t i o n a l p u b l i c a t i o n s ; t h i s o n l y d e l a y s t h e r e s p o n s e . I n s t e a d , d i r e c t y o u r i n q u i r i e s o r r e q u e s t s t o y o u r I B M r e p r e s e n t a t i v e o r t o t h e I B M b r a n c h o f f i c e s e r v i n g y o u r l o c a l i t y .
C o r r e c t i o n s o r c l a r i f rc a t i o n s n e e d e d ;
Page Comment
l , e o u l r l l i k e a r e p l y . I N a m e ,
A c l d r e s s
O T h a n k y o u f o r y o u r c o o p e r a t i o n - N o p o s t a g e n e c e s s d r y i f m a i l e d rn t h e U . S . A
I
nq-;\q-\ n /