List Of Abbreviations - IBM 3745 Service Functions

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List of Abbreviations
A ampere BPC2 bus propagation card to replace the
abend abnormal end of task
TRM card
AC
1)
abandon call
bps bits per second
2) address compare BR bus request
3) alternating current
BSC binary synchronous communication
ACB
adapter control block
BT
branch trace
ACF Advanced Communications Function
BTAM Basic Telecommunications Access
ACK affirmative acknowledgment (BSC) Method
ACR
1)
add character register (instruction)
BTAM-ES BTAM extended support
2) abandon call request
BZl branch on Z latch (instruction)
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ACU automatic calling unit
C 1) Celsius
AE address exception
2) control (X.21 signal)
I
AEK address exception key CA channel adapter
II AFD airflow detector
CAB channel adapter board
AGC automatic gain control (signal) CAC common adapter code
AHR add halfword register (instruction) CACM channel adapter concurrent mainte-
I
AIO adapter-initiated operation
nance
'I
CAL channel adapter logic card
• I
AlC Airlines Line Control
I
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CADR channel adapter driver receiver card
AlU arithmetic and logic unit
AMD air moving device
CADRUK channel adapter driver receiver type
UK card
AR
add register
(instru~tion)
CADS channel adapter with data streaming
ARI add register immediate (instruction)
CATPS channel adapter with two-processor
AS
I ,
autoselection chain switch
II
ASCII American National Standard Code for CB circuit breaker
'I
Information Interchange
CCITT
Comite Consultatif International
I·
,.,
AXB adapter expansion block Telegraphique et Telephonique
110
B branch (instruction) CCMD current command (storage)
BAl branch and link (instruction)
CCN
communications controller node
BAlR
branch and link register (instruction) CCR compare character register (instruc-
BB branch on bit (instruction)
tion)
BCC
block check character (BSC)
CCU
central control unit
BCCA buffer chaining channel adapter
CCW channel command word
BCCW bit clock control word
CD carrier detector (signal)
BCD binary-coded decimal notation
CDF configuration data file
BCl
branch on C latch (instruction)
COG concurrent diagnostic
BCT branch on count (instruction)
CDS configuration data set (NCP/EP)
BER box event record
CE customer engineer
B/M bill of material
CEPT
Comite Europeen des Postes et Tele-
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communications
BPC1 bus propagation card to replace the
CHCW channel control word
CAL card
CHPID
channel path identification
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BM
Corp.
1969, 1990
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