AAL

ATM Adaptation Layer

AC

Application Context

ACK

Acknowledgement

ACM

Address Complete Message

ACSE

Association Control Service Element

ACU

Acknowledgement Signal Unit

AE

Application Entity

AL

Alignment

ANS

Answer

AP

Application Part

APDU

Application Protocol Data Unit

ARP

Address Resolution Protocol

ASE

Application Service Element

ATM

Asynchronous Transfer Mode

AU

Access Unit

B

Broadband

BA

Buffer Allocation

BA

Basic Access

BC

Bearer Control

BIB

Backward Indicator Bit

B-ISDN

Broadband ISDN

B-ISUP

Broadband ISDN User Part

BSN

Backward Sequence Number

BSS

Base Station System

B-STP

Broadband Signal Transfer Point

BT

Beginning Tag

C

Confirmed

C/R

Command/Response

CAS

Channel Associated Signalling

CC

Call Control

CC

Connection Confirm

CC

Credit Card

CCBS

Completion of Call to a Busy Subscriber

CCF

Call Control Function

CCITT

International Telegraph & Telephone Consultative Committee

CCS

Common Channel Signalling

CCSS6

Common Channel Signalling System No. 6

CCSS7

Common Channel Signalling System No. 7

CD

Call Deflection

CDMA

Code Division Multiple Access

CFB

Call Forwarding on Busy

CFNR

Call Forwarding on No Reply

CFU

Call Forwarding Unconditional

CIC

Circuit-Identity Code

CLB

Clear Back

CLF

Clear Forward

CLI

Calling Line Identity

CLIP

Calling Line Identification Presentation

CLIR

Calling Line Identification Restriction

CLP

Cell Loss Priority

CM

Configuration Management

CMIP

Common Management Information Protocol

Comp

Component

Con

Confirmation

CPCS

Common Part Convergence Sub-Layer

CPI

Common Part Identifier

CR

Circuit Related

CR

Connection Request

CR

Call Reference

CRC

Cyclic Redundancy Check

CS

Capability Set

CS

Convergence Sub-Layer

CUG

Closed User Group

CVI

Circuit Validation Test Indication

CVT

Circuit Validation Test

DC

Direct...