June 30, 2008 AT Commands Reference Manual Acr & Abbr-1
Acronyms and Abbreviations
Abbreviation Full Name
AACCH AT Command Channel - Used for AT-commands, TCP/IP, Internal-GPRS session,
Voice-Call, and SMS applications
AAOC Advice of Charge
AAPN Access Point Name
AASCII A standard seven-bit code character set
AATA AT command for call answer
AATD AT command for call originating
AATH AT command for Hanging-up a call
AATO AT command to return to Data mode after temporarily exiting by ESC
BBM Broadcast Message
CCA A certificate authority or certification authority is an entity which issues digital certificates
for use by other parties. It is an example of a trusted third party.
CCB Cell Broadcast
CCBM Cell Broadcast Message
CCDS Call Data Services (External-GPRS session, CSD session, FAX session)
CCertificate A public key certificate (or identity certificate) is a certificate which uses a digital
signature to bind together a public key with an identity - information such as the name of a
person or an organization, their address, and so forth. The certificate can be used to verify
that a public key belongs to an individual.
CCipher Suite A set of cryptographic algorithms. A cipher suite specifies one algorithm for each of the
following tasks: Key exchange, Bulk encryption and Message authentication.
CCSD Circuit-switched Data
CCSNS Single Numbering Call Scheme
CCTS Clear to Send
CCTS RS232 pin used for HW flow control. The MGOM uses this pin to stop data transmission
from the DTE (on the TXD pin).

A

B

C