PN-3421 (TIA/EIA/IS-95-A) Ballot Version Page 1-1
1 GENERAL
1.1 Terms and Numeric Information
1.1.1 Terms
Abbreviated Alert. An abbreviated alert is used to remind the mobile station user that previously
selected alternative routing features are still active.
AC. See Authentication Center.
Access Attempt. A sequence of one or more access probe sequences on the Access Channel
containing the same message. See also Access Probe and Access Probe Sequence.
Access Channel. A Reverse CDMA Channel used by mobile stations for communicating to the base
station. The Access Channel is used for short signaling message exchanges such as call originations,
responses to pages, and registrations. The Access Channel is a slotted random access channel.
Access Channel Message. The information part of an access probe consisting of the message body,
length field, and CRC.
Access Channel Message Capsule. An Access Channel message plus the padding.
Access Channel Preamble. The preamble of an access probe consisting of a sequence of all-zero
frames that is sent at the 4800 bps rate.
Access Channel Request Message. An Access Channel message that is autonomously generated by
the mobile station. See also Access Channel Response Message.
Access Channel Response Message. A message on the Access Channel generated to reply to a
message received from the base station.
Access Channel Slot. The assigned time interval for an access probe. An Access Channel slot
consists of an integer number of frames. The transmission of an access probe is performed within the
boundaries of an Access Channel slot.
Access Overload Class. See Overload Class.
Access Probe. One Access Channel transmission consisting of a preamble and a message. The
transmission is an integer number of frames in length and transmits one Access Channel message.
See also Access Probe Sequence and Access Attempt.
Access Probe Sequence. A sequence of one or more access probes on the Access Channel. The
same Access Channel message is transmitted in every access probe of an access attempt. See also
Access Probe and Access Attempt.
Acknowledgement. A Layer 2 response by the mobile station or the base station confirming that a
signaling message was received correctly.
Action Time. The time at which the action implied by a message should take effect.
Active Set. The set of pilots associated with the CDMA Channels containing Forward Traffic
Channels assigned to a particular mobile station.
Aging. A mechanism through which the mobile station maintains in its Neighbor Set the pilots that
have been recently sent to it from the base station and the pilots whose handoff drop timers have
recently expired.
A-key. A secret, 64-bit pattern stored in the mobile station and HLR/AC. It is used to
generate/update the mobile station 誷 Shared Secret Data. The A-key is used in the mobile station
authentication process.
Analog Access Channel. An analog control channel used by a mobile station to access a system to
obtain service.
Analog Color Code. An analog signal (see Supervisory Audio Tone) transmitted by a base station
on an analog voice channel and used to detect capture of a mobile station by an interfering base station
or the capture of a base station by an interfering mobile station.
Analog Control Channel. An analog channel used for the transmission of digital control
information from a base station to a mobile station or from a mobile station to a base station.
Analog Paging Channel. A forward analog control channel that is used to page mobile stations and
send orders.
Analog Voice Channel. An analog channel on which a voice conversation occurs and on which
brief digital messages may be sent from a base station to a mobile station or from a mobile station to a