3 Definitions and abbreviations

37.4623GPPIuant interface: Signalling transportRelease 17TS

3.1 Definitions

For the purposes of the present document, the following terms and definitions apply.

ASCII character: A character forming part of the International Reference Version of the 7-bit character set defined in ISO/IEC 646:1991 represented as one octet

Octet: 8 bits as used in ISO/IEC 13239 [2]

Device type: One octet identifying the type of a device

Unique ID: A concatenation of the vendor code (2 octets) and a 1 to 17 octets long unit specific code (e.g. serial number) exclusive for each secondary device from the vendor to whom the vendor code is assigned. The vendor code is placed in the left-most (most significant) position of the unique ID. The vendor to whom the vendor code is assigned is responsible for ensuring the uniqueness of the unique ID for each device.

Vendor code: A unique ASCII 2-character code assigned to each vendor in AISG v2.0 [4].

Reset: A process by which the device is put in the state it reaches after a completed power-up

SecondaryPayloadTransmitLength: The maximum length of the INFO field of an HDLC I-frame in the direction secondary device to primary device.

SecondaryPayloadReceiveLength: The maximum length of the INFO field of an HDLC I-frame in the direction primary device to secondary device.

3.2 Abbreviations

For the purposes of the present document, the following abbreviations apply:

ADDR Address

ACK Acknowledgment

CRC Cyclic Redundancy Check

DISC Disconnect (frame type)

DM Disconnected Mode (frame type)

FCS Frame Checking Sequence

FI Format Identifier

FRMR Frame Reject (frame type)

GI Group Identifier

GL Group Length

HDLC High-Level Data Link Control

I Information (frame type)

ID Identifier

INFO Information (field name)

NAK Non Acknowledgment

NRM Normal Response Mode

P/F Poll/Final

PI Parameter Identifier

PL Parameter Length

PV Parameter Value

RET Remote Electrical Tilting

RETAP Remote Electrical Tilting Application Part

RNR Receive Not Ready (frame type)

RR Receive Ready (frame type)

SNRM Set Normal Response Mode (frame type)

TMA Tower Mounted Amplifier

TMAAP Tower Mounted Amplifier Application Part

TWA Two Way Alternate

UA Unnumbered Acknowledgement (frame type)

UNC Unbalanced Operation Normal Response Mode Class

XID Exchange ID (frame type)