ISO/IEC 13247:1997 情報技術—システム間の電気通信と情報交換—ブロードバンドプライベート統合サービスネットワーク—交換信号プロトコル—基本的な通話/接続制御 | ページ 6

4.3.1

ATM endsystem address

the address of a point of attachment to an ATM network.

4.3.2

broadband private integrated services network

B-PISN

a PISN that offers ATM services to its users and employs ATM transmission between PINXs and ATM switching.

4.3.3

call

an association between two or more users for the use or attempted use of a telecommunication service.

4.3.4

call/connection

a call combined with a single connection in the user plane for the transfer of user information.

4.3.5

en bloc

a method of signalling the called party number information in which all called party number digits are sent in the first message.

4.3.6

gateway PINX

within the context of a call/connection, a PINX which performs interworking between B-QSIG and another signalling system.

4.3.7

incoming call/connection

a call/connection using an IPL from the point of view of the succeeding side of that IPL.

4.3.8

incoming gateway PINX

a Gateway PINX that routes a call/connection from a route employing another signalling system on to an IPL employing B-QSIG signalling.

4.3.9

information element

a component of a message.

4.3.10

information element with invalid contents

an information element that is recognized, but whose contents cannot be interpreted as valid using the rules specified in clause 8 of this International Standard, or that contains field values that are marked as «reserved» in clause 8 of this International Standard.

4.3.11

inter-PINX link

IPL

a link between the Q reference points of two PINXs, the link comprising a signalling IPVC together with one or more user information IPVCs under the control of that signalling IPVC.

4.3.12

inter-PINX virtual channel

IPVC

one of a number of bi-directional transfers of digital information, multiplexed at the ATM layer, between two PINXs.

Note 1 to entry: An IPVC can be a single virtual channel or a concatenation of virtual channels.

4.3.13

inter-PINX virtual channel identifier

IPVCI

an integer that identifies an IPVC within the context of an IPVP.

4.3.14

inter-PINX virtual path

IPVP

a grouping of one or more IPVCs within a single IPL.

4.3.15

inter-PINX virtual path identifier

IPVPI

an integer that identifies an IPVP within the context of an IPL.

4.3.16

interworking PINX

within the context of a call/connection, a PINX that performs interworking between a B-PISN and a N-PISN.

Note 1 to entry: An interworking PINX will also be either an Originating PINX, a Terminating PINX or a Gateway PINX.

4.3.17

narrow-band private integrated services network

N-PISN

a PISN that offers only 64 kbit/s-based services to its users.

4.3.18

originating PINX

within the context of a call/connection, the PINX to which the calling user is attached.

4.3.19

outgoing call/connection

a call/connection using an IPL from the point of view of the preceding side of that IPL.

4.3.20

outgoing gateway PINX

a Gateway PINX that routes an incoming call/connection from an IPL employing B-QSIG signalling on to a route employing another signalling system.

4.3.21

overlap

a method of signalling the called party number information in which not all called party number information is sent in the same message.

4.3.22

preceding PINX

within the context of a call/connection using an IPL, the PINX to which the preceding side of the IPL belongs, from the point of view of the PINX to which the succeeding side of the IPL belongs.

4.3.23

preceding side

in the context of a call/connection using an IPL, the side that initiates call/connection establishment over that IPL.

4.3.24

public broadband ISDN

public B-ISDN

a public ISDN that offers ATM services to its users and employs ATM transmission and switching.

4.3.25

public integrated services digital network

public ISDN

a network that provides to the general public a range of different telecommunication services using digital connections.

4.3.26

public narrow-band ISDN

public N-ISDN

a public ISDN that offers to the general public only 64 kbit/s-based services.

4.3.27

side

the Protocol Control entity in a PINX at one end of an IPL.

4.3.28

signalling AAL

SAAL

the AAL used for the bi-directional transfer of layer 3 signalling information.

4.3.29

succeeding PINX

within the context of a call/connection using an IPL, the PINX to which the succeeding side of the IPL belongs, from the point of view of the PINX to which the preceding side of the IPL belongs.

4.3.30

succeeding side

in the context of a call/connection using an IPL, the opposite side from the side that initiates call/connection establishment over that IPL.

4.3.31

terminating PINX

within the context of a call/connection, the PINX to which the called user is attached.

4.3.32

transit PINX

within the context of a call/connection, any PINX through which the call/connection passes, excluding any Originating PINX, Terminating PINX, Incoming Gateway PINX or Outgoing Gateway PINX.

4.3.33

unexpected message

within the context of a particular Protocol Control state, a message that is recognized, but for which no procedures are defined in 9.6 of this International Standard (or in any other Standard relating to B-QSIG to which the PINX claims conformance) for receipt in that Protocol Control state.

4.3.34

unrecognized information element

an information element received in a particular message which is not specified as part of that message in clause 7 of this International Standard or in any other Standard relating to B-QSIG to which the PINX claims conformance (e.g., a Standard specifying generic procedures for supplementary services).

Note 1 to entry: The handling of national/private information elements is outside the scope of this International Standard (see annex H).

4.3.35

unrecognized message

a message that is not specified in clause 7 of this International Standard or in any other Standard relating to B-QSIG to which the PINX claims conformance (e.g., a Standard specifying generic procedures for supplementary services).

Note 1 to entry: The handling of national/private messages is outside the scope of this International Standard (see annex H).

4.3.36

unspecified bit rate

UBR

an ATM service category for which no traffic-related service guarantees are specified.

4.3.37

virtual channel

one of a number of multiplexed, bi-directional transfers of digital data provided by the ATM layer across an interface between two ATM switching points.

4.3.38

virtual channel connection

a concatenation of virtual channels that extends between two points where the ATM adaptation layer is accessed.

Figure 1 — Illustration of terminology through example of a call/connection routed over two inter-PINX links