ETSI ETS 300 175-9 ed.1 (1992-10)

SLOVENSKI STANDARD
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Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 9:
Public Access Profile (PAP)
Ta slovenski standard je istoveten z: ETS 300 175-9 Edition 1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 175-9
TELECOMMUNICATION October 1992
STANDARD
Source: ETSI TC-RES Reference: DE/RES 3001-9
ICS: 33.060
DECT
Key words:
Radio Equipment and Systems (RES);
Digital European Cordless Telecommunications (DECT)
Common interface
Part 9: Public access profile
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1992. All rights reserved.
New presentation - see History box

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ETS 300 175-9: October 1992
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 175-9: October 1992
Contents
Foreword.9
1 Scope .11
2 Normative references .11
3 Definitions and abbreviations.12
4 Features for the public access service .18
4.1 Description of the features.18
4.1.1 Speech.18
4.1.2 Bell on.18
4.1.3 Bell off. 18
4.1.4 Off-hook. 18
4.1.5 On-hook (full release).18
4.1.6 Partial release. 18
4.1.7 Dialled digits (basic) .18
4.1.8 Dialled digits (additional).19
4.1.9 Dialling delimiter .19
4.1.10 Dialling delimiter request .19
4.1.11 Register recall. 19
4.1.12 Go to DTMF .19
4.1.13 Go to pulse. 19
4.1.14 Pause (interdigit pause) .19
4.1.15 Specific trunk carrier selection. 19
4.1.16 Incoming call.19
4.1.17 Hold call .19
4.1.18 Re-connection of a held call .19
4.1.19 Forced re-connection.19
4.1.20 Authentication of portable part. 19
4.1.21 Authentication of user .20
4.1.22 Authentication of fixed part.20
4.1.23 Silent polling.20
4.1.24 Class of service field indication.20
4.1.25 Inter-operator roaming registration . 20
4.1.26 Control of supervisory tones. 20
4.1.27 Regular security handshake .20
4.1.28 Signalling of display characters.20
4.1.29 Display control characters.21
4.1.30 ZAP suspend .21
4.1.31 ZAP terminate.21
4.1.32 Alphanumeric text messaging and radiopaging service.21
4.1.33 Voice and user data traffic encryption activation/deactivation.21
4.1.34 Signalling traffic encryption activation/deactivation.21
4.1.35 Debit public access service. 21
4.1.36 Credit public access service. 21
4.1.37 Credit agency public access service .21
4.1.38 On-demand (hot-bill) public access service.22
4.1.39 Advice of tariff request.22
4.1.40 Advice of charge request . 22
4.1.41 Location registration for incoming calls, paging or messages .22
4.1.42 Location de-registration for incoming calls, paging or messages . 22
4.1.43 Queue management .22
4.1.44 Queue entry request. 22

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ETS 300 175-9: October 1992
4.1.45 Queue exit request .22
4.1.46 "Portable part inaccessible" indication .22
4.1.47 "In-range" indication.22
4.1.48 Emergency service access request.22
4.1.49 Indication of teleservices available request .23
4.1.50 Indication of teleservices available .23
4.1.51 Selection of service provider/network operator .23
4.1.52 Selection of required teleservice.23
4.1.53 Selection of bearer service.23
4.1.54 Validation of portable part user.23
4.1.55 Validation of portable part .23
4.1.56 Validation of identity module.23
4.1.57 User identification (UPI) .23
4.1.58 Group address.23
4.1.59 Selection of additional character sets.23
4.1.60 Data capability .23
4.1.61 Keypad protocol for supplementary services.24
4.1.62 Feature key management protocol for supplementary services .24
4.1.63 Functional protocol for supplementary services.24
4.1.64 Dial tone detection indication .24
4.1.65 Request for indication of (temporary) subscriber number.24
4.1.66 Portable part capability/fixed part capability data exchange .24
4.1.67 Subscription registration user procedure (on-air).24
4.1.68 Subscription registration user procedure (keypad).24
4.1.69 Subscription registration user procedure (DECT authentication module).24
4.1.70 Subscription data exchange (on-air) .24
4.1.71 Multicell fixed part coverage.24
4.1.72 Handover.25
4.1.73 Multiple subscription registration.25
4.1.74 All-physical-channel capability.25
4.2 Summary of DECT public access service facilities.26
5 Effect of the services on the DECT layers .27
5.1 Overview of the affected DECT layers .27
5.2 Mapping of the features.29
5.2.1 Speech.29
5.2.2 Bell on .29
5.2.3 Bell off.29
5.2.4 Off-hook.30
5.2.5 On-hook (full release) .30
5.2.6 Partial release.30
5.2.7 Dialled digits (basic) .30
5.2.8 Dialled digits (additional) .30
5.2.9 Dialling delimiter .30
5.2.10 Dialling delimiter request .30
5.2.11 Register recall.31
5.2.12 Go to DTMF .31
5.2.13 Go to pulse.31
5.2.14 Pause (interdigit pause) .31
5.2.15 Specific trunk carrier selection.31
5.2.16 Incoming call.31
5.2.17 Hold call.31
5.2.18 Re-connection of a held call.32
5.2.19 Forced re-connection.32
5.2.20 Authentication of portable part.32
5.2.21 Authentication of user .32
5.2.22 Authentication of fixed part.32
5.2.23 Silent polling.32
5.2.24 Class of service field indication .32
5.2.25 Inter-operator roaming registration.32

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ETS 300 175-9: October 1992
5.2.26 Control of supervisory tones. 32
5.2.27 Regular security handshake .33
5.2.28 Signalling of display characters.33
5.2.29 Display control characters.33
5.2.30 ZAP suspend .33
5.2.31 ZAP terminate.33
5.2.32 Alphanumeric text messaging and radiopaging service.33
5.2.33 Voice and user data traffic encryption activation/deactivation.34
5.2.34 Signalling traffic encryption activation/deactivation.34
5.2.35 Debit public access service. 34
5.2.36 Credit public access service. 34
5.2.37 Credit agency public access service .34
5.2.38 On-demand (hot-bill) public access service.35
5.2.39 Advice of tariff request.35
5.2.40 Advice of charge request . 35
5.2.41 Location registration for incoming calls, paging or messages .35
5.2.42 Location de-registration for incoming calls, paging or messages . 35
5.2.43 Queue management .35
5.2.44 Queue entry request. 36
5.2.45 Queue exit request .36
5.2.46 Portable part inaccessible indication .36
5.2.47 In-range indication .36
5.2.48 Emergency service access request. 36
5.2.49 Indication of teleservices available request. 36
5.2.50 Indication of teleservices available .36
5.2.51 Selection of service provider/network operator . 36
5.2.52 Selection of required teleservice. 36
5.2.53 Selection of bearer service.37
5.2.54 Validation of portable part user.37
5.2.55 Validation of portable part.37
5.2.56 Validation of identity module.37
5.2.57 User identification.37
5.2.58 Group address. 37
5.2.59 Selection of additional character sets.37
5.2.60 Data capability . 37
5.2.61 Keypad protocol for supplementary services . 37
5.2.62 Feature key management protocol for supplementary services .38
5.2.63 Functional protocol for supplementary services.38
5.2.64 Dial tone detection indication .38
5.2.65 Request for indication of (temporary) subscriber number.38
5.2.66 Portable part capability/fixed part capability data exchange . 38
5.2.67 Subscription registration user procedure (on-air).38
5.2.68 Subscription registration user procedure (keypad) .38
5.2.69 Subscription registration user procedure (DECT authentication module).38
5.2.70 Subscription data exchange (on-air).38
5.2.71 Multicell fixed part coverage. 39
5.2.72 Handover. 39
5.2.73 Multiple subscription registration.39
5.2.74 All-physical-channel capability. 39
6 Requirements regarding the network layer .39
6.1 Required procedures. 40
6.1.1 CC procedures.40
6.1.2 MM procedures. 40
6.1.3 COMS procedures . 40
6.1.4 CLMS procedures . 40
6.1.5 LCE procedures.41
6.1.6 Supplementary service procedures.41
6.1.7 Management procedures .41
6.2 Required messages in the PT and FT.41

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ETS 300 175-9: October 1992
6.3 Required mandatory information elements.46
6.3.1 Information elements in CC messages .46
6.3.2 Information elements in CISS messages .49
6.3.3 Information elements in MM messages .50
6.4 Coding of information elements in CC messages.53
6.4.1 Coding of mandatory information elements in CC messages .53
6.4.2 Coding of optional information elements in CC messages .54
6.5 Coding of information elements in MM messages.55
7 Requirements regarding the DLC layer.55
7.1 Control plane .55
7.1.1 Minimum requirements .55
7.1.2 Incoming call (feature 16).56
7.1.3 Alphanumeric text messaging and radiopaging service (feature 32) .56
7.2 User plane.56
8 Mandatory requirements regarding the MAC layer .56
8.1 MAC layer services .56
8.1.1 Connection oriented services.56
8.1.2 Broadcast services.56
8.2 MAC layer procedures.56
8.2.1 Connection oriented service procedures .56
8.2.1.1 General.56
8.2.1.2 Antenna diversity in connection oriented services.57
8.2.1.2.1 Q1 setting in direction PT to FT .57
8.2.1.2.2 Antenna change due to FT reception of Q1.57
8.2.1.2.3 Antenna change due to poor quality on slot received at FT.57
8.2.1.3 Information for handover.57
8.2.1.3.1 Q1 and Q2 setting in direction FT to PT.57
8.2.1.3.2 PT reception of Q1 and Q2 .57
8.2.2 Broadcast procedures .58
8.3 Scrambling.58
8.4 Required messages.58
8.4.1 Header field .58
8.4.2 Messages in the tail field.58
8.4.2.1 Identities information (N tail) .58
T
8.4.2.2 System information and multiframe marker (Q tail) .58
T
8.4.2.3 Paging (P tail).59
T
8.4.2.4 MAC control (M tails).59
T
8.4.3 Messages in the B-field.59
8.5 Monitoring of speech quality.59
9 MAC layer requirements for the optional features.59
9.1 Incoming call (feature 16).59
9.2 Alphanumeric text messaging and radiopaging service (feature 32) .60
9.2.1 Alphanumeric service via the MAC broadcast service (case A).60
9.2.2 Alphanumeric service via the MAC C/L downlink service (case B1).60
9.2.3 Alphanumeric service via the MAC C/L downlink and uplink services (case
B2).61
9.3 Encryption (features 33 and 34) .61
9.3.1 Connection oriented service procedures .61
9.3.2 System information and multiframe marker (Q tail).61
T
9.3.3 MAC control (M tails).62
T
9.4 Selection of bearer service (feature 53) .62
9.5 TARI request .62
9.5.1 Non-continuous broadcast procedure .62
9.5.2 MAC control (M tails).62
T
10 Requirements regarding the physical layer.62
10.1 General .62

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ETS 300 175-9: October 1992
10.2 Minimum Normal Transmit Power (NTP).62
10.3 Radio receiver sensitivity .62
10.4 Z-field .62
10.5 Sliding collision detection .63
11 Requirements regarding the speech transmission.63
11.1 General.63
11.2 User controlled volume control.63
11.3 PP ambient noise rejection capability feature. 63
Annex A (informative): Message sequence diagrams .64
A.1 Outgoing call establishment.64
A.2 Incoming call establishment.65
A.3 Release initiated by the fixed termination.65
A.4 Release initiated by the portable termination.66
A.5 Location registration.66
Annex B (informative): Set-up attributes codings. 67
History . 68

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ETS 300 175-9: October 1992
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ETS 300 175-9: October 1992
Foreword
This European Telecommunication Standard (ETS) has been produced by the Radio Equipment and
Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI), and
was adopted, having passed through the ETSI standards approval procedure (Public Enquiry 23: 1991-09-
02 to 1991-12-27, Vote 22: 1992-05-25 to 1992-07-17).
Annexes A and B to this ETS are informative.
Further details of the DECT system may be found in the ETSI Technical Report, ETR 015 [16] and ETR
043 [15], and also in the Draft Technical Report, "Digital European Cordless Telecommunications System
description document", [17].
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ETS 300 175-9: October 1992
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ETS 300 175-9: October 1992
1 Scope
This part of the Digital European Cordless Telecommunications, DECT Common Interface specifies that
set of technical requirements for DECT Fixed and Portable Parts necessary for the support of the Public
Access Service (PAS). It will also support other applications.
Apparatus for which DECT PAS capability is claimed shall comply with those technical requirements of this
part of the European Telecommunications Standard (ETS) which are identified as provision mandatory.
Apparatus claiming the provision of any optional service feature listed in this part of the ETS shall fully
comply with the corresponding process mandatory technical requirements.
2 Normative references
This European Telecommunication Standard (ETS) incorporates, by dated or undated reference,
provisions from other publications. These normative references are cited at the appropriate places in the
text and the publications are listed hereafter. For dated references, subsequent amendments to, or
revisions of, any of these publications apply to this only when incorporated in it by amendment or revision.
For undated references the latest edition of the publication referred to applies.
[1] ETS 300 175-1: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 1: Overview".
[2] ETS 300 175-2: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 2: Physical layer".
[3] ETS 300 175-3: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 3: Medium
access control layer".
[4] ETS 300 175-4: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 4: Data link
control layer".
[5] ETS 300 175-5: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 5: Network
layer".
[6] ETS 300 175-6: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 6: Identities and
addressing".
[7] ETS 300 175-7: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 7: Security
features".
[8] ETS 300 175-8: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 8: Speech coding
and transmission".
[9] ETS 300 175-9: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Common Interface Part 9: Public access
profile".
[10] Reserved.
[11] Reserved.
[12] I-ETS 300 176: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT) Approval test specification".

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ETS 300 175-9: October 1992
[13] Reserved for future ETS version of [12].
[14] CEPT Recommendation T/SGT SF2 (89) 6/0 : "Draft Recommendation T/SF
Services and Facilities of Digital European Cordless Telecommunications".
[15] ETR 043: "Radio Equipment and Systems (RES); Digital European Cordless
Telecommunications (DECT) Common interface Services and facilities
requirements specification".
[16] ETR 015: "Radio Equipment and Systems (RES); Digital European Cordless
Telecommunications Reference document".
[17] Draft ETSI Technical Report: "Digital European Cordless Telecommunications
System description document".
[18] ETR 042: "Radio Equipment and Systems (RES); Digital European Cordless
Telecommunications (DECT); A guide to the DECT features that influence the
traffic capacity and the maintenance of high radio link transmission quality,
including the results of simulations".
[19] Reserved for future DECT related document.
[20] CCITT Recommendation G.721 (1988): "32 kbit/s adaptive differential pulse
code modulation (ADPCM)".
3 Definitions and abbreviations
An overall list of definitions and abbreviations is included in ETS 300 175-1 [1].
For the purpose of this ETS, the following definitions apply:
Attach: the process whereby a portable part within the coverage area of a fixed part to which it has
access rights, notifies this fixed part that it is operative. The reverse process is detach, which reports the
portable part as inoperative.
NOTE: An operative portable part is assumed to be ready to receive calls.
Antenna diversity: implies that the RFP, for each bearer independently, can select between different
antenna properties such as gain, polarisation, coverage pattern and other features that may effect the
practical coverage. A typical example is space diversity, provided by two vertically polarized antennas
separated by 10 - 20 cm.
Authentication: the process whereby a DECT subscriber is positively verified to be a legitimate user of a
particular fixed part.
NOTE: Authentication is generally performed at call set-up, but may also be done at any other
time (e.g. during a call).
Bearer handover: the internal handover process provided by the Medium Access Control (MAC) layer,
whereby one MAC connection can modify its underlying bearers while maintaining the service provided to
the Data Link Control (DLC) layer.
NOTE: Bearer handover is slot based.
Bearer service: a type of telecommunication service that provides a defined capability for the
transmission of signals between user-network interfaces.
NOTE: The DECT user-network interface corresponds to the top of the DECT network layer
(layer 3).
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ETS 300 175-9: October 1992
Broadcast: a simplex point-to-multipoint mode of transmission.
NOTE: The transmitter may disregard the presence or absence of receivers.
C-Plane: the control plane of the DECT protocol stacks, which contains all of the internal DECT protocol
control, but may also include some external user information.
NOTE: The C-plane stack always contains protocol entities up to and including the network
layer.
Call: all of the network layer processes involved in one network layer peer-to-peer association.
NOTE: Call may sometimes be used to refer to processes of all layers, since lower layer
processes are implicitly required.
Cell: the domain served by a single antenna(e) system (including a leaky feeder) of one fixed part.
NOTE: A cell may include more than one source of radiated Radio Frequency (RF) energy (i.e.
more than one radio end point).
Cluster: a logical grouping of one or more cells between which bearer handover is possible. A cluster
control function controls one cluster.
NOTE: Internal handover to a cell which is not part of the same cluster can only be done by
connection handover.
Connection handover: the internal handover process provided by the DLC layer, whereby one set of
DLC entities (C-plane and U-plane) can reroute data from one MAC connection to a second new MAC
connection, while maintaining the service provided to the network layer.
NOTE: Connection handover is DLC frame based.
Connectionless mode (C/L): a transmission mode that transfers one packet (one self contained unit) of
data from one source point to one (or more) destination points in a single phase.
NOTE: Connectionless transmissions require the peer-to-peer associations to be prearranged,
and the transmission is unacknowledged at that layer.
Connection oriented mode (C/O): a transmission mode that transfers data from one source point to one
or more destination points using a protocol based on three phases: "Set-up", "Data transfer" and
"Release".
NOTE: Connection oriented mode requires no prearranged associations between peer entities
(unlike C/L mode).
Coverage area: the area over which reliable communication can be established and maintained.
DECT NetWork (DNW): a network that uses the DECT air interface to interconnect a local network to one
or more portable applications. The logical boundaries of the DECT network are defined to be at the top of
the DECT network layer.
NOTE: A DECT network is a logical grouping that contains one or more fixed radio
terminations plus their associated portable radio termination. The boundaries of the
DECT network are not physical boundaries.
DLC data link (DLC link): an association between two DLC layer entities. This can either be one
C-plane association or one U-plane association.
NOTE: This is not the same as a MAC connection.

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ETS 300 175-9: October 1992
DLC frame: the format used to structure all messages that are exchanged between DLC layer peer
entities.
NOTE: Different DLC frames are used in the C-plane and the U-plane, and there is more than
one format of DLC frame in each plane.
End System (ES): a logical grouping that contains application processes and supports telecommunication
services.
NOTE: From the OSI point of view, end systems are considered as sources and sinks of
information.
External handover: the process of switching a call in progress from one fixed radio termination to another
fixed radio termination.
Fixed Part (DECT Fixed Part) (FP): a physical grouping that contains all of the elements in the DECT
network between the local network and the DECT air interface.
NOTE: A DECT fixed part contains the logical elements of at least one fixed radio termination,
plus additional implementation specific elements.
Fixed radio Termination (FT): a logical group of functions that contains all of the DECT processes and
procedures on the fixed side of the DECT air interface.
NOTE: A fixed radio termination only includes elements that are defined in the ETS 300 175.
This includes radio transmission elements (layer 1) together with a selection of layer 2
and layer 3 elements.
Fragment: one of the service data units that is produced by the process of fragmentation.
NOTE: This is not the same as a segment.
Fragmentation: the process of dividing a protocol data unit into more than one service data unit for
delivery to a lower layer. The reverse process is recombination.
NOTE: This is not the same as segmentation.
Frame: see Time Division Multiple Access (TDMA) frame or DLC frame.
Global network (GNW): a telecommunication network capable of offering a long distance
telecommunication service.
NOTE: The term does not include legal or regulatory aspects, nor does it indicate if the
network is a public or a private network.
Handover: the process of switching a call in progress from one physical channel to another physical
channel. These processes can be internal (see internal handover) or external (see external handover).
NOTE: There are two physical forms of handover, intra-cell handover and inter-cell handover.
Intra-cell handover is always internal. Inter-cell handover can be internal or external.
Incoming call: a call received at a portable part.
Inter-cell handover: the switching of a call in progress from one cell to another cell.
Internal handover: handover processes that are completely internal to one fixed radio termination.
Internal handover reconnects the call at the lower layers, while maintaining the call at the network layer.
NOTE: The lower layer reconnection can either be at the DLC layer (see connection handover)
or at the MAC layer (see bearer handover).

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ETS 300 175-9: October 1992
Interoperability: the capability of fixed parts and portable parts, that enable a portable part to obtain
access to teleservices in more than one location area and/or from more than one operator (more than one
service provider).
Interoperator roaming: roaming between fixed part coverage areas of different operators (different
service providers).
Inter Working Unit (IWU): a unit that is used to interconnect subnetworks.
NOTE: The IWU will contain the interworking functions necessary to support the required
subnetwork interworking.
Intra-cell handover: the switching of a call in progress from one physical channel of one cell to another
physical channel of the same cell.
Intraoperator roaming: roaming between different fixed part coverage areas of the same operator (same
service provider).
Local NetWork (LNW): a telecommunication network capable of offering local telecommunication
services.
NOTE: The term does not include legal or regulatory aspects, nor does it indicate if the
network is a public network or a private network.
Location area: the domain in which a portable part may receive (and/or make) calls as a result of a single
location registration.
Location registration: the process whereby the position of a DECT portable termination is determined to
the level of one location area, and this position is updated in one or more databases.
NOTE: These databases are not included within the DECT fixed radio termination.
Logical channel: a generic term for any distinct data path. Logical channels can be considered to operate
between logical end points.
Lower Layer Management Entity (LLME): a management entity that spans a number of lower layers,
and is used to describe all control activities which do not follow the rules of layering.
NOTE: The DECT LLME spans the network layer, the DLC layer, the MAC layer and the
physical layer.
MAC bearer (bearer): MAC bearers are the service elements that are provided by each cell site function.
Each MAC bearer corresponds to a single service instance to the physical layer. See also simplex bearer,
duplex bearer and double simplex bearer.
MAC connection (connection): an association between one source MAC multi-bearer control entity and
one destination MAC multi-bearer control entity. This provides a set of related MAC services (a set of
logical channels), and it can involve one or more underlying MAC bearers.
Network (telecommunication network): all the means of providing telecommunication services between
a number of locations where the services are accessed via equipment attached to the network.
Operator (DECT operator): the individual or entity who, or which, is responsible for operation of one or
more DECT fixed parts.
NOTE: The term does not imply any legal or regulatory conditions, nor does it imply any
aspects of ownership.
Outgoing call: a call originating from a portable part.

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ETS 300 175-9: October 1992
Paging: the process of broadcasting a message from a DECT fixed part to one or more DECT portable
parts.
NOTE: Different types of paging message are possible. For example, the {LCE_REQUEST-
PAGE} message orders the recipient to respond with a call set-up attempt.
Paging area: the domain in which the portable part will be paged as a part of incoming call establishment.
NOTE: In general, the paging area will be equal to the TPUI domain, since the TPUI is used for
paging.
Portable HandSet (PHS): a single physical grouping that contains all of the portable elements that are
needed to provide a teleservice to the user.
NOTE: Portable handset is a subset of all possible portable parts. This subset includes all
physical groupings that combine one portable radio termination plus at l
...