ETSI EN 300 392-12-23 V1.2.1 (2012-04)

European Standard
Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 12: Supplementary services stage 3;
Sub-part 23: Call Completion on No Reply (CCNR)

2 ETSI EN 300 392-12-23 V1.2.1 (2012-04)

Reference
REN/TETRA-03218
Keywords
CCNR, radio, stage 3, supplementary service,
TETRA, V+D, voice
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ETSI
3 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
Contents
Intellectual Property Rights . 6
Foreword . 6
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
3.2 Symbols . 11
3.3 Abbreviations . 11
4 SS-CCNR Service Description . 12
4.1 General . 12
4.2 SS-CCNR services offered over the TNSS-SAP . 12
4.2.1 CALL-INFORMATION-RELEASE indication . 12
4.2.2 CALL-INFORMATION-RETENTION indication . 12
4.2.3 CANCEL request . 12
4.2.4 CANCEL confirmation . 13
4.2.5 CANCELLED indication . 13
4.2.6 FAILED indication . 13
4.2.7 LIST-CCNR request . 13
4.2.8 LIST-CCNR confirmation . 13
4.2.9 RECALL request . 13
4.2.10 RECALL-ACCEPTED request . 13
4.2.11 REQUEST request . 13
4.2.12 REQUEST confirmation . 13
4.2.13 USER-B-FREE indication . 13
4.3 Parameter description . 13
5 Signaling protocol for the support of SS-CCNR . 13
5.1 SS-CCNR Operational requirements . 13
5.1.1 Requirements on the served user MS/LS . 13
5.1.2 Requirements on the Originating SwMI . 14
5.1.3 Requirements on the Terminating SwMI . 14
5.1.4 Requirements on a Participating SwMI . 14
5.2 SS-CCNR Coding Requirements . 14
5.2.1 SS-CCNR PDUs . 14
5.2.1.1 CALL-INFORMATION-RELEASE PDU . 14
5.2.1.2 CALL-INFORMATION-RETENTION PDU . 14
5.2.1.3 CANCEL PDU . 14
5.2.1.4 CANCEL ACK PDU . 14
5.2.1.5 CANCELLATION PDU . 14
5.2.1.6 CANCELLED PDU . 14
5.2.1.7 CCNRI PDU . 14
5.2.1.8 FAILED PDU . 14
5.2.1.9 FREE NOTIFICATION PDU . 15
5.2.1.10 LIST PDU . 15
5.2.1.11 LIST ACK PDU . 15
5.2.1.12 MONITOR PDU . 15
5.2.1.13 MONITOR ACK PDU . 15
5.2.1.14 RECALL PDU . 15
5.2.1.15 Void. 15
5.2.1.16 RECALL-ACCEPTED PDU . 15
5.2.1.17 REQUEST PDU . 16
5.2.1.18 REQUEST ACK PDU . 16
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4 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
5.2.1.19 RESUME-COMPLETION PDU . 16
5.2.1.20 SUSPEND-COMPLETION PDU . 16
5.2.1.21 USER-B-FREE PDU . 16
5.2.2 TETRA PDU information element coding . 17
5.2.2.1 Accept/Reject . 17
5.2.2.2 Basic Service Information . 17
5.2.2.3 Call Priority . 17
5.2.2.4 Called party extension . 17
5.2.2.5 Called party SSI . 17
5.2.2.6 Called party type identifier . 17
5.2.2.7 Calling party extension . 17
5.2.2.8 Calling party SSI . 17
5.2.2.9 Calling party type identifier . 17
5.2.2.10 Cancellation Cause . 17
5.2.2.11 Cancellation Result . 17
5.2.2.12 CCNR-PDU type . 18
5.2.2.13 CCNRI . 18
5.2.2.14 Failure Cause. 18
5.2.2.15 Length of CCNR List . 19
5.2.2.16 Number of CCNR requests . 19
5.2.2.17 Reject Cause . 19
5.2.2.18 List Request. 19
5.2.2.19 Request Maintained . 19
5.2.2.20 Retain Capability . 19
5.2.2.21 SS-Type . 19
5.2.2.22 TETRA Call Identifier . 19
5.2.3 Additional coding requirements over the ISI . 19
5.3 SS-CCNR State Definitions . 19
5.3.1 States at User A MS/LS . 19
5.3.1.1 CCNR-Idle . 19
5.3.1.2 CCNR-Requested . 19
5.3.1.3 CCNR-Active . 20
5.3.1.4 CCNR-Recall . 20
5.3.1.5 CCNR-Call . 20
5.3.1.6 CCNR-List-Requested . 20
5.3.1.7 CCNR-Cancel . 20
5.3.1.8 CCNR-Retention-Idle . 20
5.3.2 States at the Originating SwMI . 20
5.3.2.1 CCNR-Idle . 20
5.3.2.2 CCNR-InvokeD-User-A . 20
5.3.2.3 CCNR-Path-Setup . 20
5.3.2.4 CCNR-Wait-ACK . 20
5.3.2.5 CCNR-Wait-User-A-Answer-N . 20
5.3.2.6 CCNR-Wait-User-A-Answer-R . 20
5.3.2.7 CCNR-Wait-User-A-Free . 20
5.3.3 States at the Terminating SwMI . 21
5.3.3.1 CCNR-Idle . 21
5.3.3.2 CCNR-Await-Call-Completion . 21
5.3.3.3 CCNR-InvokeD-User-B . 21
5.3.3.4 CCNR-Path-Complete. 21
5.3.3.5 CCNR-SuspendeD-User-B . 21
5.3.3.6 CCNR-Wait-User-B-Alert . 21
5.3.4 States at User B . 21
5.4 SS-CCNR Signaling Procedures . 21
5.4.1 Major Options . 21
5.4.2 Actions at the served user MS/LS . 21
5.4.2.1 Normal procedures . 21
5.4.3 Actions at the Originating SwMI . 21
5.4.3.1 Normal Procedures . 21
5.4.3.1.1 Invocation . 21
5.4.3.1.2 Operation . 23
5.4.3.1.3 User initiated cancellation procedure . 25
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5 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
5.4.3.1.4 List CCNR request . 25
5.4.3.2 Exceptional Procedures . 25
5.4.3.2.1 Invocation . 25
5.4.3.2.2 User initiated cancellation procedure . 26
5.4.3.2.3 List CCNR requests . 27
5.4.3.2.4 Operation . 27
5.4.4 Actions at the Terminating SwMI . 28
5.4.4.1 Normal Procedures . 28
5.4.4.1.1 Determination that CCNR is available . 28
5.4.4.1.2 Acceptance of a CCNR Request . 29
5.4.4.1.3 Queue B processing . 29
5.4.4.1.4 Determination of user B free after a period of activity . 29
5.4.4.1.5 CCNR Call Set-Up . 30
5.4.4.1.6 CCNR Call without Path Reservation . 30
5.4.4.2 Exceptional Procedures . 30
5.4.4.2.1 CCNR Invocation . 30
5.4.4.2.2 Acceptance of a CCNR Request . 30
5.4.4.2.3 Queue B processing . 31
5.4.4.2.4 Determination of user B free after a period of activity . 31
5.4.4.2.5 CCNR Call set-up . 31
5.4.5 Actions at the Participating SwMI . 31
5.5 Inter-working . 31
5.5.1 Incoming Gateway SwMI . 31
5.5.2 Outgoing Gateway SwMI . 32
5.6 Protocol Interaction between SS-CCNR and Other Supplementary Services and ANFs . 33
5.6.1 Call Completion on No Reply (CCNR) . 33
5.6.2 Call Completion to Busy Subscriber (CCBS) . 33
5.6.3 Call Forwarding Busy (CFB) . 33
5.6.4 Call Forwarding No Reply (CFNR) . 34
5.6.5 Call Forwarding Unconditional (CFU) . 34
5.6.6 Barring of Outgoing Call (BOC) . 35
5.6.7 List Search Call (SS-LSC) . 35
5.6.8 Call Authorized by Dispatcher (SS-CAD) . 35
5.6.9 Area Selection (SS-AS) . 35
5.6.10 Priority Call (SS-PC) . 35
5.6.11 Interactions with ISI Mobility Management (ANF-ISIMM) . 35
5.7 Parameter values (timers) . 35
Annex A (informative): Bibliography . 36
Annex B (informative): Change requests . 37
History . 38

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6 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (EN) has been produced by ETSI Technical Committee Terrestrial Trunked Radio (TETRA).
The present document is part 12, sub-part 23 of a multi-part deliverable covering Voice plus Data (V+D), as identified
below:
EN 300 392-1: "General network design";
EN 300 392-2: "Air Interface (AI)";
EN 300 392-3: "Interworking at the Inter-System Interface (ISI)";
ETS 300 392-4: "Gateways basic operation";
EN 300 392-5: "Peripheral Equipment Interface (PEI)";
EN 300 392-7: "Security";
EN 300 392-9: "General requirements for supplementary services";
EN 300 392-10: "Supplementary services stage 1";
EN 300 392-11: "Supplementary services stage 2";
EN 300 392-12: "Supplementary services stage 3";
EN 300 392-12-1: "Call Identification (CI)";
ETS 300 392-12-2: "Call Report (CR)";
EN 300 392-12-3: "Talking Party Identification (TPI)";
EN 300 392-12-4: "Call Forwarding (CF)";
ETS 300 392-12-5: "List Search Call (LSC)";
EN 300 392-12-6: "Call Authorized by Dispatcher (CAD)";
ETS 300 392-12-7: "Short Number Addressing (SNA)";
EN 300 392-12-8: "Area Selection (AS)";
ETS 300 392-12-9: "Access Priority (AP)";
EN 300 392-12-10: "Priority Call (PC)";
ETS 300 392-12-11: "Call Waiting (CW)";
EN 300 392-12-12: "Call Hold (HOLD)";
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7 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
EN 300 392-12-13: "Call Completion to Busy Subscriber (CCBS)";
EN 300 392-12-14: "Late Entry (LE)";
EN 300 392-12-16: "Pre-emptive Priority Call (PPC)";
EN 300 392-12-17: "Include Call (IC)";
EN 300 392-12-18: "Barring of Outgoing Calls (BOC)";
EN 300 392-12-19: "Barring of Incoming Calls (BIC)";
EN 300 392-12-20: "Discreet Listening (DL)";
EN 300 392-12-21: "Ambience Listening (AL)";
EN 300 392-12-22: "Dynamic Group Number Assignment (DGNA)";
EN 300 392-12-23: "Call Completion on No Reply (CCNR)";
ETS 300 392-12-24: "Call Retention (CRT)";
ETS 300 392-13: "SDL model of the Air Interface (AI)";
ETS 300 392-14: "Protocol Implementation Conformance Statement (PICS) proforma specification";
TS 100 392-15: "TETRA frequency bands, duplex spacings and channel numbering";
TS 100 392-16: "Network Performance Metrics";
TR 100 392-17: "TETRA V+D and DMO specifications";
TS 100 392-18: "Air interface optimized applications".
NOTE: Part 3, sub-parts 6 and 7 (Speech format implementation), part 4, sub-part 3 (Data networks gateway),
part 10, sub-part 15 (Transfer of control), part 13 (SDL) and part 14 (PICS) of this multi-part deliverable
are in status "historical" and are not maintained.

National transposition dates
Date of adoption of this EN: 21 March 2012
Date of latest announcement of this EN (doa): 30 June 2012
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 December 2012
Date of withdrawal of any conflicting National Standard (dow): 31 December 2012

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8 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
1 Scope
The present document specifies the stage 3 description of the Supplementary Service CCNR Call Completion on No
Reply for the Terrestrial Trunked Radio (TETRA).
Call Completion on No Reply allows a calling user A, encountering a destination user B which does not answer the call,
to have the call completed when user B becomes non busy after a period of activity, without having to make a new call
attempt.
Man-Machine Interface and charging principles are outside the scope of the present document.
The supplementary service stage 3 description is preceded by the stage 1 and the stage 2 description of the service,
according to the method described in ITU-T Recommendation I.130 [i.1]. The stage 1 description specifies the service
from the user's point of view. The stage 2 description identifies the functional capabilities of each SS and the
information flows needed to support the supplementary service as specified in its stage 1 description. The present
stage 3 description specifies the protocols at the air interface and at the various Inter-System Interfaces (ISI) to support
each Supplementary Service.
NOTE: According to ITU-T Recommendation I.130 [i.1], the stage 3 description of any telecommunication
service addresses the network implementation aspects. Consequently it comprises two steps: the
specifications of all protocols at the various reference points involved in any of the service procedures
(notably the service operation) are the first step of the stage 3 description, and the specifications of the
functions of the corresponding network entities are its second step. The latter have not been provided
since they can be derived from the specification of the functional entity actions in the stage 2 description.
The present document is applicable to Voice plus Data individual call; the present document is neither applicable to
Packet Mode of Operation nor to DMO; more specifically the present document is applicable to the following entities:
• the MS of either the calling user or the connected user during an individual call;
• the originating Switching and Management Infrastructure (SwMI) in an individual call;
• the terminating SwMI in an individual call;
• the inter-working SwMI for an individual call.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 300 392-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air
Interface (AI)".
[2] ETSI EN 300 392-3-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 2: Additional Network Feature
Individual Call (ANF-ISIIC)".
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9 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
[3] ETSI EN 300 392-9: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 9: General requirements for supplementary services".
[4] ETSI ETS 300 392-10-23: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 10: Supplementary services stage 1; Sub-part 23: Call Completion on No Reply".
[5] ETSI EN 300 392-12-13: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 12: Supplementary services stage 3; Sub-Part 13: Call Completion to Busy Subscriber
(CCBS)".
[6] ETSI ETS 300 392-11-13: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 11: Supplementary services stage 2; Sub-part 13: Call Completion to Busy Subscriber
(CCBS)".
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ITU-T Recommendation I.130 (1988): "Method for the characterization of telecommunication
services supported by an ISDN and network capabilities of an ISDN (Blue Book)".
[i.2] ITU-T Recommendation I.221 (1993): "Common specific characteristics of services".
[i.3] ITU-T Recommendation Z.100: "Specification and description language (SDL)".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
activity: activity condition applies, if at least one CCNR request is in queue B and user B either:
• initiates an outgoing call with a D-SETUP message; or
• answers an incoming call with a U-CONNECT message; or
• clears an established call; or
• clears an outgoing call.
additional network feature: capability, over and above that of a basic service, provided by a SwMI, but not directly to
a user
bearer service: type of telecommunication service that provides the capability for the transmission of signals between
user-network interfaces
busy: property of a user for whom either a "network determined user busy" or "user determined user busy" condition
exists
NOTE: See clause 3.1 of ITU-T Recommendation I.221 [i.2].
call, basic call: instance of the use of a basic service
call completion: successful presentation of a previously unsuccessful Call to a destination user (user B) which occurs
when the call has entered an alerting phase or has been answered
call information retention: procedure at originating SwMI to store the call information of a specific call so that it can
be used for that call
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10 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
CCNR busy: any one of the following conditions cause CCNR busy condition:
• maximum number of calls reached at user A; or
• no resource available at user A; or
• CCNR or CCBS recall pending on user A.
CCNR call: call which is established under the control of the CCNR supplementary service
CCNR recall: procedure where user A is requested to complete the communication when user B ceases to be busy after
having initiated an activity
CCNR retention: system attempt to establish CCNR call fails because:
• user B does not answer the CCNR call; or
• user B is busy;
NOTE: At CCNR retention the original CCNR request retains its position in the queue B, and monitoring user B
continues.
compatible MS: MS presenting the same basic TETRA class of service as the TETRA class of service requested by the
calling user MS
NOTE: By analogy to ISDN "compatible terminal".
free: property of a user who can accept any attempt by the SwMI to present a call to that user (i.e. allow the call to
reach the alerting or answered state)
network determined user busy: network declines to allocate an additional call for the user
NOTE: If all of the appropriate user-network interface information channels are busy (channels busy) and either
the network does not support the offering of additional calls beyond the number of appropriate channels,
or the maximum number of such additional calls has been reached, the network will clear the call and
indicate network determined user busy (ITU-T Recommendation I.221 [i.2], clause 3.1.4).
path reservation: reservation of resources prior to SS-CCNR Recall in order that a connection path through the SwMI
is available when user A accepts the SS-CCNR Recall
NOTE 1: Path Reservation would not guarantee that user B will be free when user A accepts the SS-CCNR Recall.
NOTE 2: Path reservation is not the preferred solution in the TETRA environment.
recall timer: this timer specifies the length of time the network waits for a response from user A to a CCNR Recall
retention timer: this timer specifies the period of time the network retains the originating call information after a valid
call attempt is released
SS-CCNR recall: indication informing user A that user B is no longer busy (in the case of SS-CCNR) or Acceptance of
this indication by user A will cause the call to be completed by the SwMI
SS-CCNR service duration timer: this timer specifies the length of time that the service is active within the network
supplementary service: supplementary service modifies or supplements a bearer service or a tele-service
NOTE: A supplementary service cannot be offered to a customer as a stand alone service. It should be offered in
combination with a bearer service or a tele-service.
Switching And Management Infrastructure (SwMI): all of the TETRA equipment for a Voice plus Data (V+D)
network except for subscriber terminals
NOTE: The SwMI enables subscriber terminals to communicate with each other via the SwMI.
tele-service: type of telecommunications service that provides the complete capability, including terminal equipment
functions, for communication between users according to agreed protocols
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11 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
user A: specific user that originated the call and requested the supplementary service
user B: user that was initially addressed in the original call set up
3.2 Symbols
For the purposes of the present document, there are no additional symbols besides the symbols defined and used in
ITU-T Recommendation Z.100 [i.3].
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACK ACKnowlegdement
ANF Additional Network Feature
CC Call Control (functional entity)
CC Call Completion
CPTI Called Party Type Identifier
CR Cancellation Reason
DMO Direct Mode Operation
ISDN Integrated Services Digital Network
ISI Inter System Interface
ITSI Individual TETRA Subscriber Identity
LS Line Station
MS Mobile Station
PDU Protocol Data Unit
PISN Private Integrated Services Network
SDL Specification and Description Language
SS Supplementary Service
NOTE 1: The abbreviation SS is only used when referring to a specific supplementary service.
SSI Short Subscriber Identity
SwMI Switching and Management Infrastructure
TE Terminal Equipment
TETRA Terrestrial Trunked Radio
V+D Voice Plus Data
Supplementary service abbreviations
For the purposes of the present document, the following abbreviations also apply:
SS-AL Ambience Listening
SS-AP Access Priority
SS-AS Area Selection
SS-BIC Barring of Incoming Calls
SS-BOC Barring of Outgoing Calls
SS-CAD Call Authorized by Dispatcher
SS-CCBS Call Completion on Busy Subscriber
SS-CCNR Call Completion on No Reply
SS-CF Call Forwarding
SS-CFB Call Forwarding on Busy
SS-CFNR Call Forwarding on No Reply (generic for both CFNRy and CFNRc)
SS-CFNRc Call Forwarding on Mobile Subscriber Not Reachable
SS-CFNRy Call Forwarding on No Reply
SS-CFU Call Forwarding Unconditional
SS-CI Call Identification
SS-CLIP Calling Line Identification Presentation
SS-CLIR Calling Line Identification Restriction
SS-COLP COnnected Line identification Presentation
SS-COLR COnnected Line identification Restriction
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12 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
SS-CR Call Report
SS-CRT Call Retention
SS-CW Call Waiting
SS-DGNA Dynamic Group Number Assignment
SS-DL Discreet Listening
SS-HOLD call HOLD
SS-IC Include Call
SS-LE Late Entry
SS-LSC List Search Call
SS-PC Priority Call
SS-PPC Pre-emptive Priority Call
SS-SNA Short Number Addressing
SS-TPI Talking Party Identification
NOTE 2: Supplementary service abbreviations are also used without "SS-" preamble e.g. "SS-AL" and "AL" are
used as appropriate.
NOTE 3: The supplementary services list contains also abbreviations that are not used in the present document.
4 SS-CCNR Service Description
4.1 General
Completion of Calls on No Reply (SS-CCNR) is a supplementary service which allows a calling User A, when the
called User B does not answer the call, to request that the SwMI monitors User B and indicates to User A when User B
becomes not busy after a subsequent period of activity at User B's TE. On response by User A to that indication the
SwMI will attempt to complete the call to User B. User A can request SS-CCNR when the call is in the alerting phase
and after call clearing during the alerting phase before the retention timer expires.
The procedures for the SS-CCNR are similar to the procedures specified for the SS-CCBS (EN 300 392-12-13 [5]).
Therefore, where possible, the same terms used for CCBS are re-used in the present document and references to the
clauses of EN 300 392-12-13 [5] are made.
NOTE: Which activities at User B's TE would result in a 'B not busy' indication to User A is outside the scope of
the present document.
These supplementary services are applicable to all TETRA Voice + Data basic individual circuit services defined in
EN 300 392-2 [1].
4.2 SS-CCNR services offered over the TNSS-SAP
Same text as clause 4.2 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.1 CALL-INFORMATION-RELEASE indication
Same text as clauseclause 4.2.1 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.2 CALL-INFORMATION-RETENTION indication
Same text as clause 4.2.2 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.3 CANCEL request
Same text as clause 4.2.3 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
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13 ETSI EN 300 392-12-23 V1.2.1 (2012-04)
4.2.4 CANCEL confirmation
Same text as clause 4.2.4 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.5 CANCELLED indication
Same text as clause 4.2.5 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.6 FAILED indication
Same text as clause 4.2.6 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.7 LIST-CCNR request
Same text as clause 4.2.7 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.8 LIST-CCNR confirmation
Same text as clause 4.2.8 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.9 RECALL request
Same text as clause 4.2.9 of EN 300 392-12-13 [5] replacing CCBS by CCNR.
4.2.10 RECALL-ACCEPTED request
Same text as clause 4.2.10 of EN 300 392-12-13 [5] replacing
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3 - Sub-part 23: Call Completion on No Reply (CCNR)33.070.10Prizemni snopovni radio (TETRA)Terrestrial Trunked Radio (TETRA)ICS:Ta slovenski standard je istoveten z:EN300 392-12-23 Version1.2.1SIST EN 300 392-12-23 V1.2.1:2012en01-junij-2012SIST EN 300 392-12-23 V1.2.1:2012SLOVENSKI
STANDARD
European Standard SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)2
Reference REN/TETRA-03218 Keywords CCNR, radio, stage 3, supplementary service, TETRA, V+D, voice ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)3 Contents Intellectual Property Rights . 6 Foreword . 6 1 Scope . 8 2 References . 8 2.1 Normative references . 8 2.2 Informative references . 9 3 Definitions, symbols and abbreviations . 9 3.1 Definitions . 9 3.2 Symbols . 11 3.3 Abbreviations . 11 4 SS-CCNR Service Description . 12 4.1 General . 12 4.2 SS-CCNR services offered over the TNSS-SAP . 12 4.2.1 CALL-INFORMATION-RELEASE indication . 12 4.2.2 CALL-INFORMATION-RETENTION indication . 12 4.2.3 CANCEL request . 12 4.2.4 CANCEL confirmation . 13 4.2.5 CANCELLED indication . 13 4.2.6 FAILED indication . 13 4.2.7 LIST-CCNR request . 13 4.2.8 LIST-CCNR confirmation . 13 4.2.9 RECALL request . 13 4.2.10 RECALL-ACCEPTED request . 13 4.2.11 REQUEST request . 13 4.2.12 REQUEST confirmation . 13 4.2.13 USER-B-FREE indication . 13 4.3 Parameter description . 13 5 Signaling protocol for the support of SS-CCNR . 13 5.1 SS-CCNR Operational requirements . 13 5.1.1 Requirements on the served user MS/LS . 13 5.1.2 Requirements on the Originating SwMI . 14 5.1.3 Requirements on the Terminating SwMI . 14 5.1.4 Requirements on a Participating SwMI . 14 5.2 SS-CCNR Coding Requirements . 14 5.2.1 SS-CCNR PDUs . 14 5.2.1.1 CALL-INFORMATION-RELEASE PDU . 14 5.2.1.2 CALL-INFORMATION-RETENTION PDU . 14 5.2.1.3 CANCEL PDU . 14 5.2.1.4 CANCEL ACK PDU . 14 5.2.1.5 CANCELLATION PDU . 14 5.2.1.6 CANCELLED PDU . 14 5.2.1.7 CCNRI PDU . 14 5.2.1.8 FAILED PDU . 14 5.2.1.9 FREE NOTIFICATION PDU . 15 5.2.1.10 LIST PDU . 15 5.2.1.11 LIST ACK PDU . 15 5.2.1.12 MONITOR PDU . 15 5.2.1.13 MONITOR ACK PDU . 15 5.2.1.14 RECALL PDU . 15 5.2.1.15 Void. 15 5.2.1.16 RECALL-ACCEPTED PDU . 15 5.2.1.17 REQUEST PDU . 16 5.2.1.18 REQUEST ACK PDU . 16 SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)4 5.2.1.19 RESUME-COMPLETION PDU . 16 5.2.1.20 SUSPEND-COMPLETION PDU . 16 5.2.1.21 USER-B-FREE PDU . 16 5.2.2 TETRA PDU information element coding . 17 5.2.2.1 Accept/Reject . 17 5.2.2.2 Basic Service Information . 17 5.2.2.3 Call Priority . 17 5.2.2.4 Called party extension . 17 5.2.2.5 Called party SSI . 17 5.2.2.6 Called party type identifier . 17 5.2.2.7 Calling party extension . 17 5.2.2.8 Calling party SSI . 17 5.2.2.9 Calling party type identifier . 17 5.2.2.10 Cancellation Cause . 17 5.2.2.11 Cancellation Result . 17 5.2.2.12 CCNR-PDU type . 18 5.2.2.13 CCNRI . 18 5.2.2.14 Failure Cause. 18 5.2.2.15 Length of CCNR List . 19 5.2.2.16 Number of CCNR requests . 19 5.2.2.17 Reject Cause . 19 5.2.2.18 List Request. 19 5.2.2.19 Request Maintained . 19 5.2.2.20 Retain Capability . 19 5.2.2.21 SS-Type . 19 5.2.2.22 TETRA Call Identifier . 19 5.2.3 Additional coding requirements over the ISI . 19 5.3 SS-CCNR State Definitions . 19 5.3.1 States at User A MS/LS . 19 5.3.1.1 CCNR-Idle . 19 5.3.1.2 CCNR-Requested . 19 5.3.1.3 CCNR-Active . 20 5.3.1.4 CCNR-Recall . 20 5.3.1.5 CCNR-Call . 20 5.3.1.6 CCNR-List-Requested . 20 5.3.1.7 CCNR-Cancel . 20 5.3.1.8 CCNR-Retention-Idle . 20 5.3.2 States at the Originating SwMI . 20 5.3.2.1 CCNR-Idle . 20 5.3.2.2 CCNR-InvokeD-User-A . 20 5.3.2.3 CCNR-Path-Setup . 20 5.3.2.4 CCNR-Wait-ACK . 20 5.3.2.5 CCNR-Wait-User-A-Answer-N . 20 5.3.2.6 CCNR-Wait-User-A-Answer-R . 20 5.3.2.7 CCNR-Wait-User-A-Free . 20 5.3.3 States at the Terminating SwMI . 21 5.3.3.1 CCNR-Idle . 21 5.3.3.2 CCNR-Await-Call-Completion . 21 5.3.3.3 CCNR-InvokeD-User-B . 21 5.3.3.4 CCNR-Path-Complete. 21 5.3.3.5 CCNR-SuspendeD-User-B . 21 5.3.3.6 CCNR-Wait-User-B-Alert . 21 5.3.4 States at User B . 21 5.4 SS-CCNR Signaling Procedures . 21 5.4.1 Major Options . 21 5.4.2 Actions at the served user MS/LS . 21 5.4.2.1 Normal procedures . 21 5.4.3 Actions at the Originating SwMI . 21 5.4.3.1 Normal Procedures . 21 5.4.3.1.1 Invocation . 21 5.4.3.1.2 Operation . 23 5.4.3.1.3 User initiated cancellation procedure . 25 SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)5 5.4.3.1.4 List CCNR request . 25 5.4.3.2 Exceptional Procedures . 25 5.4.3.2.1 Invocation . 25 5.4.3.2.2 User initiated cancellation procedure . 26 5.4.3.2.3 List CCNR requests . 27 5.4.3.2.4 Operation . 27 5.4.4 Actions at the Terminating SwMI . 28 5.4.4.1 Normal Procedures . 28 5.4.4.1.1 Determination that CCNR is available . 28 5.4.4.1.2 Acceptance of a CCNR Request . 29 5.4.4.1.3 Queue B processing . 29 5.4.4.1.4 Determination of user B free after a period of activity . 29 5.4.4.1.5 CCNR Call Set-Up . 30 5.4.4.1.6 CCNR Call without Path Reservation . 30 5.4.4.2 Exceptional Procedures . 30 5.4.4.2.1 CCNR Invocation . 30 5.4.4.2.2 Acceptance of a CCNR Request . 30 5.4.4.2.3 Queue B processing . 31 5.4.4.2.4 Determination of user B free after a period of activity . 31 5.4.4.2.5 CCNR Call set-up . 31 5.4.5 Actions at the Participating SwMI . 31 5.5 Inter-working . 31 5.5.1 Incoming Gateway SwMI . 31 5.5.2 Outgoing Gateway SwMI . 32 5.6 Protocol Interaction between SS-CCNR and Other Supplementary Services and ANFs . 33 5.6.1 Call Completion on No Reply (CCNR) . 33 5.6.2 Call Completion to Busy Subscriber (CCBS) . 33 5.6.3 Call Forwarding Busy (CFB) . 33 5.6.4 Call Forwarding No Reply (CFNR) . 34 5.6.5 Call Forwarding Unconditional (CFU) . 34 5.6.6 Barring of Outgoing Call (BOC) . 35 5.6.7 List Search Call (SS-LSC) . 35 5.6.8 Call Authorized by Dispatcher (SS-CAD) . 35 5.6.9 Area Selection (SS-AS) . 35 5.6.10 Priority Call (SS-PC) . 35 5.6.11 Interactions with ISI Mobility Management (ANF-ISIMM) . 35 5.7 Parameter values (timers) . 35 Annex A (informative): Bibliography . 36 Annex B (informative): Change requests . 37 History . 38
ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)6 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (EN) has been produced by ETSI Technical Committee Terrestrial Trunked Radio (TETRA). The present document is part 12, sub-part 23 of a multi-part deliverable covering Voice plus Data (V+D), as identified below: EN 300 392-1: "General network design"; EN 300 392-2: "Air Interface (AI)"; EN 300 392-3: "Interworking at the Inter-System Interface (ISI)"; ETS 300 392-4: "Gateways basic operation"; EN 300 392-5: "Peripheral Equipment Interface (PEI)"; EN 300 392-7: "Security"; EN 300 392-9: "General requirements for supplementary services"; EN 300 392-10: "Supplementary services stage 1"; EN 300 392-11: "Supplementary services stage 2"; EN 300 392-12: "Supplementary services stage 3"; EN 300 392-12-1: "Call Identification (CI)"; ETS 300 392-12-2: "Call Report (CR)"; EN 300 392-12-3: "Talking Party Identification (TPI)"; EN 300 392-12-4: "Call Forwarding (CF)"; ETS 300 392-12-5: "List Search Call (LSC)"; EN 300 392-12-6: "Call Authorized by Dispatcher (CAD)"; ETS 300 392-12-7: "Short Number Addressing (SNA)"; EN 300 392-12-8: "Area Selection (AS)"; ETS 300 392-12-9: "Access Priority (AP)"; EN 300 392-12-10: "Priority Call (PC)"; ETS 300 392-12-11: "Call Waiting (CW)"; EN 300 392-12-12: "Call Hold (HOLD)"; SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)7 EN 300 392-12-13: "Call Completion to Busy Subscriber (CCBS)"; EN 300 392-12-14: "Late Entry (LE)"; EN 300 392-12-16: "Pre-emptive Priority Call (PPC)"; EN 300 392-12-17: "Include Call (IC)"; EN 300 392-12-18: "Barring of Outgoing Calls (BOC)"; EN 300 392-12-19: "Barring of Incoming Calls (BIC)"; EN 300 392-12-20: "Discreet Listening (DL)"; EN 300 392-12-21: "Ambience Listening (AL)"; EN 300 392-12-22: "Dynamic Group Number Assignment (DGNA)"; EN 300 392-12-23: "Call Completion on No Reply (CCNR)"; ETS 300 392-12-24: "Call Retention (CRT)"; ETS 300 392-13: "SDL model of the Air Interface (AI)"; ETS 300 392-14: "Protocol Implementation Conformance Statement (PICS) proforma specification"; TS 100 392-15: "TETRA frequency bands, duplex spacings and channel numbering"; TS 100 392-16: "Network Performance Metrics"; TR 100 392-17: "TETRA V+D and DMO specifications"; TS 100 392-18: "Air interface optimized applications". NOTE: Part 3, sub-parts 6 and 7 (Speech format implementation), part 4, sub-part 3 (Data networks gateway), part 10, sub-part 15 (Transfer of control), part 13 (SDL) and part 14 (PICS) of this multi-part deliverable are in status "historical" and are not maintained.
National transposition dates Date of adoption of this EN: 21 March 2012 Date of latest announcement of this EN (doa): 30 June 2012 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 December 2012 Date of withdrawal of any conflicting National Standard (dow): 31 December 2012
ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)8 1 Scope The present document specifies the stage 3 description of the Supplementary Service CCNR Call Completion on No Reply for the Terrestrial Trunked Radio (TETRA). Call Completion on No Reply allows a calling user A, encountering a destination user B which does not answer the call, to have the call completed when user B becomes non busy after a period of activity, without having to make a new call attempt. Man-Machine Interface and charging principles are outside the scope of the present document. The supplementary service stage 3 description is preceded by the stage 1 and the stage 2 description of the service, according to the method described in ITU-T Recommendation I.130 [i.1]. The stage 1 description specifies the service from the user's point of view. The stage 2 description identifies the functional capabilities of each SS and the information flows needed to support the supplementary service as specified in its stage 1 description. The present stage 3 description specifies the protocols at the air interface and at the various Inter-System Interfaces (ISI) to support each Supplementary Service. NOTE: According to ITU-T Recommendation I.130 [i.1], the stage 3 description of any telecommunication service addresses the network implementation aspects. Consequently it comprises two steps: the specifications of all protocols at the various reference points involved in any of the service procedures (notably the service operation) are the first step of the stage 3 description, and the specifications of the functions of the corresponding network entities are its second step. The latter have not been provided since they can be derived from the specification of the functional entity actions in the stage 2 description. The present document is applicable to Voice plus Data individual call; the present document is neither applicable to Packet Mode of Operation nor to DMO; more specifically the present document is applicable to the following entities: • the MS of either the calling user or the connected user during an individual call; • the originating Switching and Management Infrastructure (SwMI) in an individual call; • the terminating SwMI in an individual call; • the inter-working SwMI for an individual call. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. [1] ETSI EN 300 392-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air Interface (AI)". [2] ETSI EN 300 392-3-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 2: Additional Network Feature Individual Call (ANF-ISIIC)". SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)9 [3] ETSI EN 300 392-9: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 9: General requirements for supplementary services". [4] ETSI ETS 300 392-10-23: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 10: Supplementary services stage 1; Sub-part 23: Call Completion on No Reply". [5] ETSI EN 300 392-12-13: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 12: Supplementary services stage 3; Sub-Part 13: Call Completion to Busy Subscriber (CCBS)". [6] ETSI ETS 300 392-11-13: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 11: Supplementary services stage 2; Sub-part 13: Call Completion to Busy Subscriber (CCBS)". 2.2 Informative references The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. [i.1] ITU-T Recommendation I.130 (1988): "Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN (Blue Book)". [i.2] ITU-T Recommendation I.221 (1993): "Common specific characteristics of services". [i.3] ITU-T Recommendation Z.100: "Specification and description language (SDL)". 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: activity: activity condition applies, if at least one CCNR request is in queue B and user B either: • initiates an outgoing call with a D-SETUP message; or • answers an incoming call with a U-CONNECT message; or • clears an established call; or • clears an outgoing call. additional network feature: capability, over and above that of a basic service, provided by a SwMI, but not directly to a user bearer service: type of telecommunication service that provides the capability for the transmission of signals between user-network interfaces busy: property of a user for whom either a "network determined user busy" or "user determined user busy" condition exists NOTE: See clause 3.1 of ITU-T Recommendation I.221 [i.2]. call, basic call: instance of the use of a basic service call completion: successful presentation of a previously unsuccessful Call to a destination user (user B) which occurs when the call has entered an alerting phase or has been answered call information retention: procedure at originating SwMI to store the call information of a specific call so that it can be used for that call SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)10 CCNR busy: any one of the following conditions cause CCNR busy condition: • maximum number of calls reached at user A; or • no resource available at user A; or • CCNR or CCBS recall pending on user A. CCNR call: call which is established under the control of the CCNR supplementary service CCNR recall: procedure where user A is requested to complete the communication when user B ceases to be busy after having initiated an activity CCNR retention: system attempt to establish CCNR call fails because: • user B does not answer the CCNR call; or • user B is busy; NOTE: At CCNR retention the original CCNR request retains its position in the queue B, and monitoring user B continues. compatible MS: MS presenting the same basic TETRA class of service as the TETRA class of service requested by the calling user MS NOTE: By analogy to ISDN "compatible terminal". free: property of a user who can accept any attempt by the SwMI to present a call to that user (i.e. allow the call to reach the alerting or answered state) network determined user busy: network declines to allocate an additional call for the user
NOTE: If all of the appropriate user-network interface information channels are busy (channels busy) and either the network does not support the offering of additional calls beyond the number of appropriate channels, or the maximum number of such additional calls has been reached, the network will clear the call and indicate network determined user busy (ITU-T Recommendation I.221 [i.2], clause 3.1.4). path reservation: reservation of resources prior to SS-CCNR Recall in order that a connection path through the SwMI is available when user A accepts the SS-CCNR Recall NOTE 1: Path Reservation would not guarantee that user B will be free when user A accepts the SS-CCNR Recall. NOTE 2: Path reservation is not the preferred solution in the TETRA environment. recall timer: this timer specifies the length of time the network waits for a response from user A to a CCNR Recall retention timer: this timer specifies the period of time the network retains the originating call information after a valid call attempt is released SS-CCNR recall: indication informing user A that user B is no longer busy (in the case of SS-CCNR) or Acceptance of this indication by user A will cause the call to be completed by the SwMI SS-CCNR service duration timer: this timer specifies the length of time that the service is active within the network supplementary service: supplementary service modifies or supplements a bearer service or a tele-service NOTE: A supplementary service cannot be offered to a customer as a stand alone service. It should be offered in combination with a bearer service or a tele-service. Switching And Management Infrastructure (SwMI): all of the TETRA equipment for a Voice plus Data (V+D) network except for subscriber terminals NOTE: The SwMI enables subscriber terminals to communicate with each other via the SwMI. tele-service: type of telecommunications service that provides the complete capability, including terminal equipment functions, for communication between users according to agreed protocols SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)11 user A: specific user that originated the call and requested the supplementary service user B: user that was initially addressed in the original call set up 3.2 Symbols For the purposes of the present document, there are no additional symbols besides the symbols defined and used in ITU-T Recommendation Z.100 [i.3]. 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: ACK ACKnowlegdement ANF Additional Network Feature CC Call Control (functional entity) CC Call Completion CPTI Called Party Type Identifier CR Cancellation Reason DMO Direct Mode Operation
ISDN Integrated Services Digital Network ISI Inter System Interface ITSI Individual TETRA Subscriber Identity LS Line Station MS Mobile Station PDU Protocol Data Unit PISN Private Integrated Services Network SDL Specification and Description Language SS Supplementary Service NOTE 1: The abbreviation SS is only used when referring to a specific supplementary service. SSI Short Subscriber Identity SwMI Switching and Management Infrastructure TE Terminal Equipment TETRA Terrestrial Trunked Radio V+D Voice Plus Data Supplementary service abbreviations For the purposes of the present document, the following abbreviations also apply: SS-AL Ambience Listening
SS-AP Access Priority SS-AS Area Selection SS-BIC Barring of Incoming Calls SS-BOC Barring of Outgoing Calls SS-CAD Call Authorized by Dispatcher SS-CCBS Call Completion on Busy Subscriber SS-CCNR Call Completion on No Reply SS-CF Call Forwarding SS-CFB Call Forwarding on Busy SS-CFNR Call Forwarding on No Reply (generic for both CFNRy and CFNRc) SS-CFNRc Call Forwarding on Mobile Subscriber Not Reachable SS-CFNRy Call Forwarding on No Reply SS-CFU Call Forwarding Unconditional SS-CI Call Identification SS-CLIP Calling Line Identification Presentation SS-CLIR Calling Line Identification Restriction SS-COLP COnnected Line identification Presentation SS-COLR COnnected Line identification Restriction SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)12 SS-CR Call Report SS-CRT Call Retention SS-CW Call Waiting SS-DGNA Dynamic Group Number Assignment SS-DL Discreet Listening SS-HOLD call HOLD SS-IC Include Call SS-LE Late Entry SS-LSC List Search Call SS-PC Priority Call SS-PPC Pre-emptive Priority Call SS-SNA Short Number Addressing SS-TPI Talking Party Identification NOTE 2: Supplementary service abbreviations are also used without "SS-" preamble e.g. "SS-AL" and "AL" are used as appropriate. NOTE 3: The supplementary services list contains also abbreviations that are not used in the present document. 4 SS-CCNR Service Description 4.1 General Completion of Calls on No Reply (SS-CCNR) is a supplementary service which allows a calling User A, when the called User B does not answer the call, to request that the SwMI monitors User B and indicates to User A when User B becomes not busy after a subsequent period of activity at User B's TE. On response by User A to that indication the SwMI will attempt to complete the call to User B. User A can request SS-CCNR when the call is in the alerting phase and after call clearing during the alerting phase before the retention timer expires. The procedures for the SS-CCNR are similar to the procedures specified for the SS-CCBS (EN 300 392-12-13 [5]). Therefore, where possible, the same terms used for CCBS are re-used in the present document and references to the clauses of EN 300 392-12-13 [5] are made. NOTE: Which activities at User B's TE would result in a 'B not busy' indication to User A is outside the scope of the present document. These supplementary services are applicable to all TETRA Voice + Data basic individual circuit services defined in EN 300 392-2 [1]. 4.2 SS-CCNR services offered over the TNSS-SAP Same text as clause 4.2 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.1 CALL-INFORMATION-RELEASE indication Same text as clauseclause 4.2.1 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.2 CALL-INFORMATION-RETENTION indication Same text as clause 4.2.2 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.3 CANCEL request Same text as clause 4.2.3 of EN 300 392-12-13 [5] replacing CCBS by CCNR. SIST EN 300 392-12-23 V1.2.1:2012

ETSI ETSI EN 300 392-12-23 V1.2.1 (2012-04)13 4.2.4 CANCEL confirmation Same text as clause 4.2.4 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.5 CANCELLED indication Same text as clause 4.2.5 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.6 FAILED indication Same text as clause 4.2.6 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.7 LIST-CCNR request Same text as clause 4.2.7 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.8 LIST-CCNR confirmation Same text as clause 4.2.8 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.9 RECALL request Same text as clause 4.2.9 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.10 RECALL-ACCEPTED request Same text as clause 4.2.10 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.11 REQUEST request Same text as clause 4.2.11 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.12 REQUEST confirmation Same text as clause 4.2.12 of EN 300 392-12-13 [5] replacing CCBS by CCNR. 4.2.13 USER-B-FREE indication Same t
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