ETSI TS 100 392-3-8 V1.2.1 (2010-03)

Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 8: Generic Speech Format Implementation

RTS/TETRA-03196

General Information

• Status: Published
• Publication Date: 04-Mar-2010
• Technical Committee: TCCE 3 - TCCE Air Interface and Network Protocols
• Current Stage: 12 - Completion
• Due Date: 16-Feb-2010
• Completion Date: 05-Mar-2010

Standards Content (Sample)

ETSI TS 100 392-3-8 V1.2.1 (2010-03)
Technical Specification


Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI);
Sub-part 8: Generic Speech Format Implementation

---------------------- Page: 1 ----------------------
2 ETSI TS 100 392-3-8 V1.2.1 (2010-03)



Reference
RTS/TETRA-03196
Keywords
interworking, TETRA, V+D, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
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 2010.
All rights reserved.

TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI TS 100 392-3-8 V1.2.1 (2010-03)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Overview . . 8
5 PDU format and procedures . 8
5.1 General on traffic PDU contents . 8
5.2 TETRA ISI payload. 8
5.2.1 TETRA ISI payload encoding . 8
5.2.2 Traffic PDU . 8
5.3 Traffic PDU information elements . 9
5.3.1 Framing rate . 9
5.3.2 Frame number . 9
5.3.3 Information element control . 10
5.3.4 Additional information . 10
5.3.5 Call reference . 10
5.3.6 Traffic type . 10
5.3.7 Contents control . 11
5.3.8 Contents control and payload. 11
Annex A (informative): TETRA ISI channel mapping . 13
A.1 TETRA ISI channel mapping for E1 B-channels in phase 1 . 13
Annex B (normative): User information transport . 15
B.1 General . 15
B.2 LAPF Usage . 15
B.3 HDLC usage . 17
Annex C (informative): Physical layer and mapping . 18
C.1 Physical layer . 18
C.2 Mapping structure . 18
Annex D (informative): Change requests . 19
History . 20

ETSI

---------------------- Page: 3 ----------------------
4 ETSI TS 100 392-3-8 V1.2.1 (2010-03)
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://webapp.etsi.org/IPR/home.asp).
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 Technical Specification (TS) has been produced by ETSI Technical Committee Terrestrial Trunked Radio
(TETRA).
The present document is part 3, sub-part 8 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)";
EN 300 392-3-1: "General design";
EN 300 392-3-2: "Additional Network Feature Individual Call (ANF-ISIIC)";
EN 300 392-3-3: "Additional Network Feature Group Call (ANF-ISIGC)";
EN 300 392-3-4: "Additional Network Feature Short Data Service (ANF-ISISDS)";
EN 300 392-3-5: "Additional Network Feature Mobility Management (ANF-ISIMM)";
TS 300 392-3-6: "Speech Format Implementation for circuit mode transmission";
TS 300 392-3-7: "Speech Format Implementation for Packet Mode Transmission";
TS 300 392-3-8: "Generic Speech Format Implementation";
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";
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";
ETSI

---------------------- Page: 4 ----------------------
5 ETSI TS 100 392-3-8 V1.2.1 (2010-03)
TR 100 392-17: "TETRA V+D and DMO specifications";
TS 100 392-18: "Air interface optimized applications".
NOTE: 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.
Introduction
Originally there were two different speech transportation format options defined for the TETRA InterSystem
Interface (ISI) speech transmission one for circuit mode support and another for packet mode support.
The two options allow different techniques in designing and interconnecting TETRA Switching and Management
Infrastructure (SwMIs). Those based on circuit mode transmission technology can use the complementary circuit mode
based option, and those based on packet mode transmission technology can take advantage of the present document of
the ISI.
The reason for having two options is found in the nature of existing TETRA SwMIs from various manufacturers. The
existing SwMIs can generally be divided into two types: those that use packet switched technology and those that are
using a circuit switched technology.
When connecting a circuit switched SwMI to a packet switched SwMI there must be a conversion performed from one
technology to the other.
The present document defines a compromise solution in the speech transportation format so that no additional
conversion is required. The present document should be applied in new designs instead of TS 100 392-3-6 [i.7] and
TS 100 392-3-7 [i.8].
ETSI

---------------------- Page: 5 ----------------------
6 ETSI TS 100 392-3-8 V1.2.1 (2010-03)
1 Scope
The present document specifies speech transmission format implementation independent of SwMI type.
The present document defines the format of user information that is transported between two SwMIs using the TETRA
ISI.
The present document covers how TETRA air interface circuit mode traffic is encoded for transport over various media.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
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 indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI EN 300 392-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air
Interface (AI)".
[2] ETSI EN 300 392-3-1: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 1: General Design".
[3] ETSI EN 300 395-2: "Terrestrial Trunked Radio (TETRA); Speech codec for full-rate traffic
channel; Part 2: TETRA codec".
[4] ETSI ETS 300 402-3: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling
System No. one (DSS1) protocol; Data link layer; Part 3: Frame relay protocol specification".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ITU-T Recommendation G.703: "Physical/electrical characteristics of hierarchical digital
interfaces".
[i.2] ITU-T Recommendation G.704: "Synchronous frame structures used at 1544, 6312, 2048, 8448
and 44 736 kbit/s hierarchical levels".
ETSI

---------------------- Page: 6 ----------------------
7 ETSI TS 100 392-3-8 V1.2.1 (2010-03)
[i.3] ITU-T Recommendation Q.920: "ISDN user-network interface data link layer -General aspects".
[i.4] ITU-T Recommendation Q.920 Amendment 1: "ISDN user-network interface data link layer -
General aspects".
[i.5] ITU-T Recommendation Q.921: "ISDN user-network interface - Data link layer specification".
[i.6] ITU-T Recommendation Q.921 Amendment 1: "ISDN user-network interface - Data link layer
specification".
[i.7] ETSI TS 100 392-3-6: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 6: Speech format implementation
for circuit mode transmission".
[i.8] ETSI TS 100 392-3-7: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 7: Speech Format
Implementation for Packet Mode Transmission".
[i.9] ITU-T Recommendation I.431: "Primary rate User-Network interface - Layer 1 specification".
[i.10] ITU-T Recommendation I.233.1: "ISDN Frame Relaying Bearer Service".
[i.11] ITU-T Recommendation Q.922: "Digital subscriber Signalling System No. 1 (DSS 1); Data Link
Layer; ISDN Data Link Layer Specification for Frame Mode Bearer Services".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document the following terms and definition applies:
frame rate: nominal time between start of two consecutive frames
NOTE: There may be gaps in the flow of the frames so that a frame is missing in its normal time position.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACELP Algebraic CELP
DLCI Data Link Connection Identifier
DMO Direct Mode Operation
E1 European format for digital transmission
FCS Frame Check Sequence
HDLC High level Data Link Control
ISDN Integrated Services Digital Network
ISI Inter System Interface
LAPF Link Access Procedures to Frame mode bearer services
MS Mobile Station
PDU Protocol Data Unit
PVC Permanent Virtual Circuit
SwMI Switching and Management Infrastructure
TETRA Terrestrial Trunked Radio
V+D Voice plus Data
ETSI

---------------------- Page: 7 ----------------------
8 ETSI TS 100 392-3-8 V1.2.1 (2010-03)
4 Overview
Independently of SwMI implementation, TETRA speech and circuit mode data traffic is carried in packets between two
TETRA systems. The TETRA traffic is carried in PDUs that may be transported in various media.
In ISI phase 1 one TETRA ISI call may be carried per 64 kbit/s slot on the 2 Mbit/s E1 link. Other transport
mechanisms and scenarios are outside the present document.
Since the transmission defined in the present document is "packet mode", packets may be subject to jitter. The
maximum jitter is a SwMI specific characteristic. The value of the allowable maximum jitter value is outside the scope
of the present document.
5 PDU format and procedures
5.1 General on traffic PDU contents
As TETRA is a radio system normally at least one end of the communication is using air interface. The structure of the
TETRA air interface sets some requirements on the traffic ISI PDU contents and format on the ISI. The main structure
of the air interface and speech encoding is retained and traffic ISI PDU supports:
• 30 ms and 60 ms speech frames;
• 170/3 ms (~56,67 ms) and 60 ms frame rates;
• ACELP speech coding and reservation for other codecs; and
• Call reference.
The call reference is used to link the traffic and call instance together especially in scenarios where no virtual
connection is applied.
Optionally a fully stolen or otherwise not available frame may be indicated to help an easier re-use of that timeslot for
other signalling purposes at the terminating system.
5.2 TETRA ISI payload
5.2.1 TETRA ISI payload encoding
The protocol has been designed to support TETRA speech codec frames (single/dual), circuit mode data and U-plane
services. However, the present document only describes in detail the PDU formats for TETRA speech codec frames
(single and dual) and U-plane services. Nevertheless, this prin
...