ETSI TS 102 250-4 V2.2.1 (2011-04)

Speech and multimedia Transmission Quality (STQ); QoS aspects for popular services in mobile networks; Part 4: Requirements for Quality of Service measurement equipment

RTS/STQ-000176m

General Information

• Status: Published
• Publication Date: 28-Apr-2011
• Technical Committee: STQ MOBILE - STQ Mobile
• Current Stage: 12 - Completion
• Due Date: 29-Apr-2011
• Completion Date: 29-Apr-2011

Standards Content (Sample)

Technical Specification
Speech and multimedia Transmission Quality (STQ);
QoS aspects for popular services in mobile networks;
Part 4: Requirements for Quality of Service
measurement equipment
�
2 ETSI TS 102 250-4 V2.2.1 (2011-04)

Reference
RTS/STQ-000176m
Keywords
3G, GSM, network, QoS, service, speech
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ETSI
3 ETSI TS 102 250-4 V2.2.1 (2011-04)
Contents
Intellectual Property Rights . 6
Foreword . 6
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Abbreviations . 9
4 Overview . . 10
4.1 General Aspects . 10
4.2 Considerations on trigger points . 11
5 General requirements . 11
5.1 General requirement for data logging . 11
5.2 Overview . 12
5.3 Required information for logging . 12
5.3.1 Information on Measurement Setup . 12
5.3.1.1 General Information . 12
5.3.1.2 Information on User Equipment in use . 13
5.3.1.3 Information on Store-And-Forward Setups . 13
5.3.1.4 Information on Data Test Setups . 13
5.3.2 Measurement Data . 14
5.3.3 Status Information . 14
5.3.4 Trigger Points . 14
5.3.5 QoS Parameters . 14
5.4 Test-UE . 14
5.5 Antennas . 14
5.6 Controller/processor/storage. 15
5.7 Man Machine Interface (MMI) . 15
5.7.1 Local Controlled Systems . 15
5.7.2 Remote Controlled Systems . 15
5.8 Time sources . 15
5.9 Environmental conditions . 15
6 Fixed QoS Test-equipment (FQT) . 16
6.1 General . 16
6.2 Controller . 16
6.3 Time-sources . 16
6.4 Environmental conditions . 16
6.5 FQT for Telephony Measurements. 16
6.5.1 Common Aspects . 16
6.5.2 Telephony Voice . 16
6.5.3 Telephony Video . 17
6.6 FQT for store-and-forward services . 17
6.6.1 Common Aspects . 17
6.7 FQT for Data Measurements . 17
7 Mobile QoS Test-equipment (MQT) . 17
7.1 General . 17
7.2 Controller . 17
7.3 Geographical positioning . 18
7.3.1 Format of geographical co-ordinates . 18
7.3.2 Accuracy . 18
7.4 Time-sources . 18
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4 ETSI TS 102 250-4 V2.2.1 (2011-04)
7.5 Environmental conditions . 18
7.6 MQT for Telephony Measurements . 18
7.6.1 Common Aspects . 18
7.6.2 Telephony Voice . 19
7.6.3 Telephony Video: . 19
7.7 MQT for store-and-forward services . 19
7.8 MQT for Data Measurements . 19
7.8.1 Common Aspects . 19
7.8.2 MQT for FTP . 19
7.8.3 MQT for E-Mail . 19
7.8.4 MQT for HTTP . 19
7.8.5 MQT for WAP . 20
7.8.6 MQT for streaming services . 20
8 Mobile based measurement equipment . 20
Annex A (informative): QoS parameter export . 21
A.1 Overview . . 21
A.2 XML Bodies . . 21
A.2.1 . 21
A.2.2 Configuration . 23
A.2.2.1 . 23
A.2.2.2 . 23
A.2.2.3 . 23
A.2.2.4 . 24
A.2.2.5 . 24
A.2.3 Measurement Results . 25
A.2.3.1 . 25
A.2.3.2 . 25
A.2.3.3 . 26
A.2.3.4 . 26
A.2.3.5 . 27
A.2.4 Data Dictionary . 28
A.2.4.1 GPS . 28
A.2.4.2 GSM. 29
A.2.4.2 UMTS . 31
A.2.4.3 Layer 3 Message PDU Types . 33
A.2.4.4 HSDPA . 35
A.2.4.5 HSUPA . 37
A.3 Schema . 40
A.4 Example . 40
Annex B (informative): RF COMBINER . 41
B.1 What is blocking? . 41
B.2 Which parameters have an impact on the effect of blocking? . 41
B.3 The Standards . 41
B.4 The Situation . 42
B.4.1 One test mobile transmits, the other one receives . 42
B.4.2 Antennas on the roof of a car . 42
B.4.3 Conclusion . 42
B.5 Possible Solutions . 43
B.5.1 Attenuators . 43
B.5.2 Recommendations . 43
B.5.2.1 Benchmarking tests . 43
B.5.2.2 Coverage tests . 43
B.5.3 Other equipment involved . 43
B.5.3.1 Scanners . 43
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5 ETSI TS 102 250-4 V2.2.1 (2011-04)
B.5.3.2 GPS receiver 1,2/1,5 GHz . 43
B.5.3.3 Risk for Scanner and GPS receiver . 43
B.5.4 Mixed Service GSM/WCDMA . 43
Annex C (informative): Bibliography . 44
History . 45

ETSI
6 ETSI TS 102 250-4 V2.2.1 (2011-04)
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://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 Speech and multimedia
Transmission Quality (STQ).
The present document is part 4 of a multi-part deliverable covering the QoS aspects for popular services in mobile
networks, as identified below:
Part 1: "Assessment of Quality of Service";
Part 2: "Definition of Quality of Service parameters and their computation";
Part 3: "Typical procedures for Quality of Service measurement equipment";
Part 4: "Requirements for Quality of Service measurement equipment";
Part 5: "Definition of typical measurement profiles";
Part 6: "Post processing and statistical methods";
Part 7: "Network based Quality of Service measurements".
Part 1 builds an umbrella document for this multi-part deliverable. It summarizes the basics of Quality of Service,
always seen from the user's perspective. Differences to Quality of Experience (QoE) are also discussed. In extension to
generic definitions, specific definitions for this multi-part deliverable are stated here. Furthermore, it gives guidance to
assure that QoS assessments can be conducted in a meaningful way and proposes an according process.
Part 2 defines QoS parameters and their computation for popular services in mobile networks. The parameter definition
is split into several parts. It contains an abstract definition which gives a generic description of the parameter, an
abstract equation and the corresponding user and technical trigger points.
The harmonized definitions given in part 2 are considered as prerequisites for the comparison of QoS measurements and
measurement results.
Part 3 describes the measurement procedures needed to perform the measurements of QoS parameters in line with the
definitions given in part 2, applying the test profiles defined in part 5.
The present document defines the minimum requirements of QoS measurement equipment for mobile networks in the
way that the values and trigger points needed to compute the QoS parameter as defined in part 2 can be measured
following the procedures defined in part 3. Test equipment fulfilling the specified minimum requirements will allow
performing the proposed measurements in a reliable and reproducible way.
Part 5 specifies typical measurement profiles which are required to enable benchmarking of different mobile networks
both within and outside national boundaries.
Part 6 describes procedures to be used for statistical calculations in the field of QoS measurement of mobile networks
using probing systems.
Part 7 describes how Quality of Service measurements should be done inside the network without direct access to the
end point terminal.
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7 ETSI TS 102 250-4 V2.2.1 (2011-04)
Introduction
All the defined quality of service parameters and their computations are based on field measurements. That indicates
that the measurements were made from users point of view (full End-to-end perspective, taking into account the needs
of testing).
It is assumed that the end user can handle his user equipment and the services he wants to use (operability is not
evaluated at this time). For the purpose of measurement it is assumed that:
• the service is not barred for any reason;
• routing is defined correctly without errors; and
• the target subscriber equipment is ready to process the service request.
Speech and video quality values measured should only be applied by calls ended successfully for statistical analysis.
However, measured values from calls ended unsuccessfully (dropped) should be available for additional evaluations and
therefore, must be stored.
Further preconditions may apply when reasonable.
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8 ETSI TS 102 250-4 V2.2.1 (2011-04)
1 Scope
The present document defines the minimum requirements of QoS measurement equipment for digital wireless networks
in the way that the values and trigger-points needed to compute the QoS parameter as defined in TS 102 250-2 [3] can
be measured following the procedures defined in TS 102 250-3 [4].
Test-equipment fulfilling the specified minimum requirements, will allow performing the proposed measurements in a
reliable and reproducible way.
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 TS 100 910: "Digital cellular telecommunications system (Phase 2+); Radio transmission
and reception (3GPP TS 05.05)".
[2] ETSI TS 102 250-1: "Speech and multimedia Transmission Quality (STQ); QoS aspects for
popular services in mobile networks; Part 1: Assessment of Quality of Service".
[3] ETSI TS 102 250-2: "Speech and multimedia Transmission Quality (STQ); QoS aspects for
popular services in mobile networks; Part 2: Definition of Quality of Service parameters and their
computation".
[4] ETSI TS 102 250-3: "Speech and Multimedia Transmission and Quality (STQ); QoS aspects for
popular services in mobile networks; Part 3: Typical procedures for Quality of Service
measurement equipment".
[5] ETSI TS 102 250-5: "Speech and multimedia Transmission Quality Aspects (STQ); QoS aspects
for popular services in mobile networks; Part 5: Definition of typical measurement profiles".
[6] Void.
[7] Void.
[8] ETSI ETS 300 607-1: "Digital cellular telecommunications system (Phase 2) (GSM); Mobile
Station (MS) conformance specification; Part 1: Conformance specification; (GSM 11.10-1
version 4.28.1)".
[9] ETSI TS 125 101: "Universal Mobile Telecommunications System (UMTS); User Equipment
(UE) radio transmission and reception (FDD) (3GPP TS 25.101 version 9.6.0 Release 9)".
[10] ETSI TS 127 007: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); LTE; AT command set for User Equipment (UE)
(3GPP TS 27.007 version 9.6.0 Release 9)".
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9 ETSI TS 102 250-4 V2.2.1 (2011-04)
[11] ETSI TS 127 005: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); LTE; Use of Data Terminal Equipment - Data Circuit
terminating Equipment (DTE-DCE) interface for Short Message Service (SMS) and Cell
Broadcast Service (CBS) (3GPP TS 27.005 version 9.0.0 Release 9)".
[12] ETSI EN 300 392-5: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D) and Direct
Mode Operation (DMO); Part 5: Peripheral Equipment Interface (PEI)".
[13] ETSI TS 102 250-4: "Speech and multimedia Transmission Quality (STQ); QoS aspects for
popular services in mobile networks; Part 4: Requirements for Quality of Service measurement
equipment".
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] ETSI TR 102 581: "Speech Processing, Transmission and Quality Aspects (STQ); A Study on the
Minimum Additional Required Attenuation on the Antenna Path of the Field Test Equipment".
3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
rd
3GPP 3 Generation Partnership Project
CI Cell Identity
CTR Controler
FQT Fixed QoS Test equipment
FTP File Transfer Protocol
GPS General Positioning System
GSM Global System for Mobile communication
HTTP HyperText Transfer Protocol
IMAP Internet Message Access Protocol
IMEI International Mobile Equipment Identity
NOTE: http://de.wikipedia.org/wiki/International_Mobile_Equipment_Identity.
IMSI International Mobile Station Identifier
IP Internet Protocol
ISDN International Subscriber Digital Network
LAC Location Area Code
LC Local Control
MCC Mobile Country Code
MMI Man Machine Interface
MNC Mobile Network Code
MQT Mobile QoS Test equipment
MQT-LC Mobile QoS Test equipment Local Control
MQT-RC Mobile QoS Test equipment Remote Control
MSC Mobile Switching Centre
MSN Mobile Station Number
PC Personal Computer
PDN Packet Data Network
PMN Public Mobile Network
POP3 Post Office Protocol version 3
PROC Processor
PSTN Public Switching Telephone Network
PWR Power Supply
QoS Quality of Service
QSI Quality Sequence Indicator
RC Remote Control
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10 ETSI TS 102 250-4 V2.2.1 (2011-04)
RF Radio Frequency
RNC Radio Network Controller
SIM Subscriber Identity Module
SMS Short Message Service
SMSC Short Message Service Centre
SMTP Simple Mail Transfer Protocol
TCP Transmission Control Protocol
TETRA TErestrial Trunked RAdio
TS Timeslot
UE User Equipment
UMTS Universal Mobile Telecommunications System
UTC Coordinated Universal Time
WAP Wireless Application Protocol
WCDMA Wide band Code Division Multiple Access
WGS-84 World Geodetic System 1984
XML eXtended Mark up Language
4 Overview
4.1 General Aspects
All tests are based on emulation of a typical user using services provided in a public mobile network (PMN). All of the
services to be tested (see TS 102 250-2 [3]) can be emulated by the Mobile QoS Test-equipment (MQT) which can be
installed in a vehicle, can be carried around by a pedestrian or is installed for semi-stationary use (e.g. office
environment).
Test scenarios need to distinguish the following principal user cases.
1) User-to-user services (typically telephony).
2) Store-and-forward services (e.g. SMS).
3) Information services (e.g. accessing the internet or FTP download).
4) Push services.
Figure 1
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11 ETSI TS 102 250-4 V2.2.1 (2011-04)
Some of the services require test-equipment connected to a non-mobile network emulating the counterpart of the typical
mobile user or the host offering the service. This part will be called Fixed QoS Test-equipment (FQT). The FQT may be
connected via a public network (PSTN, ISDN, PDN) or via a network internal connection point (e.g. at MSC). The FQT
for type 3) and 4) services could be composed as a (virtual) Internet Service Provider.
Below, requirements will be described on a per scenario basis. Those requirements not belonging to a specific scenario,
e.g. antenna requirements will be grouped together.
Depending on how far the MQT can be automated or not, we can distinguish between:
• MQT-LC: local control and operation; or
• MQT-RC: remote control and operation.
Although the same type of classification (-LC or -RC) can be made for FQT, most of the FQT are remote controlled.
4.2 Considerations on trigger points
Without loss of generality it can be assumed that any feasible test equipment will contain some kind of communication
terminal (UE) which may be a special type (e.g. a Trace Phone) or a standard UE. Also, it can be assumed that each
such device will provide information from different communication layers, from Application Layer (close to the user
interface) down to lower layers, e.g. operating-system events, TCP/IP layer, or Layer 3 signalling information, which is
used as trigger points for QOS PARAMETERS processing.
When considering the event chain, action is typically triggered by some emulated user action which finally causes some
action on the air interface. This process of event propagation is deterministic, allowing some kind of mapping between
layers, in the limits of available information, but will inevitably be associated with some communication and processing
delay in each stage.
Therefore, choice of the layer to get trigger point information from determines the view expressed in a QOS
PARAMETERS. Generally, choosing lower-level events such as Layer 3 gives a more network-centric view, while
events on higher levels tend to produce views more user-related. From this, the following guidelines result:
• Within the same QoS PARAMETERS, the source layer for events used as trigger points should be the same.
• In benchmarking, all networks under test should be tested using the same type of UE, and QOS
PARAMETERS for all networks under test should use trigger points from the same layer.
• When changing the source layer for a given trigger point, changes in QOS PARAMETERS should be
expected, and respective calibration measurements should be taken to assess influence on QOS
PARAMETERS both quantitatively and qualitatively.
5 General requirements
5.1 General requirement for data logging
The measurement system must provide means to collect and store reliably all relevant measurement data. Additionally
all configuration parameters have to be stored to be able to reproduce the test.
The system has to provide means to detect and sort out invalid measurement cycles to avoid misrepresenting statistics.
The evaluation of the measured values is typically done during post processing. Measurement cycles which are removed
from the measured data have to be reported.
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12 ETSI TS 102 250-4 V2.2.1 (2011-04)
5.2 Overview
The typical components of the Mobile QoS Test-equipment (MQT) will be as illustrated in Figure 2.

(1) Test-UE: User equipment emulating the typical user device (1…n).
(2) Antenna: Test-UE antenna or external antenna.
(3) Controller: Controls all the active parts in MQT.
(4) Processor Controlling the Test-UE and Pre-processing measurement data.
Optionally the tasks of the processor can be moved into controller.
(5) Storage: Storage of measurement data and programs.
(6) MMI:  Man Machine Interface for control and configuration of a MQT-LC or for diagnostics in
case of a MQT-RC.
(7) PS:  Positioning System (GPS or Indoor Navigation).
(8) PWR:  Power Supply.
Figure 2
5.3 Required information for logging
5.3.1 Information on Measurement Setup
Measurement setup needs to be reproduced if necessary. This requires that the configuration of the measurement
equipment, with which the measurement has been done needs to be recorded.
NOTE: However, the measurement results not only depend on the configuration of the measurement equipment,
also other circumstances like day of the week and time of day influence the measurement results
considerably.
5.3.1.1 General Information
The following list is considered to be a required minimum.
Information automatically collected:
• Versions of measurement equipment:
- Hardware Version.
- Software Version of Measurement Application.
- Operating System Version (Operation System and Service Pack).
• Date, time of day (UTC time + time zone).
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13 ETSI TS 102 250-4 V2.2.1 (2011-04)
Manually entered information:
• User.
• Comment.
• All other information, which cannot be collected automatically, on test case control parameters required to,
re-run the test case under the same conditions.
5.3.1.2 Information on User Equipment in use
For the setup of the User Equipment in use, the following list of parameters is required as a minimum:
Information automatically collected:
• Type of User Equipment.
• Firmware version.
• Unique UE ID (e.g. IMEI, Serial Number, MAC, etc.).
• IMSI (configuration of SIM card can have a significant influence on the measurement result).
• Software Version of driver for operating system, if used.
• All settings of the control software.
Manually entered information:
• Antenna:
- Type.
- Extra attenuation.
- Total Cable loss (Cables, RF combiners, etc.).
5.3.1.3 Information on Store-And-Forward Setups
The following information has to be logged:
• Number of Service Centre.
• Access Parameters.
• Transmitted Message, Video and/or Audio.
• Timeout Values.
5.3.1.4 Information on Data Test Setups
For Data Tests the following list represents the minimum required parameters.
Information automatically collected:
• Any stack parameter configuration or difference to the standard of the used operating system, e.g. information
about TCP stack parameter changes.
• Servers.
• All settings of the control software concerning the Data Test Setup, e.g. FTP Settings.
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14 ETSI TS 102 250-4 V2.2.1 (2011-04)
5.3.2 Measurement Data
Each measured item has to be stored with the corresponding timestamp.
Additional to the trigger points as specified in TS 102 250-2 [3], the measurement equipment shall collect the following
list of data:
• Network ID (MCC, MNC, CI, LAC), respective data items with a rate sufficient to track the User Equipments
behaviour.
5.3.3 Status Information
The system has to record information about the status and progress of the current measurement.
5.3.4 Trigger Points
The system has to record all necessary trigger points. See TS 102 250-2 [3].
5.3.5 QoS Parameters
If possible, QoS Parameters shall be calculated during the measurement and be shown on the MMI.
For test cases on distributed systems the calculation process for QoS Parameters has to be done in a post process.
5.4 Test-UE
Basic requirements on the Test-UE:
• Compliant to corresponding specifications (e.g. 3GPP, TETRA).
• For usage of the AT interface for trigger point measurements, the UE has to be conform to the corresponding
specifications, e.g. TS 127 007 [10] and TS 127 005 [11] for 3GPP, and EN 300 392-5 [12] for TETRA.
• Remote controllable to initiate the QoS tests with required parameter settings.
• Test UE delivers the necessary data, which is required for the QoS test.
• For benchmark tests only User Equipments with the same capabilities can be used. (e.g. max. number of TS
allowed, best type of speech codec, etc.).
• Depending on the test case additional requirements may be relevant.
5.5 Antennas
Depending on the test case, the Test-UE's own antenna or an external antenna has to be used.
Where applicable, the antennas have to be arranged in a well defined fixed way with a minimum distance to each other
reducing RF-influence on an acceptable level in an equal radio environment. The coupling loss between 2 UEs should
be minimum 40,5 dB (as specified in clause 2 of TS 100 910 [1]).
NOTE 1: Certain types of system integration will not allow satisfying these requirements, due to the limitation of
space (e.g. backpack system). However, the antennas should be mounted on pre-determined points of the
system which guarantee a minimum RF-influence.
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15 ETSI TS 102 250-4 V2.2.1 (2011-04)
External antennas are typically used for measurements in vehicles (car, train, ship). Two RF scenarios can be defined
for vehicles:
1) User with car kit and external antenna:
- Car mounted antenna with no extra attenuation has to be used.
2) User without car kit, using the User Equipment only (In-car use):
- Internal antenna of User Equipment can be used.
NOTE 2: Simulation without body loss.
or
- External antenna connected with an overall attenuation of approximately 13 dB (cable loss plus extra
attenuation) should be used.
NOTE 3: More information about antenna attenuation is to be found in TR 102 581 [i.1].
5.6 Controller/processor/storage
The performance of the unit should be high enough and have no measurable impact on the correctness of the data
collection. If the unit runs out of any resources it shall inform the user on the MMI.
5.7 Man Machine Interface (MMI)
5.7.1 Local Controlled Systems
The MMI has to allow full operation of the system by the operator. The main functionalities can be monitored and the
operator is alerted in case of main failures. Some basic failure diagnostic is possible.
5.7.2 Remote Controlled Systems
An MMI can be connected to perform basic tests and some failure diagnostics. Unattended systems should provide
means to generate alarms upon operational faults in the system.
5.8 Time sources
The clocks on the measurement systems have to be synchronized periodically. The required accuracy of the timestamps
of the measurement item is:
• Relative: 20 ms.
• Absolute: 250 ms.
5.9 Environmental conditions
The measurement system has to meet at least the minimal environmental conditions requirements defined in clauses 6.4
and 7.5.
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16 ETSI TS 102 250-4 V2.2.1 (2011-04)
6 Fixed QoS Test-equipment (FQT)
6.1 General
Depending on the test-scenarios defined in clause 4 of the present document, there will be different requirements for the
FQT and MQT.
6.2 Controller
The performance of the unit should be high enough and have no measurable impact on the correctness of the data
collection.
6.3 Time-sources
See clause 5.8.
6.4 Environmental conditions
The FQT has to meet the following environmental conditions:
• Temperature: 5 °C to 40 °C.
• Humidity: maximum 90 %.
6.5 FQT for Telephony Measurements
6.5.1 Common Aspects
For the user-to-user services different FQTs can be used. Also the connection point to the network can vary between an
ISDN or PSTN line and a direct link at the MSC/RNC.
However, the used type of server and the connection have to be stored in the final measurement result.
The topology of the distributed system (MQT and FQT) results in the necessity of merging the measurement results
made on the FQT and on the MQT. The result will be merged on the time base.
A unique identifier has to be included in measurement files to be able to identify what files belong to the same
measurements. This identifier has to be generated automatically by the measurement system.
6.5.2 Telephony Voice
Calculating Telephony QoS parameters including speech quality requires a counterpart on the fixed network. This is
typically a PC which is connected to the PSTN. An application on the PC answers the incoming calls from the MQT or
generates calls to the MQT.
A FQT application for Telephony Voice Service handles the CS connections of the voice calls, like an answering
machine. It controls 1 to n MSN(s). Each MSN has its own profile for incoming or outgoing calls. The FQT application
has to have the following capabilities:
• Auto answering of incoming calls.
• Speech Quality Assessment of the incoming voice calls (uplink).
• Providing speech samples for the downlink.
• Generating MT calls.
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17 ETSI TS 102 250-4 V2.2.1 (2011-04)
6.5.3 Telephony Video
For telephony video different types of connection points are available:
• ISDN line/direct connection at MSC/RNC.
• UMTS User Equipment with video telephony application.
• UMTS User Equipment used as modem with a video telephony stack on the PC.
A FQT application for Telephony Video handles the CS connections of the video calls. It controls 1 to n connection
points. Each connection point has its own profile for incoming calls. The FQT application has to have the following
capabilities:
• Auto answering
...