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International

Telecommunication

Union







Germantown, Maryland, USA, 21 April 2010

SG16/WP1

Network signal processing and

voiceband terminals



Harald Kullmann


ITU
-
T Workshop


on


“Interactions of Voiceband Signal
Processing Functions and their

End
-
to
-
End Coordination”


(Germantown, Maryland, USA, 21 April 2010)

International

Telecommunication

Union

Germantown, Maryland, USA, 21 April 2010

2

Overview of WP1/16

Question 14/16



Voiceband modems and facsimile terminals
and protocols: specification, performance evaluation and
interworking with NGN


Rapporteur: Keith CHU, Teridian Semiconductor Corporation

Question 15/16



Voice gateway signal processing functions and
circuit multiplication equipment / systems


Rapporteur: Dominic HO, Ericsson

Question 16/16



Speech enhancement functions in signal
processing network equipment (SPNE)


Rapporteur: Bob REEVES, BT

Question 18/16



Interaction aspects of signal processing
network equipment (SPNE)


Rapporteur: Harald KULLMANN, Deutsche Telekom

International

Telecommunication

Union

Germantown, Maryland, USA, 21 April 2010

3

Overview on work of WP1/16

Question 14/16


Motivation:

This Question brings together all the aspects of voice
band dial up access and facsimile transmission.


Workprogamm

Revision of
T.38
:
Procedures for real
-
time Group 3 facsimile
communication over IP networks;
V.150.1
:
Modem
-
over
-
IP
networks; Procedures for the end
-
to
-
end connection of V
-
series
DCEs;
V.152
:

Procedures for supporting voice
-
band data over IP
networks

Question 15/16


Motivation:

This Question deals with the specification of voice
gateway equipment. Circuit switched systems and equipment
have traditionally transported voice and voiceband traffic in
international networks.


Workprogamm

Draft new Rec.
G.IP2IP
:
Signal processing functionality and
performance of an IP
-
to
-
IP voice gateway optimised for the
transport of voice and voiceband data; Revision of
G.799.1
:
Functionality and interface specifications for GSTN transport
network equipment for Interconnecting GSTN and IP Networks


International

Telecommunication

Union

Germantown, Maryland, USA, 21 April 2010

4

Overview on work of WP1/16

Question 16/16


Motivation:
This Question deals with network
-
based speech
enhancement devices, including electrical network echo control,
acoustic network echo control, automatic level control devices,
and speech enhancement devices.


Workprogamm

Revision of
G.168
: Digital network echo cancellers including
embedded echo cancellers;
G.160
: Voice Enhancement Devices;
G.169
: Automatic level control devices

Question 18/16

Motivation:
This Question deals
a)

the logic and protocol
requirements needed for the control and coordination of signal
processing functionalities in the networks and terminals;
b)

with
the study of interaction of SPNE, between different SPNE, between
SPNE and terminals, and between SPNE and transmission
systems; and
c)

with the consistency of Recommendations
developed by Questions 15 and 16/16 in the area of SPNE.


Workprogamm

Draft new Rec.
G.SPNE
:
Information and requirements for Signal
Processing Network Equipment (SPNE); Revision of
G.799.2
:
Mechanism for dynamic coordination of signal processing
functions;
G.161
: Interaction Aspects of SPNE

International

Telecommunication

Union

Germantown, Maryland, USA, 21 April 2010

5

SPF/SPNE

Control and

Coordination

Interworking

G.168

G.160

G.169

G.165

G.161

G.799.1

G.799.2

G.763

G.769

Q.115.x

Voice Band Data

T.3x

V.1x

V.2x

V.3x

T.2x

G.776.1

G.767

G.768

G.766

Overview on work of WP1/16

International

Telecommunication

Union

Germantown, Maryland, USA, 21 April 2010

6


ITU
-
T Workshop


on


“Interactions of Voiceband Signal Processing
Functions and their End
-
to
-
End Coordination”


Objectives


Discussion on topics related to Signals Processing Functions in
terminals, networks, end
-
to
-
end coordination and implementation
aspects

Targets


This WS aims at covering the topics related to the identification of
follow
-
up actions to application areas and implementation aspects
and the verification of existing and in
-
progress standards and the
identification of the need for filling gaps.


International

Telecommunication

Union

Germantown, Maryland, USA, 21 April 2010

7


09:30


09:45


Welcome from
Mr. Warren Karapetian and

Mr. Harald Kullmann


Introduction of relevant ITU
-
T work from
the Rapporteurs

09:45


10:30


Session 1:

Objectives: This session aims at covering
the topics related to Speech Quality in
modern Network
-
Terminal Configurations.
Speaker: H.W. Gierlich, HEAD acoustics

10:30


11:00


Coffee break




11:00


11:45


Session 2:

Objectives: This session aims at covering
the topics related to definition and
coordination of Signal Processing
Functions for telephone connections
involving automotive speakerphones.
Speaker: Scott Pennock, QNX




11:45


12:30


Session 3:

Objectives: This session aims at covering
the topics related to using subsystem
performance parameters to optimize end
-
to
-
end performance.

Speaker: Scott Pennock, QNX

Workprogramm of the WS


12:30


14:00

Lunch break




14:00


14:45

Session 4:

Objectives: This session aims at covering
the topics related to interaction aspects of
voiceband signal processing with the focus
on voiceband data modems and network
echo cancellers.

Speaker: Bob Reeves, BT Innovate &
Design




14:45
-

15:30

Session 5:

Objectives: This session aims at covering
the topics related to Recommendations
G.799.1 and G.799.2.

Speaker: Dominic Ho, Ericsson


16:00


16:15

Coffee break




16:15


17:30

Session 6:

This session aims at covering the topics
related to the identification of follow
-
up
actions to application areas and
implementation aspects and the verification
of existing and in
-
progress standards and
the identification of the need for filling gaps.

International

Telecommunication

Union

Germantown, Maryland, USA, 21 April 2010

8

THANK YOU FOR
YOUR

ATTENTION !


Email: Harald.Kullmann@telekom.de

Special thanks to
Texas Instruments and Mr. Warren Karapetian

for
the hosting and organization of the workshop

in Germantown, Maryland, USA