The document provides an overview of the WMT (Wireless Multiplex Terminal) system. It discusses: 1) The WMT uses mobile networks to transmit high quality live video streams and can use multiple data connections in parallel for high bandwidth video. 2) The WMT is a total solution in a small, mobile box that can transmit live camera feeds from anywhere to any other location. 3) The WMT setup allows for point-to-point transmission, transmission over the internet, or transmission through a backend server with a distribution server and switchboard.

1. WMT Technical Training
Wireless Multiplex Terminal
01-09-2012

2. WMT basics
• WMT uses Mobile networks to uplink (live) high quality video streams
• Possibility to use several data connections in parallel (multiplexed) to
send high bandwidth/quality video
• WMT can be used everywhere where (live) camera feeds needs to be
transmitted to any other location
• Total solution in one small mobile box connected to a (semi)
professional camera
Internet

3. WMT set-up possibilities
Internet
WMT
Point-to-point
Internet
Backend server
WMT
With distribution server and
switch board

4. WMT basics – spreading between
mobile networks
3G/4G
Internet
Operator 1
WMT backend
server
3G/4G
Operator 2

5. WMT Requirements– general needs
+ No Hicks + No freezes
Low delay
Small
•22-01-13 •Michel Bais m.bais@triple-it.nl •5

6. Mobile network figures
delay
Throughput versus
delay
bandwidth
Bandwidth
Bandwidth variations
across time
time

7. Data chain
encoder server playout
buffer buffer
s m do m
e
Data pump  Buffer which controles Buffer which solves
video encoder end to end delay (1.5, jitter on the IP line
5, 10 Sec) between 250 mSec or
more dependant on
control

8. WMT – IT architecture
VPN
server
WMT
server
Internet
RTSP traffic RTSP traffic
tunneled in HTTP

9. WMT – video and audio
architecture
• WMT transport architecture is based upon RTSP
• All encoders in the system are RTSP servers
combined with an encoder:
• WMT client: H264 + AAC
• WMT playout: AAC encoder for audio retour
• All decoders are RTSP clients:
• WMT Client: AAC decoder for audio retour
• WMT playout: H264 + AAC

10. WMT – RTSP architecture
External
80.227.132.219
RTSP server &
80.227.132.218 RTSP client &
H264 & H264 &
AAC encoder AAC encoder
Backend server
RTSP client & RTSP servert &
AAC decoder AAC encoder
IP 10.0.100.253
IP 10.0.100.254 internal
internal

11. RTSP video player

12. RTSP audio encoder

13. Backpack

14. WMT GUI-main Status of the connection
(dialing, connecting,
Operator/LAN
connected)
technology
Settings of the
connection
Operator name
Unlock display Bandwidth of the
connection

15. WMT GUI preview Status of the connection
Input (dialing, connecting,
connector connected)
selector Vollume
indication
Input format
selector
Start preview
Unlock display Bandwidth of the
connection

16. WMT GUI settings Status of the connection
(dialing, connecting,
connected)
Operating Quality
modus settings
Delay
settings

17. WMT GUI edit
Put selection in drop
folder of transport
Select
recording
Mark in & mark
out
Delete all recordings

18. WMT GUI transport
Move folder from USB File upload status
stick
bitrate
CPT control

19. WMT – Playout

20. WMT - Playout gui
Transfered export Do not forget to select this
one after playing export

21. Global Setting

22. Diagnostics

23. Debug-1 check server page

24. Debug-2 check status client 1

25. Debug-3 go to client website

26. WMT Server General Setup

27. Hardware setup
Follow these steps to set up the hardware.
 Connect the system with the 220V / 110V power cord
 Connect a laptop or PC with the second Ethernet port. The first Ethernet port
is
located on the left, close to the power supply
 Configure the IP interface of the PC with the IP address 198.18.0.50, and
use
subnet mask 255.255.255.0
 Browse to this address: http://198.18.0.1
 Select “Global” from the column on the left.
 When you’re asked for a username and password, leave username empty
and use

28. WMT Server Global Setting

29. CONFIGURATION OF THE WMT SERVER SOFTWARE
Basic setup per client
 After configuring the IP address, click on settings of the client you want to configure.
The number should be the same as on the WMT client
 Enter the license key of the WMT client (use copy and paste from the configuration
website of the WMT)
 Leave all other settings on default.
 Press “Save” and browse to “Overview”. As soon the WMT client connects,
listening should turn into connected.