16 IPTV tests
190
ARGUS 152
16.4 Video on demand (VoD)
In VoD mode, ARGUS requests a datastream from a VoD server. Depending on the access
type, ARGUS replaces the STB or the modem and the STB.
VoD services are often provided using RTSP, as this control protocol additionally supports
control functions. However, ARGUS also supports the protocols FTP, HTTP and MMS
where needed. During the test, ARGUS monitors the regularity of the incoming packets, the
loss of packets, packet and PCR jitter and other possible errors.
Depending on the preset limit values, ARGUS performs an OK/FAIL assessment and
shows important metadata regarding the received VoD stream.
You can configure three user-defined VoD profiles (where the xDSL connection is already
established, the connection parameters, e.g. the target value, are locked):
Protocol-independent parameters:
ARGUS in status screen.
The VoD test is performed using the
service of that name.
The following example illustrates the
procedure and its special features.
<Edit>
A virtual line is assigned to
the service VoD.
<Profile>
See page 30 for profile
settings.
<Start>
Starts the service.
Select the profile you wish to edit.
The selected profile appears in the
display in blue. The default profile
is indicated with a in the display.
ARGUS adopts the parameters
from the default profiles for
establishing the Ethernet or xDSL
connection and conducting the VoD
test.
ARGUS uses the marked profile as
the default profile and switches to
the menu Settings.
Continued on
next page
Test parameters