PortaNet User Manual
137 of 156
XII.1.3
There is no audio output at either end
Some things that can cause these problems are the following:
1.
The communication line is failing.
2.
The remote codec is not working properly.
3.
The equipment may be faulty. The easiest way to test it is to make a ‘loop
call’, by calling from the unit to itself and check if everything work fine.
4.
The codecs involved in the communication are not compatible.
5.
Both codecs are configured in AUTO mode (automatic encoder mode).
6.
The audio settings are wrong configured in both codecs.
XII.1.4
Audio distortion
It is possible to modify the gains on inputs and outputs, so check if this has been
set properly. The audio input and output levels can be monitored from the
display by pressing the INF key, or from the web page. Also, the input level for
the program line (line 1) is indicated on the vu-meter on the top panel.
Another cause could be that the other end is using digital audio such us AES/EBU
as an audio source, and no AES/EBU signal is being sent, or the equipment is
faulty.
XII.2
ISDN communication problems
Here follows some common problems and solutions when communicating via
ISDN networks. Applicable to some Prodys Codecs.
XII.2.1
Unit cannot make outgoing calls
1.
If the equipment is not connected correctly to an ISDN socket, it cannot
make or receive any calls. Even though the ISDN connection is apparently
correct, the line status can be checked by making a call. If the line does
not respond properly, the message “NO PHYSICAL LINE” is displayed.
Some ISDN lines work in a way such that there is no TEI (Terminal
End-point Identifier) assigned until a first call is attempted.
2.
The ISDN protocol does not correspond to that of the provided line.
Summary of Contents for PortaNet
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