Prodys ProntoNet LC - VI.6 The ProntoNetLC operating as IP codec (Proprietary Protocols)

ProntoNetLC User Manual 115
Taking into account the previous table the user must also bear in mind the
following:
1. Over X21 or ISDN, it is only possible to set different encoding and decoding
algorithms independently, with those algorithms that support automatic
synchronising. For example, it is possible to transmit on G722 and receive on
MPEG Layer II.
Although G711 is detected automatically in ISDN mode, the Encoder is also
configured automatically because it is not possible to use it in any other
combination.
2. If we want to receive an algorithm that does not support automatic
synchronisation it is necessary to configure the Encoder to the same
algorithm. In the case of apt-X, the compression parameters on the encoder
should match those on the decoder.
3. If we want the Encoder to switch to the algorithm detected by the Decoder,
the Encoder should simply be set to AUTO mode.
AUTO does not work with those algorithms that do not support automatic
synchronization.
VI.6 The ProntoNetLC operating as IP codec (Proprietary
Protocols)
The operation of the ProntoNetLC as an IP codec offers three operational modes:
UNICAST, MULTICAST and MULTIUNICAST
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VI.6.1 UNICAST communications
The term UNICAST is used in the networking world to refer to the connection to
a single destination. Applied to the ProntoNetLC, this is when a point-to-point
connection is created between two units bi-directionally.
Establishing a UNICAST connection from the ProntoNetLC
The procedure for establishing a connection is very similar to that of making an
ISDN call; we enter the call initiation menu by pressing the CALL 1 key and enter
the IP address of the unit we wish to connect to. As we have already
mentioned, the audio data connection is bi-directional (as in an ISDN codec) and
we need two connections, one in each direction. For this, the ProntoNetLC that
receives and accepts the call will automatically call back to the originating
ProntoNetLC and establish a reverse connection.
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MULTIUNICAST is available from version 5.2.1 onwards under license.