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Prodys IP Family codec operating as an ISDN codec
The Prodys IP Family codec as ISDN codec is very similar to the Pronto 3,
therefore those users that are familiar with the Pronto 3 will find it easy to
operate the Prodys IP Family codec over ISDN.
The most important points that a user must have in mind for this mode are as
follows:
1.
ISDN interface:
The ISDN interface of the Prodys IP Family codec
allows connection to a basic rate ISDN line. This interface allows the
user two bi-directional channels with a bandwidth of 64 Kbps in each
direction. There is an additional channel of 16 Kbps that is used for
signalling. This is why a basic rate connection is sometimes
represented as 2B+D. The Prodys IP Family codec identifies each B
channel as Line 1 and Line 2 respectively.
2.
Dual Codec:
The Prodys IP Family codec can operate as “DUAL
CODEC”, which means it can establish two totally independent
communications via each B channel at 64 Kbps. This is only possible
when each B channel or communication line uses a MONO mode
compression algorithm in this situation the Prodys IP Family codec will
be able to use two Encoders and two Decoders independently. This
limitation is imposed by the fact that there is only one stereo audio
input and one stereo audio output.
Содержание IP Family
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