PortaNet User Manual
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PortaNet Blocks
Knowing the different parts that comprise the PortaNet will help the user
understand the various operational modes. The following chapter describes the
different elements and their relationships.
These sections are arranged in two different groups: Communications and audio.
X.1
Communications
There are two different communication interfaces: ISDN and IP.
PortaNet can establish connections both via ISDN and IP networks. The
procedure is very similar and can be carried out from the web page or the main
menu. Basically, PortaNet operation modes are almost the same for both
interfaces with the difference being the available bandwidth, which will place
some limitations on the compression mode, and also on the encoder/decoder in
line 2 over IP, which cannot be changed and will work in G722 mode.
There are two different independent communication channels
Both over ISDN and IP, it is possible to establish two independent
communications. Thus, one of the connections will carry the program audio, and
the second one will hold the coordination channel. The first line (line 1) is called
program line, and the second one (line 2) TalkBack line:
LINE 1
PROGRAM CHANNEL
:
Tx channel =
PROGRAM Tx
Rx channel =
CUE
LINE 2
COORDINATION (TALKBACK)
:
Tx channel =
TALKBACK Tx
Rx channel =
TALKBACK Rx