Polycom SoundStructure C16 Design Manual page 52

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channel numbers of all the inputs and outputs are important because the physical channel numbers are
used to create virtual channels, as discussed in the next section.
Physical Channels Numbering when OBAM Linked
Device A
OBAM
IN
Device B
OBAM
IN
Device C
IN
OBAM
With the linking of devices as shown in the previous figure, the physical channels are ordered as expected
and shown in that figure and summarized in the following table.
Device A's inputs and outputs become the first sixteen physical inputs and sixteen outputs on the system,
device B's inputs and outputs become the next sixteen physical inputs and next sixteen physical outputs on
the system, and device C's inputs and output become the last sixteen physical inputs and sixteen physical
outputs on the system.
Local and System Input and Output Numbering for OBAM Linked SoundStructure Devices
Device
Local Numbering (input
and output)
A
1 - 16
B
1 - 16
C
1 - 16
The system built from the top-to-bottom, OBAM out-to-OBAM-in linking results in a simple way of numbering
the physical input and output connections in a simple linear sequential fashion. Conceptually, the linking of
these devices should be viewed as creating one large system from the individual systems, as shown in the
next figure.
Polycom, Inc.
PIN 2: TXD
PIN 3: RXD
PIN 5: GROUND
PIN 7: CTS
PIN 8: RTS
REMOTE CONTROL 1
RS-232
REMOTE CONTROL 2
IR
OUT
12V
PIN 2: TXD
PIN 3: RXD
PIN 5: GROUND
PIN 7: CTS
PIN 8: RTS
REMOTE CONTROL 1
RS-232
REMOTE CONTROL 2
IR
OUT
12V
PIN 2: TXD
PIN 3: RXD
PIN 5: GROUND
PIN 7: CTS
PIN 8: RTS
REMOTE CONTROL 1
RS-232
REMOTE CONTROL 2
OUT
IR
12V
System Numbering
(input and output)
1 - 16
17 - 32
33 - 48
Output Physical Channels 1 - 16
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Input Physical Channels 1 - 16
Output Physical Channels 17 - 32
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Input Physical Channels 17 - 32
Output Physical Channels 33 - 48
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Input Physical Channels 33 - 48
10
11
12
13
14
15
16
10
11
12
13
14
15
16
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SoundStructure C16
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