Precedence Bit Setting; Vlan Id - Polycom SoundStation IP 3000 Administration Manual

Precedence Bit Settings
Precedence bits are part of the type of
service (TOS) byte in an IP packet.
SoundStation IP 3000 will set these bits
as configured when QoS is enabled. The
TOS byte consists of TOS bits that will
always be set to a predefined value by
SoundStation IP 3000. TOS byte definition
is as follows.
7 6
P P
2 1
MSB
TOS Bit Setting
TOS bits are pre-defined by SoundStation IP 3000. The definition of these bits is shown in
the following table. When QoS is enabled TOS will be set as follows:
Bit
Meaning
1 = low
Value
0 = normal
Default
Setting

VLAN ID

VLAN ID is used to set the tagging field.
A '0' value indicates VLAN is disabled
(802.1 p/q tagging is disabled) When
VLAN ID is set to a value between 1-4095,
the tag field is set to this value.
14
5 4 3 2
P T T T
0 3 2 1
T T
3 2
Delay Throughput
1 = high
0 = normal
1 1
Precedence bits may be set to a value any-
where between 0 and 7. SoundStation IP
3000 uses a default value of 5.
The definition of these values is as follows.
P
2
0
0
1 0
0
Not
T
0
used
0
LSB
1
1
1
1
T T
1 0
Reliability Not used
1 = high
0 = normal
0 0
P P
1 0
0 0 Routine
0 1 Priority
1 0 Immediate
1 1 Flash
0 0 Flash Override
0 1 Critical
1 0 Internetwork Control (Not recommended)
1 1 Network Control (Not recommended)