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2.5.5
QoS settings
SVP305 IP phone implement QoS based on 802.1p, The QoS is used to mark the network
communication priority in the data link/MAC sub-layer. SVP305 will sorted the packets using
the QoS and sends it to the destination.
VLAN Enable:
If enable the VLAN service, the second layer will realize separate voice,
signal and data transmission. To realize separate voice and data transmission by dispose for
IP precedence of ToS area of voice transmission. To reach upper layer switch or router have
priority to transfer voice transmission. (The prerequisite is the upper layer switch or router
have to identify ToS area.)
VLAN ID:
Dispose VLAN ID is add a Tag header after realize enable the VLAN function. The
realized voice packets transfer at the same VLAN. The prerequisite is it must the same as
VLAN of upper switch. The value range are 1~4094.
DiffServ Enable:
If enable the VLAN service, it indicates use DSCP mode to realize three
layers QoS. This moment, the DSCP of SIP signals which between IP Phone and MGC. It will
use Class Selector 5 (The value is 0xA0). And the DSCP of mediums information (In RTP
packets) would be used the values of DiffServ Value field.
DiffServ Value:
The value range
0x28,0x30,0x38,0x48,0x50,0x58,0x68,0x70,0x78,0x88,0x90,0x98,0xb8.default is 0xb8 ,oxb8
stands for best fast transmission; 28-30 is guarantee for the transmission priority for the 1st
rank , 48-58 is guarantee for the transmission priority for the 2nd rank, 68-78 is guarantee for
the transmission priority for the 3rd rank, 88-98 is guarantee for the transmission priority for
the 4th rank.
