Avaya 4600 Series Benutzerhandbuch
4600 Series IP Telephone LAN Administrator’s Guide
QoS
4-20
#GETAPP
IF $MODEL4 SEQ 4630D01A GOTO SCREENSETS
IF $MODEL4 SEQ 4624D01A GOTO BIGSETS
IF $MODEL4 SEQ 4612D01A GOTO BIGSETS
IF $MODEL4 SEQ 4606D01A GOTO SMALLSETS
IF $MODEL4 SEQ 4630D01A GOTO SCREENSETS
IF $MODEL4 SEQ 4624D01A GOTO BIGSETS
IF $MODEL4 SEQ 4612D01A GOTO BIGSETS
IF $MODEL4 SEQ 4606D01A GOTO SMALLSETS
#SCREENSETS
SET APPNAME 4630_000301.BIN
GOTO END
SET APPNAME 4630_000301.BIN
GOTO END
#BIGSETS
SET APPNAME 4624_000301.BIN
GOTO END
SET APPNAME 4624_000301.BIN
GOTO END
#SMALLSETS
SET APPNAME 4606_000301.BIN
SET APPNAME 4606_000301.BIN
#END
GET 46XXSETTINGS.SCR
GET 46XXSETTINGS.SCR
QoS
4
The 4600 Series IP Telephones support both IEEE 802.1D/Q and DiffServ, and may in the future
support other, possibly proprietary, procedures for implementing Quality of Service. In addition,
other network-based QoS initiatives such as UDP port selection do not require support by the
telephones, but nonetheless can contribute to improved QoS for the entire network.
support other, possibly proprietary, procedures for implementing Quality of Service. In addition,
other network-based QoS initiatives such as UDP port selection do not require support by the
telephones, but nonetheless can contribute to improved QoS for the entire network.
IEEE 802.1D and 802.1Q
4
IEEE’s 802.1Q standard defines a tag that can be added to voice and data packets. Most of the
information associated with this tag deals with Virtual LAN (VLAN) management, but 3 bits are
reserved for identifying packet priority. These 3 bits allow any one of 8 priorities to be assigned to a
specific packet. As defined in the standard, the 8 priorities are, from highest to lowest:
information associated with this tag deals with Virtual LAN (VLAN) management, but 3 bits are
reserved for identifying packet priority. These 3 bits allow any one of 8 priorities to be assigned to a
specific packet. As defined in the standard, the 8 priorities are, from highest to lowest:
■
7: Network management traffic
■
6: Voice traffic with less than 10ms latency
■
5: Voice traffic with less than 100ms latency
■
4: “Controlled-load” traffic (mission-critical data applications)
■
3: Traffic meriting “extra-effort” by the network for prompt delivery (for example, executives’
e-mail)
■
2: Reserved for future use
■
0: Traffic meriting the network’s “best-effort” for prompt delivery (the default priority)