Sitecom ADSL2+ Modem DC-227

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required if the source port or destination port has been entered.

Source Port

The source port of the selected protocol. You cannot configure this field

without entering the protocol first.

Destination Port

The destination port of the selected protocol. You cannot configure this

field without entering the protocol first.

Physical Port

The incoming ports. The selections include LAN ports, wireless port, and

the blank for not applicable.

Field

Description

Outbound Priority

The priority level for the traffic that matches this classification rule. The

possible selections are (in the descending priority): p0, p1, p2, p3.

IP Precedence

Select this field to mark the IP precedence bits in the packet that match

this classification rule.

IP Type of Service

Select this field to mark the IP TOS bits in the packet that match this

classification rule.

802.1p

Select this field to mark the 3-bit user-priority field in the 802.1p

header of the packet that match this classification rule. Note that this

802.1p marking is workable on a given PVC channel only if the VLAN tag

is enabled in this PVC channel.

Please check

www.sitecom.com

for up to date drivers & utilities, manuals and support

47

8.5 Misc

On this page, you can change IP passthrough settings.

When the

IP Passthrough

option is enabled, only one PC is able to access

the Internet, and the DHCP server will duplicate the WAN IP address from the ISP to the

local client PC. Only the PC with the WAN IP address can access the Internet. This option is

sometimes also called “PPP Half-Bridge”.

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8.6 ADSL Set

The ADSL setting page allows you to select any combination of DSL training

modes.

Field

Description

ADSL modulation

Choose prefered xdsl standard protocols.

G.lite : G.992.2 Annex A

G.dmt : G.992.1 Annex A

T1.413 : T1.413 issue #2

ADSL2 : G.992.3 Annex A

ADSL2+ : G.992.5 Annex A

AnnexL Option

Enable/Disable ADSL2/ADSL2+ Annex L capability.

AnnexM Option

Enable/Disable ADSL2/ADSL2+ Annex M capability.

ADSL Capability

“Bitswap Enable” : Enable/Disable bitswap capability.

“SRA Enable” : Enable/Disable SRA (seamless rate adaptation)

capability.

Tone Mask

Please check

www.sitecom.com

for up to date drivers & utilities, manuals and support

49

Choose tones to be masked. Mased tones will not carry any data.

Apply Changes

Click to save the setting to the configuration and the modem will be retrained.

Sitecom ADSL2+ Modem DC-227

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8.7 ADSL ATM

The page is for ATM PVC QoS parameters setting. The DSL device support 4 QoS

mode —CBR/rt-VBR/nrt-VBR/UBR.

Field

Description

VPI

Virtual Path Identifier. This is read-only field and is selected on the

Select

column in the Current ATM VC Table.

VCI

Virtual Channel Identifier. This is read-only field and is selected on the

Select

column in the Current ATM VC Table. The VCI, together with VPI,

is used to identify the next destination of a cell as it passes through to

the ATM switch.

QoS

Quality of Server, a characteristic of data transmission that measures

how accurately and how quickly a message or data is transferred from a

source host to a destination host over a network. The four QoS options

are:

-

UBR (Unspecified Bit Rate): When UBR is selected, the

SCR and MBS fields are disabled.

-

CBR (Constant Bit Rate): When CBR is selected, the SCR

and MBS fields are disabled.