NetComm NB5540 Router Manual PDF (Setup & Configuration Guide)

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YML754 Rev1

NB5Plus4/W User Guide

www.netcomm.com.au

²1

Option

Description

O° Dema°d:

If enabled the Idle Timeout ﬁeld can be

modiﬁed. On Demand speciﬁes that the

modem will connect to the Internet on

demand.

Default Gateway:

Speciﬁes that this connection will be the

default gateway for other LAN groups to

access the Internet.

E°force MTU:

Speciﬁes that the MTU setting will be

enforced.

Debu±:

Enable to turn on the debugging mode

of your modem. Your ISP may ask you

to do this should you be experiencing

problems connecting to the Internet.

PPP U°°umbered:

An unnumbered interface does not have

an IP address assigned to it. An unnum-

bered interface is often used in point-to-

point connections where an IP address

is not required. You’ll notice that once

PPP Unnumbered is enabled you need

to choose the LAN group to which this

applies.

Page 32 / 112

NB5Plus4/W User Guide

YML754Rev1

²±

www.netcomm.com.au

PVC (Private Virtual Circuit) Settings

Option

Description

VPI:

(Virtual Path Identiﬁer)

If instructed

to change this, type in the VPI value

for the initial connection (using PVC 0).

Default = 0.

VCI:

(Virtual Channel Identiﬁer)

If instructed

to change this, type in the VCI value

for the initial connection (using PVC 0).

Default = 0.

Your modem can support up to 8 PVCs.

For example, you could have one PVC

(8/35) for your Internet trafﬁc, and

another PVC (9/35) for your VoIP trafﬁc.

Contact your ISP for further details.

QoS:

Default is UBR (Unspeciﬁed Bit Rate).

Change this setting if your ISP instructs

you to do so. The other settings are CBR

(Constant Bit Rate) and VBR (Variable

Bit Rate).

PCR:

Divide the DSL line rate (bps) by 424

(the size of an ATM cell) to ﬁnd the Peak

Cell Rate (PCR). This is the maximum

rate at which the sender can send cells.

SCR:

The Sustain Cell Rate (SCR) sets the

average cell rate (long-term) that can

be transmitted.

MBS:

Maximum Burst Rate. Represents the

maximum number of cells accepted

over a period of time. When the cell rate

exceeds the MBS cells can be dropped.

CDVT:

Cell Delay Variation Tolerance. If your

PVC is a CBR service you need to set

the PCR and CDVT parameters. Ask your

ISP what the best settings are for these

on their network.

Auto PVC:

If enabled your modem will automatical-

ly detect your PVC (VPI/VCI) settings.

Co°°ect /

Disco°°ect Butto°s:

Click Connect button to attempt to con-

nect using the settings you have speci-

ﬁed. Click Disconnect button to discon

-

nect the current proﬁle.

Apply:

Click Apply to save the changes.

Page 33 / 112

YML754 Rev1

NB5Plus4/W User Guide

www.netcomm.com.au

²²

PPPoA Connection Setup

When specifying your connection Type to be PPPoA you are able to change the En-

capsulation to either LLC (Logical Link Control) or VC (Virtual Circuit) encapsulation.

The default is LLC so do not change this setting unless your ISP instructs you to do

so.

Page 34 / 112

NB5Plus4/W User Guide

YML754Rev1

²4

www.netcomm.com.au

Static Connection Setup

Option

Description

E°capsulatio°:

Select the method of encapsulation used

by your ISP.

The default is LLC, so only

change this to VC if your ISP asks you

to.

IP Address:

If your ISP has issued you with a static

public IP address, you need to specify it

here. (e.g. 210.1.123.123).

Mask:

The subnet mask speciﬁed by your ISP.

Default Gateway:

The default gateway speciﬁed by your

ISP.

DNS:

You have the choice to specify up to

three DNS (Domain Name Service)

servers. The function of a DNS server

is to map URL names (e.g. www.

google.com.au) to their IP addresses

(e.g.66.102.7.147). If DNS 1 is down,

your modem will use DNS 2.

Mode:

Bridged and Routed

Page 35 / 112

YML754 Rev1

NB5Plus4/W User Guide

www.netcomm.com.au

²5

DHCP Connection Setup

Option

Description

E°capsulatio°:

Select the method of encapsulation

used by your ISP from the drop-down

list box. Choices vary depending on the

mode you select in the Mode ﬁeld.

IP Address:

The IP address assigned by an external

DHCP server.

Mask:

The subnet mask assigned by an exter-

nal DHCP server.

Gateway:

The gateway assigned by your DHCP

server.

Default Gateway:

Enable this if you want to use this pro-

ﬁle connection as the default gateway

for clients to connect to the Internet.

Bridge Settings

E°capsulatio°:

Select the method of encapsulation

used by your ISP from the drop-down

list box. Choices vary depending on the

mode you select in the Mode ﬁeld.

Select LAN:

Select the LAN group to which you want

to bridge this connection to. Having a

Bridged Connection places the modem

into a ‘dumb’ mode. The modem con-

nects to the ISP, but does not perform

authentication, routing or ﬁrewalling

functions. You will need to have an addi-

tional router plugged into a LAN port of

your modem to perform these functions.

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