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Page 76 / 327 Scroll up to view Page 71 - 75
Chapter 6 Broadband
VMG3926-B10A User’s Guide
76
Username
Type the user name (of up to 64 ASCII printable characters) given to you by your service
provider.
Password
Type the password (of up to 64 ASCII printable characters) associated with the user name
above.
PIN
A PIN (Personal Identification Number) code is a key to a 3G card. Without the PIN code,
you cannot use the 3G card.
If your ISP enabled PIN code authentication, enter the 4-digit PIN code (0000 for example)
provided by your ISP. If you enter the PIN code incorrectly, the 3G card may be blocked by
your ISP and you cannot use the account to access the Internet.
If your ISP disabled PIN code authentication, leave this field blank.
Dial string
Enter the phone number (dial string) used to dial up a connection to your service provider’s
base station. Your ISP should provide the phone number.
For example, *99# is the dial string to establish a GPRS or 3G connection in Taiwan.
APN
Enter the APN (Access Point Name) provided by your service provider. Connections with
different APNs may provide different services (such as Internet access or MMS (Multi-Media
Messaging Service)) and charge method.
You can enter up to 32 ASCII printable characters. Spaces are allowed.
Connection
Select
Nailed UP
if you do not want the connection to time out.
Select
on Demand
if you do not want the connection up all the time and specify an idle
time-out in the
Max Idle Timeout
field.
Max Idle
Timeout
This value specifies the time in minutes that elapses before the VMG automatically
disconnects from the ISP.
Obtain an IP
Address
Automatically
Select this option if your ISP did not assign you a fixed IP address.
Use the
following static
IP address
Select this option if the ISP assigned a fixed IP address.
IP Address
Enter your WAN IP address in this field if you selected
Use the following static IP
address
.
Obtain DNS
info
dynamically
Select this to have the VMG get the DNS server addresses from the ISP automatically.
Use the
following static
DNS IP address
Select this to have the VMG use the DNS server addresses you configure manually.
Primary
DNS server
Enter the first DNS server address assigned by the ISP.
Secondary
DNS server
Enter the second DNS server address assigned by the ISP.
Enable Email
Notification
Select this to enable the e-mail notification function. The VMG will e-mail you a notification
when the 3G connection is up.
Mail Server
Select a mail server for the e-mail address specified below.
If you do not select a mail server, e-mail notifications cannot be sent via e-mail. You must
have configured a mail server already in the
Maintenance
>
Email Notification
screen.
3G backup
Send Email
Title
Type a title that you want to be in the subject line of the e-mail notifications that the VMG
sends.
Table 11
Network Setting
>
Broadband > 3G Backup (continued)
LABEL
DESCRIPTION
Page 77 / 327
Chapter 6 Broadband
VMG3926-B10A User’s Guide
77
Send
Notification to
Email
Notifications are sent to the e-mail address specified in this field. If this field is left blank,
notifications cannot be sent via e-mail.
Advanced
Click this to show the advanced 3G backup settings.
Budget Setup
Enable Budget
Control
Select
Enable
to set a monthly limit for the user account of the installed 3G card. You can
set a limit on the total traffic and/or call time. The VMG takes the actions you specified when
a limit is exceeded during the month.
Time Budget
Select this and specify the amount of time (in hours) that the 3G connection can be used
within one month. If you change the value after you configure and enable budget control,
the VMG resets the statistics.
Data Budget
(Mbytes)
Select this and specify how much downstream and/or upstream data (in Mega bytes) can be
transmitted via the 3G connection within one month.
Select
Download/Upload
to set a limit on the total traffic in both directions.
Select
Download
to set a limit on the downstream traffic (from the ISP to the VMG).
Select
Upload
to set a limit on the upstream traffic (from the VMG to the ISP).
If you change the value after you configure and enable budget control, the VMG resets the
statistics.
Data Budget
(kPackets)
Select this and specify how much downstream and/or upstream data (in k Packets) can be
transmitted via the 3G connection within one month.
Select
Download/Upload
to set a limit on the total traffic in both directions.
Select
Download
to set a limit on the downstream traffic (from the ISP to the VMG).
Select
Upload
to set a limit on the upstream traffic (from the VMG to the ISP).
If you change the value after you configure and enable budget control, the VMG resets the
statistics.
Reset all
budget
counters on
Select the date on which the VMG resets the budget every month. Select
last
if you want
the VMG to reset the budget on the last day of the month. Select
specific
and enter the
number of the date you want the VMG to reset the budget
Reset time and
data budget
counters
Click this button to reset the time and data budgets immediately. The count starts over with
the 3G connection’s full configured monthly time and data budgets. This does not affect the
normal monthly budget restart; so if you configured the time and data budget counters to
reset on the second day of the month and you use this button on the first, the time and data
budget counters will still reset on the second.
Actions before
over budget
Specify the actions the VMG takes before the time or data limit exceeds.
Enable % of
time budget/
data budget
(Mbytes)/data
budget
(kPackets)
Select
Enable
and enter a number from 1 to 99 in the percentage fields. If you change the
value after you configure and enable budget control, the VMG resets the statistics.
Actions when
over budget
Specify the actions the VMG takes when the time or data limit is exceeded.
Current 3G
connection
Select
Keep
to maintain an existing 3G connection or
Drop
to disconnect it.
Actions
Enable Email
Notification
Select this to enable the e-mail notification function. The VMG will e-mail you a notification
when there over budget occurs.
Table 11
Network Setting
>
Broadband > 3G Backup (continued)
LABEL
DESCRIPTION
Page 78 / 327
Chapter 6 Broadband
VMG3926-B10A User’s Guide
78
6.4
The Advanced Screen
Use the
Advanced
screen to enable or disable ADSL over PTM, Annex M, DSL PhyR, and SRA
(Seamless Rate Adaptation) functions. The VMG supports the PhyR retransmission scheme. PhyR is
a retransmission scheme designed to provide protection against noise on the DSL line. It improves
voice, video and data transmission resilience by utilizing a retransmission buffer.
ITU-T G.993.2 standard defines a wide range of settings for various parameters, some of which are
encompassed in profiles as shown in the next table.
Click
Network Setting
>
Broadband
>
Advanced
to display the following screen.
Mail Server
Select a mail server for the e-mail address specified below.
If you do not select a mail server, e-mail notifications cannot be sent via e-mail. You must
have configured a mail server already in the
Maintenance
>
Email Notification
screen.
Over Budget
Email Title
Type a title that you want to be in the subject line of the e-mail notifications that the VMG
sends.
Send
Notification to
Email
Notifications are sent to the e-mail address specified in this field. If this field is left blank,
notifications cannot be sent via e-mail.
Interval
Enter the interval of how many minutes you want the VMG to e-mail you.
Enable Log
Select this to activate the logging function at the interval you set in this field.
Basic
Click this to hide the advanced settings of 3G backup.
Apply
Click
Apply
to save your changes back to the VMG.
Cancel
Click
Cancel
to return to the previous configuration.
Table 11
Network Setting
>
Broadband > 3G Backup (continued)
LABEL
DESCRIPTION
Table 12
VDSL Profiles
PROFILE
BANDWIDTH
(MHZ)
NUMBER OF
DOWNSTREAM
CARRIERS
CARRIER
BANDWIDTH
(KHZ)
POWER (DBM)
MAX.
DOWNSTREAM
THROUGHPUT
(MBIT/S)
8a
8.832
2048
4.3125
17.5
50
8b
8.832
2048
4.3125
20.5
50
8c
8.5
1972
4.3125
11.5
50
8d
8.832
2048
4.3125
14.5
50
12a
12
2783
4.3125
14.5
68
12b
12
2783
4.3125
14.5
68
17a
17.664
4096
4.3125
14.5
100
30a
30
3479
8.625
14.5
200
Page 79 / 327
Chapter 6 Broadband
VMG3926-B10A User’s Guide
79
Figure 26
Network Setting
>
Broadband > Advanced
The following table describes the labels in this screen.
Table 13
Network Setting
>
Broadband > Advanced
LABEL
DESCRIPTION
PhyR US
Enable or disable
PhyR US
(upstream) for upstream transmission to the WAN. PhyR US
should be enabled if data being transmitted upstream is sensitive to noise. However,
enabling PhyR US can decrease the US line rate. Enabling or disabling PhyR will require the
CPE to retrain. For PhyR to function, the DSLAM must also support PhyR and have it
enabled.
PhyR DS
Enable or disable
PhyR DS
(downstream) for downstream transmission from the WAN.
PhyR DS should be enabled if data being transmitted downstream is sensitive to noise.
However, enabling PhyR DS can decrease the DS line rate. Enabling or disabling PhyR will
require the CPE to retrain. For PhyR to function, the DSLAM must also support PhyR and
have it enabled.
Bitswap
SRA
Enable or disable Seamless Rate Adaption (SRA). Select
Enable
to have the VMG
automatically adjust the connection’s data rate according to line conditions without
interrupting service.
ADSL
Modulation
PTM over
ADSL:
Select
Enable
to use PTM over ADSL. Since PTM has less overhead than ATM, some ISPs
use this for better performance.
G.Dmt:
ITU G.992.1 (better known as G.dmt) is an ITU standard for ADSL using discrete multitone
modulation. G.dmt full-rate ADSL expands the usable bandwidth of existing copper
telephone lines, delivering high-speed data communications at rates up to 8 Mbit/s
downstream and 1.3 Mbit/s upstream.
G.lite :
ITU G.992.2 (better known as G.lite) is an ITU standard for ADSL using discrete multitone
modulation. G.lite does not strictly require the use of DSL filters, but like all variants of
ADSL generally functions better with splitters.
Page 80 / 327
Chapter 6 Broadband
VMG3926-B10A User’s Guide
80
6.5
The 802.1x Screen
You can view and configure the 802.1X authentication settings in the
802.1x
screen. Click
Network Setting
>
Broadband
>
802.1x
to display the following screen.
Figure 27
Network Setting > Broadband > 802.1x
T1.413 :
ANSI T1.413 is a technical standard that defines the requirements for the single asymmetric
digital subscriber line (ADSL) for the interface between the telecommunications network and
the customer installation in terms of their interaction and electrical characteristics.
ADSL2 :
It optionally extends the capability of basic ADSL in data rates to 12 Mbit/s downstream
and, depending on Annex version, up to 3.5 Mbit/s upstream (with a mandatory capability
of ADSL2 transceivers of 8 Mbit/s downstream and 800 kbit/s upstream).
AnnexL :
Annex L is an optional specification in the ITU-T ADSL2 recommendation G.992.3 titled
Specific requirements for a Reach Extended ADSL2 (READSL2) system operating in the
frequency band above POTS, therefore it is often referred to as Reach Extended ADSL2 or
READSL2.The main difference between this specification and commonly deployed Annex A is
the maximum distance that can be used. The power of the lower frequencies used for
transmitting data is boosted up to increase the reach of this signal up to 7 kilometers
(23,000 ft).
ADSL2+ :
ADSL2+ extends the capability of basic ADSL by doubling the number of downstream
channels. The data rates can be as high as 24 Mbit/s downstream and up to 1.4 Mbit/s
upstream depending on the distance from the DSLAM to the customer's premises.
AnnexM :
Annex M is an optional specification in ITU-T recommendations G.992.3 (ADSL2) and
G.992.5 (ADSL2+), also referred to as ADSL2 M and ADSL2+ M. This specification extends
the capability of commonly deployed Annex A by more than doubling the number of
upstream bits. The data rates can be as high as 12 or 24 Mbit/s downstream and 3 Mbit/s
upstream depending on the distance from the DSLAM to the customer's premises.
VDSL Profile
VDSL2 profiles differ in the width of the frequency band used to transmit the broadband
signal. Profiles that use a wider frequency band can deliver higher maximum speeds.
8a, 8b, 8c, 8d,
12a, 12b, 17a,
US0
The G.993.2 VDSL standard defines a wide range of profiles that can be used in different
VDSL deployment settings, such as in a central office, a street cabinet or a building.
The VMG must comply with at least one profile specified in G.993.2. but compliance with
more than one profile is allowed.
Apply
Click
Apply
to save your changes back to the VMG.
Cancel
Click
Cancel
to return to the previous configuration.
Table 13
Network Setting
>
Broadband > Advanced (continued)
LABEL
DESCRIPTION

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