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51
-
nrt-VBR (non-real-time Variable Bit Rate): When nrt-VBR
is selected, the SCR and MBS fields are enabled.
-
rt-VBR (real-time Variable Bit Rate): When rt-VBR is
selected, the SCR and MBS fields are enabled.
PCR
Peak Cell Rate, measured in cells/sec., is the cell rate which the source
may never exceed.
SCR
Sustained Cell Rate, measured in cells/sec., is the average cell rate over
the duration of the connection.
MBS
Maximum Burst Size, a traffic parameter that specifies the maximum
number of cells that can be transmitted at the peak cell rate.
Apply Changes
Set new PVC OoS mode for the selected PVC. New parameters will take effect after save
into flash memory and reboot the system.
Undo
Discard your settings.
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Sitecom ADSL2+ Modem DC-227
52
9 Toolbox
The first time you log into the system, you use the default password. There are two-level
logins:
admin
and
user
. The
admin
and
user
password configuration allows you to change
the password for administrator and user.
Field
Description
User Name
Selection of user levels are: admin and user.
Old Password
Enter the old password for this selected login.
New Password
Enter the new password here.
Confirmed Password Enter the new password here again to confirm.
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53
9.1 Timezone
Simple Network Timing Protocol (SNTP) is a protocol used to synchronize the system time to
the public SNTP servers. The DSL device supports SNTP client functionality in compliance
with IETF RFC2030. SNTP client functioning in daemon mode which issues sending client
requests to the configured SNTP server addresses periodically can configure the system clock
in the DSL device.
Field
Description
Current Time
The current time of the specified time zone. You can set the current time
by yourself or configured by SNTP.
Time Zone Select
The time zone in which the DSL device resides.
Enable SNTP client
update
Enable the SNTP client to update the system clock.
SNTP server
The IP address or the host name of the SNTP server. You can select from
the list or set it manually.
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Sitecom ADSL2+ Modem DC-227
54
9.2 ACL
The Access Control List (ACL) is a list of permissions attached to the DSL device. The list
specifies who is allowed to access this device. If ACL is enabled, all hosts cannot access this
device except for the hosts with IP address in the ACL table.
Field
Description
ACL Capability
Enable/disable the ACL function
Enable
Check to enable this ACL entry
Interface
Select the interface domain: LAN or WAN
IP Address
Enter the IP address that allow access to this device.
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55
9.3 Firmware Upgrade
This page allows you to upgrade the modem’s firmware.
To upgrade the firmware for the DSL device:
-
Click the
Browse
button to select the firmware file.
-
Confirm your selection.
-
Click the
Upload
button to start upgrading.
IMPORTANT!
Do not turn off your DSL device or press the Reset button while this procedure
is in progress.
IMPORTANT!
Make sure you use a wired client to upgrade the firmwqare from. Disable your
wireless network card to prevent possible damage due to incomplete upgrading.
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