MicroNet SP3501C User manual

User’s Manual
VDSL2 CO/CPE Modem
Model: SP3501C

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Table of contents
1. Introduction........................................................................................................1
1.1 Package Contents..................................................................................... 1
1.2 Features.................................................................................................... 1
2. Installation..........................................................................................................2
2.1 Hardware Installation ................................................................................ 2
2.2 Pre-installation Requirements................................................................... 2
2.3 General Rules........................................................................................... 2
2.4 Connecting the VDSL2 Modem................................................................. 3
3. Hardware Description........................................................................................5
3.1 Front Panel ............................................................................................... 5
3.2 Front Indicators......................................................................................... 5
3.3 Rear Panel................................................................................................ 6
3.4 DIP switch................................................................................................. 7
Appendix A: Cable Requirements......................................................................11
Appendix B: Product Specification....................................................................13
Appendix C: Troubleshooting ............................................................................14
Appendix D : Compliance and Safety Information ...........................................17

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1. Introduction
Micronet introduces the next-generation broadband access solution, with the newest
VDSL2 technology, to carriers and MxU (Multi-Dwelling/Multi-Tenant Units)
environments that need for new services such as IPTV, video conferencing, VoIP,
peer-to-peer file sharing, and interactive gaming. Micronet SP3501C VDSL2 CO /
CPE Modem are fully compliant with ITU-T G.993.2 VDSL2 standard also supports
both central office (CO) and customer-premises equipment (CPE) modes selectable
through DIP Switch that is able to provide the newest broadband solution with
ADSL-like long-reach performance and high-speed symmetrical bandwidth up to
100Mbps.
1.1 Package Contents
Carefully unpack the package and check its contents against the checklist.
VDSL2 Modem
SP3501C VDSL2 Modem
Quick Installation Guide
Manual CD
RJ-45 Cable
Power Adapter
Rubber Feet x 4
Note
1, Please inform your dealer immediately for any missing, or damaged
parts. If possible, retain the carton, including the original packing
materials. Use them to repack the unit in case there is a need to return for
repair.
2. Do not use sub-standard power supply. Before connecting the power
supply to the device, be sure to check compliance with specifications.
The VDSL2 Modem of the power supply at least use DC12V/1A.
3. Power supply included in package is commercial-grade. Do not use in
industrial-grade applications.
4. If you would like to use the telephone, please purchase a suitable
external splitter and install to the line port.
1.2 Features
Supports RJ-11/Terminal Block combo for Line port.
Supports high bandwidth up to 100Mbps symmetric over Line ports
Support long reach mode up to 3 km with 24 gauge phone wire

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Support auto speed for Line port and Interleave mode selectable through CO
side DIP switch
DIP switch with CO and CPE mode selectable
Supports long packet size up to 1536 bytes
Supports Surge protection
Supports wall mounting
Mini size and metal case design
Supports point-to-point applications
2. Installation
2.1 Hardware Installation
This chapter describes how to install the VDSL2 Modem and establishes
network connections. You may install the VDSL2 Modem on any level
surface (e.g, a table or shelf). However, please take note of the following
minimum site requirements before you begin.
2.2 Pre-installation Requirements
Before you start actual hardware installation, make sure you can provide
the right operating environment, including power requirements, sufficient
physical space, and proximity to other network devices that are to be
connected. Verify the following installation requirement:
Power requirements: DC12V/1A or above.
The VDSL2 Modem should be located in a cool dry place, with at
least 10cm/4in of space at the front and back for ventilation.
Place the VDSL2 Modem out of direct sunlight, and away from
heat sources or areas with a high amount of electromagnetic
interference.
Check if network cables and connectors needed for installation
are available
Do Not install phone lines strapped together withAC power lines,
or telephone office line with voice signal.
Avoid installing this device with radio amplifying station nearby or
transformer station nearby.
2.3 General Rules
Before making any connections to the VDSL2 Modem, note the following rules:
Ethernet Port (RJ-45)
All network connections to the Modem Ethernet port must be made
using Category 5 UTP for 100Mbps;

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Category 3, 4 UTP for 10Mbps
No more than 100 meters of cabling may be use between the MUX or
HUB and an end node.
Phone Port (RJ-11)
All Phone set connections to the RJ-11 Port made using 24~26
Gauge phone wiring. We do not recommend the use of the
telephone line 28 gauge or above.
2.4 Connecting the VDSL2 Modem
The VDSL2 Modem has two Ethernet ports which support connection to
Ethernet operation. The devices attached to these ports must support
auto-negotiation or 10Base-T OR 100Base-TX unless they will always
operate at half duplex. Use any of the Ethernet ports to connect to devices
such as Monitor system, Server, Switch, modem or router.
2 Ethernet RJ45 jacks (Slave device(CPE) must connect Master
device(CO) through the telephone wire. Slave cannot connect
to Slave, and Master cannot connect to Master. Please confirm
the DIP switch status before the link established), therefore
straight Ethernet cables can be used.
1 x RJ11 jack (The RJ11 Line port is used to connect to
telephone that is connected to VDSL CO and CPE modem
(Point-to-point solution)
Figure 2.1 VDSL2 Point to Point applications
Step 1. RJ-11 connection
The line port has 2 connectors: Either RJ-11 port is connected or terminal block is
connected using straight connection (Figure 2.4) or cross-over connection(Figure 2.5)
When inserting a RJ-11 plug, make sure the tab on the plug clicks into position to
ensure that it is properly seated.

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Do not plug a RJ-11 phone jack connector into the Ethernet port (RJ-45 port). This
may damage the modem. Instead, use only twisted-pair cables with RJ-45 connectors
that conform to Ethernet standard.
Step 2. RJ-45 connection
The Modem provides 2 Ethernet port, which support connection through Ethernet
operation.
It is used to connect from VDSL2 Modem (CO) using single pair phone cable to
VDSL2 Modem (CPE) modem side (point to point solution). Take note that VDSL2
Modem line port cannot be used at the same time.
Step 3. Power connection
Use the included power adaptor (DC 12V/1A) to connect the Modem power socket to
an appropriate power source.
Notes:
1. Be sure each twisted-pair cable (RJ-45 ethernet cable) does not exceed
100 meters (333 feet).
2. We advise using Category 5~7 UTP/STP cables for Cable bridge or
Bridge connections to avoid any confusion or inconvenience in the future
when you attached to high bandwidth devices.
3. RJ-11(VDSL2 Line port) use 24 ~ 26 gauge with twisted pair phone wiring,
we do not recommend 28 gauge or above.
4. Be sure phone wire has been installed before VDSL2 Modem powered
on.

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3. Hardware Description
This section describes the important parts of the VDSL2 Modem. It
features the front indicators and rear connectors.
3.1 Front Panel
The following figure shows the front panel.
Figure 3.1 Front Panel
Tip:
At a quick glance of the front panel, it is easy to determine if it has Ethernet signal
from its RJ-45 port and if there is vdsl line signal on RJ-11 port.
And the table shows the description. (Table 3-1)
Table 3-1 Description of the modem front connectors
Connectors
Type
Description
LAN1 / LAN2
RJ-45
For connecting to a Ethernet equipped device.
Line
RJ-11/Terminal Block
For connecting to VDSL2 modem. (Do not use RJ11 and Terminal
Block at the same time.)
3.2 Front Indicators
The following table describes the LEDs.
LED
Color
Status
Descriptions
PWR
(Power LED)
Green
On(Steady)
Lights to indicate that the VDSL2 modem had power
Off
The device is not ready or has malfunctioned.
LAN 1-2
(Ethernet LED)
Green
On(Steady)
The device has a good Ethernet connection.
Blinking
The device is sending or receiving data.
Off
The LAN is not connected.

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CO (Local Side)
(CO LED)
Green
On(Steady)
Indicate the VDSL2 modem is running at CO(Master)
mode.
CPE (Remote Side)
(CPE LED)
Green
On(Steady)
Indicate the VDSL2 modem is running at CPE(Slave)
mode.
LINE
(VDSL LINK LED)
Green
On(Steady)
The Internet or network connection is up.
Blinking slowly
The CO device is auto-detecting CPE device.
Blinking fastly
1. The CO device has detected a CPE device and
ready to connect.
2. The device is sending or receiving data.
Off
The Internet or network connection is down or has
malfunctioned.
Note:
Two Modems connection may take within 3 minutes is normal, due to VDSL2
Modem to establish a link mechanism is auto-negotiation, with detects
and calculate CO and CPE both PBO and PSD level as well as noise
level ....and other argument etc. for getting a better connection.
3.3 Rear Panel
The following figure shows the rear connectors
VDSL2 Modem Rear Connectors
Connectors
Type
Description
Power
DC Power Jack
External Power Adapter: Input: AC 85~240Volts/50~60Hz
Output: DC 12V/1A
DIP Switch
4 Pins DIP Switch
Provide 4 selectable transmission modes.
Ground
Ground lug
Please connect the ground lug to the earth. To prevent a
electric shock when user touches.

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3.4 DIP switch
The following figure shows the DIP switch connection. By switching the transmission
modes, you can obtain a best transmission mode to suit with phone line quality or
distance or connectivity.
DIP switch setting
The following is table of DIP Switch configuration. (Table 3-4)
Table 3-4 DIP Switch Configuration
Note:
1,The DIP switch default value are OFF.
2, Please power off VDSL2 Modem, before making any transmission mode
configuration.
PIN1:
ON: CO(Central Office) Mode or called Local Side, usually the CO device will be
located at the data enter of enterprise to link to the backbone.
OFF: CPE(Customer Premises Equipment) Mode or called Remote Side, usually the
CPE side will be located at building,
monitoring for car parks and train station as the long reach data receiver.
Tip:
When the VDSL2 Modem operates at CPE mode, the DIP switch 2, 3, 4 has
no function.
PIN2:
ON: High Band mode(500KHz to 30MHz), and enable VDSL2 spectrum is 500kHz to
30MHz. It can pass through ISDN spectrum(0 ~ 499KHz are empty).
OFF: Low Band Mode(25KHz to 30MHz), the VDSL2 Modem will auto-detect the
cable length and auto choice speed mode. VDSL2 spectrum is 25KHz to 30MHz.
PIN3:

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When SNR margin is selected, the system provide 6db/9db SNR margin for across all
usable loop length. Please note that the 6db SNR margin is for telecom standard.
Generally speaking, the higher SNR value gets better line quality, but lower
performance.
PIN4:
ON: Interleaved mode has a maximum end to end latency of 8m sec and INP=2.
When field environment has heavy noise, in order to obtain high link quality, user can
configure pin4 to “ON”, but this function will reduce performance.
OFF: Interleaved mode provides impulse noise protection for any impulse noise with a
duration less than 1ms.
TIP(Reference Only):
Interleave delay function is used in digital data transmission technology to protect the
transmission against noise issue
and data error.
If during transit more than a certain amount of data has been lost then the data cannot
be correctly decoded. Short bursts
of noise on the line can cause these data packets to become corrupt and the modem
has to re-request data which in turn
can slow down the overall rate at which data is transmitted.
Interleaving is a method of taking data packets, chopping them up into smaller bits
and then rearranging them so that
once contiguous data is now spaced further apart into a non continuous stream. Data
packets are re-assembled by your
modem.
The diagram below is an example of how interleaved traffic is transmitted.
If your line is particularly susceptible to bursts of noise then interleaving should
improve your VDSL2 experience simply
because if you lose a whole batch of data then this could cause your modem to loose
sync with the exchange.
Using Interleaving, the modem is able to re-assemble the data or if necessary just
re-request the part of the data that it is
unable to recover. By increasing the interleave depth of each ports that are
susceptible to noise, this will improve error
performance and stability of marginal lines.