outdoor wireless bridge @17ghz w4link - servicenet · • indoor unit or idu: gigabit power over...

Outdoor Wireless Bridge @17Ghz W4LINK

USER MANUAL

Family of products WI4LINK

June 6 2013 User manual, Ver 1, Rev 1,

Status: complete WI4LINK user’s manual

of 28

Outdoor Wireless Bridge @17GHz WI4LINK

INDEX

1. DOCUMENT REVISIONS ......................................................................................................... 3 1.1. Approved by ........................................................................................................................... 3 1.2. Revisions ................................................................................................................................ 3 1.3. Referral documents ................................................................................................................. 3 1.4. Definitions, acronyms .............................................................................................................. 3 1.5. Versions ................................................................................................................................. 3

2. PREFACE ................................................................................................................................. 4 2.1. Conformity to ROHS directives ................................................................................................. 4 2.2. Limitations of use: ministerial regulations ................................................................................. 4 2.3. Warranty ................................................................................................................................ 4 2.4. Warnings ................................................................................................................................ 5

3. “WI4LINK” DESCRIPTION ..................................................................................................... 6 3.1. Purpose of use specified by the manufacturer. .......................................................................... 6 3.2. Composition ............................................................................................................................ 6 3.3. IDU and ODU units: ................................................................................................................ 7 3.4. WI4LINK datasheet ................................................................................................................. 8

4. INSTALLATION ....................................................................................................................... 9 4.1. Mounting and connections. ...................................................................................................... 9 4.2. Antenna pointing. .................................................................................................................. 12 4.3. Configuration of WI4LINK ...................................................................................................... 14

4.3.1. Setting the transmission power ...................................................................................... 15 INFORMATION FOR USERS OF DOMESTIC AND PROFESSIONAL EQUIPMENT ...................................... 25

5. Annex A: WARRANTY ........................................................................................................... 26



of 28


1. DOCUMENT REVISIONS

1.1. Approved by

Approved by Role Date

Dott. Andrea Grittini Technical manager, WI4Net division, Totalconn June 11 febbraio 2014

1.2. Revisions

Stato Rev. Autore Descrizione Data

1 0 Enrico Betti Final draft May 12 2013

1.3. Referral documents

1.4. Definitions, acronyms

W4LINK Digital point to point relay system (bridge/Router) - 17,1-17,3GHz

1.5. Versions

Part No. Description Frequency

WI4LINKG Digital point to point relay system (bridge/router) - 17,1-17,3GHz with parabolic antenna , ETH Gbit ports

17.1-17.3GHz

WI4LINKF Digital point to point relay system (bridge/router) - 17,1-17,3GHz with parabolic antenna , Fiber port

17.1-17.3GHz

Ref. Author Title Revision

1 Andrea Grittini DoC WI4LINK 0



of 28


2. PREFACE

This manual aims to provide the necessary information to the technician for safety installation and

testing of the WI4LINK, as well as its subsequent and periodic maintenance. The complete documentation for this product includes the following documents: declaration of

conformity, test reports, individual patterns of the project (construction and electrical), R&TTE conformity.

Totalconn srl declares that the equipment complies with the essential requirements and other relevant

provisions of Directive 1999/5/EC.

(See also declaration of conformity)

2.1. Conformity to ROHS directives

Totalconn srl declares that the apparatus WI4LINK is in conformity the essential requirements and with the relevant provisions specified by Directive 2002/95/EC "Restriction of the use of certain

Hazardous Substances (RoHS)". (see ROHS chapter)

2.2. Limitations of use: ministerial regulations

It should be noted that the use of the apparatus in question is regulated by each country Regulatory Laws.

In Italy : d.l.vo 1.8.03, n.259, art. 105 (free use) and relevant modifications, for private uses;

ALERT SIGN

European recommendation ERC/REC 70-03 declare the limits of the use of the equipment radiolan and HIPERLAN in the various frequency bands:

17.100–17.300MHz 20dbm (italian PNF, march 2009)

2.3. Warranty

The warranty conditions are set out in Annex A. Please review it.



of 28


2.4. Warnings

This manual is intended for:

• Certified Partner as a result of course "Wireless Router WI4NET" • Technical installers

• Maintainers • Network management personnel or other technical staff, informed regarding the risks and safety

standards for installation, use and maintenance of equipments for radio communications.

The installer must check the functionality of the WI4LINK and do not perform corrective actions if not in the certainty of their effect.

It 'absolutely forbidden to open the equipment, or the warranty is void.

In doubt, contact our technical staff: e-mail: [email protected] or [email protected]

The manufacturer is not liable for any consequences to persons or property caused in cases of:

• improper use • use by unskilled personnel

• incorrect installation

• faulty or inadequacy of the materials used for the installation • unauthorized changes

• use of spare parts that are not compatible with the original • failure to comply with the instructions set out in this document

The manual covers only the use of the device in the application specified by the manufacturer and under existing regulation for Radio & Telecommunication Equipments.

mailto:[email protected]

mailto:[email protected]



of 28


3. “WI4LINK” DESCRIPTION

3.1. Purpose of use specified by the manufacturer.

The WI4LINK, in all its versions, is a telecommunication device for outdoor use, which operates in the frequency of 17100-17300 Mhz, using the 802.11n protocols for the transmission of data, video, voice.

3.2. Composition

• Indoor Unit or IDU: Gigabit Power Over Ethernet adapter (POE) • Outdoor unit or ODU

• Parabolic antenna, directly connected, with mounting brackets

The WI4LINK is constituted by two units:

The indoor unit, called "IDU" is connected to the local ethernet and with the outdoor unit using a

CAT6 shielded multipair cable.

The antenna outdoor unit (ODU), with die-cast aluminum housing that offers IP67 protection, contains the control board and the transceiver unit directly connected to the antenna.

The unit "ODU" is powered by a SELV type power supply, ensuring the safety of the installer to 24VDC.

Input 100 ÷ 240Vac 50/60Hz Output 24Vdc 0.8 A min.

The casing of the antenna must necessarily be grounded. The WI4LINK must be used only in conjunction with the following dedicated antennas:

Antenna code Description Frequency Type Gain

ANTJ1765 Wi4Link Parabolic antenna, 17GHz, 65cm,

including mount. kit

17.1-17.3GHz PARABOLIC 38,6±0,7dbi



17.1-17.3GHz PARABOLIC 34,8±0,5dbi



17.1-17.3GHz PARABOLIC 41-41,8dbi

Internal tests were performed on the 65cm antennas, to verify the effective limitation of the transmitters within the limits of EIRP allowed by European laws.



of 28


3.3. IDU and ODU units:

Image.1 - WI4LINK ODU without antenna

Image.2 - gigabit POE unit



of 28


3.4. WI4LINK datasheet



of 28


4. INSTALLATION

4.1. Mounting and connections.

The WI4LINK product is in compliance with the safety requirements to protect the operator from electrical hazards, direct and indirect. However, the installation requires a qualified and

certified personnel, who will observe the following precautions:

Connect the power supply to a source protected from external events that can generate

discharges or surges higher in magnitude and duration to those filtered by the apparatus.

The case of the ODU must necessarily be connected to the

grounding.

Check the integrity of the parts, and

report any damage immediately to

Totalconn.

Make sure that the grounding system

follows the block diagram shown

below.

Fix the ODU unit using the

supplied stand.



of 28


Fig.3 WI4LINK ODU mounted, with antenna

Close Nielsen clips so that the ODU is parallel to the aluminum support.

Ground the system using the contact shown in the figure.

Connect IDU and ODU using a shielded ethernet cable for outdoor, CAT6 SFTP

(optional) The maximum recommended length for-SFTP Cat6 cable is 90m.

Vertical pol.



of 28


SFP-CAT6 Cable assembly

Before connectorizing the RJ45 plug insert the connector cover (insulation that offers protection IP67) shown in Figure:

IDU – ODU connection is direct straight (do not cross plug RJ45 ) and follows the usual ETH schema :

Solder the wire to the outer metal shield of the RJ45 plug, as shown in figure:

Fig.4 grounding of the RJ-45 plug



of 28


4.2. Antenna pointing.

The installation of the ODU and antenna pointing must be done by qualified personnel, aware of the

safety regulations for personnel working at height outdoors, above roofs of buildings or on towers for telecommunications.

Totalconn Srl is not responsible for damages to persons and / or properties resulting from the

installation of the unit, external antennas and ODU.

We recommend:

• Place the antenna as high as possible to have a connection more efficiently.

• Place the ODU properly behind the antenna, making sure that all the four retaining clips are properly closed and that the device is aligned with the antenna.

• Check the optical visibility with the other antenna.

• Check for the presence of vegetation, the growth of which would impede the propagation of the radio link between the two points.

• In the absence of-sight allignment according to the angles specified by the radio project. This task can be difficult using parabolic antennas because the opening angle is very small.

WI4LINK offers a web interface modified, compared with ordinary equipment with mikrotik RouterOS. This interface is simplified so as to offer, and to allow to change only the information necessary to get

a good point to point link.

We suggest to use, for the sighting and the configuration, the interface WEBFIG, which you can reach

by connecting with a browser at the address: http://192.168.17.1/webfig

for the “master” device, and http://192.168.17.2/webfig

for the “remote” device, instead of the interface winbox.

When the device is turned on and the link is working, optimize the signal using the status page of the

apparatus, which appears as below. The screen is slightly different between the two devices, because one is configured as "master" and

the other as "remote", but it provides on both the same type of information.



of 28


In addition, the apparatus WI4LINK offers an analog output signal related to the pointing, on a BNC

connector.

This output has a voltage value proportional to the level of signal received by the device, according to the following table.



of 28


The level can be measured with a meter to get an immediate visual information about the status of

pointing.

4.3. Configuration of WI4LINK

The operating system pre-installed on the apparatus is RouterOS, whose manual is available online at the following internet address: http://www.mikrotik.com/documentation.html

For the configuration of the apparatus is recommended to use the utility webfig, pre-installed. The

utility is based on the integrated web server on the apparatus, and therefore accessible to the IP

address of the apparatus itself.

Or use WinBox, which can be downloaded at this Internet address: http://www.mikrotik.com/download.html, or from our website in the download section:

http://www.wi4net.it/index.php?option=com_remository&Itemid=72&lang=it .

The guide for the use of WinBox can be found at this web address:

http://www.mikrotik.com/docs/ros/2.9/guide/winbox

The apparatus is provided with an IP address:

Master 192.168.17.1/24

http://www.mikrotik.com/documentation.html

http://www.mikrotik.com/download.html

http://www.wi4net.it/index.php?option=com_remository&Itemid=72&lang=it

http://www.mikrotik.com/docs/ros/2.9/guide/winbox



of 28


Remote 192.168.17.2/24,

on Ether1 interface. The first address is set in the master, the second in the remote.

If you can not access the apparatus via its IP address, you can do so via winbox and MAC address. In this case, from winbox interface, you must select the MAC address of the device.

To access the configuration via webfig, you must set on your PC an address in the same subclass

(192.168.17.x netmask 255.255.255.0), and login to the system by entering the following

username and password (note the capital letter on password):

username: user password: User (only for testing with Webfig , admin password will be provided by email)

4.3.1. Setting the transmission power

In compliance with the regulations, in Italy, you MUST manually set the transmit power to limit the

EIRP under 100mw (20dbm) at antenna, as in the following:

country : italy frequency mode: superchannel

Tx Power: related to the used antenna:

Antenna type Tx Power

40cm, 35dbi 7dbm

65cm, 38,6dbi 4dbm

90cm, 41dbi 1dbm

The device contains a signal attenuator, which can be switched on or off via two webfig commands,

as in the figure. The units are preconfigured in factory with the attenuator switched on.



of 28


In case the attenuator is turned on, the output power should be calculated in the following way:

Radio Conversion loss Attenuator Antenna 40cm Resulting power

7dBm -7dB -20dB +35dB 15dB (x 2 channels = 18dB)


4dBm -7dB -20dB +38,6dB 15,6dB (x 2 channels = 18.6dB)



of 28



1dBm -7dB -20dB +41dB 15dB (x 2 channels = 18dB)

In case the attenuator is turned off, the output power should be calculated in the following way:

Radio Conversion loss Antenna 40cm Resulting power

4dBm -7dB +35dB 32dB (x 2 channels=35dB) Radio Conversion loss Antenna 65cm Resulting power

1dBm -7dB +38,6dB 32,6dB (x 2 channels = 35,6dB) Radio Conversion loss Antenna 90cm Resulting power

1dBm -7dB +41dB 35dB (x 2 channels = 35,6dB)

The device are configured to be used under the Italian operating frequencies and the transmission power will comply with the values of maximum EIRP (100mW=20dbm).

The maximum permitted EIRP at 17GHz is 100 mW, equal to 20 dBm

It should be noted that the frequencies between 17100 and 17300Mhz can only be used for point-to-point, and not for point-to-multipoint distribution.



of 28


The main configuration parameters are accessible via webfig.

Webfig is a safety interface, and restricts editing apparatus to what is necessary to set up a point to

point link. We recommend using winbox instead webfig only if you are sure of what you are doing, and please

note that resetting the device to factory settings, power, channel and bridge connection will be automatically restored.

The attenuator, however, remains in the state of last setting.

The screen below shows the options that webfig provides for the configuration of the radio part of the

bridge to 17GHz. The fields are already configured to be able to have a high bandwidth, in the presence of a received

signal level of at least-82dB, with latencies around two milliseconds for the packets.

The security is demanded to the key of the NV2 Protocol, proprietary of Mikrotik.



of 28




of 28


In order to reach the unit from your local network, it is important to set a static IP address, or get one through DHCP.

The next screen shows the webfig’s dialog box from which you can configure the IP address of the device.



of 28


The screen below shows you how to set up the apparatus so that the IP address is obtained

automatically from a DHCP server on the network:

Normally the IP address should be assigned to the interface “Bridge@17”, which brings together the

ethernet1 and wireless. Anyway, you can also use the ethernet2, or add it to the "Brige17G" along with the other interfaces.



of 28


17Ghz Channels

The Wi4Link apparatus is configured so as to define a series of channels between the frequencies of 17100Mhz and 17300Mhz, with different bandwidths.

This allows, on the same tower, to have more repeaters, without that these not interfere significantly, and to obtain high values of the signal/noise ratio while maintaining a reduced amplitude of the

channel. So, covering greater distances than an apparatus that uses the entire available bandwidth. The table that follows lists the channels defined on the apparatus. The same channels are defined

with different bandwidths, and for each channel are shown (approximately) the start and end

frequency. The 17GHz channels are obtained from the 2.4Ghz channels, using a frequency shifter that adds an

offset of 14850Mhz to the initial channel.

Channels on Wi4Link 17Ghz

Frequency Shift Amplitude Channel From freq To freq

2270 14850 20 17120-20Mhz 17110 17130

2270 14850 40 17120-40Mhz 17110 17150

2270 14850 50 17120-50Mhz 17107,5 17157,5

2290 14850 20 17140-20Mhz 17130 17150

2290 14850 40 17140-40Mhz 17130 17170

2290 14850 50 17140-50Mhz 17127,5 17177,5

2310 14850 20 17160-20Mhz 17150 17170

2310 14850 40 17160-40Mhz 17150 17190

2310 14850 50 17160-50Mhz 17147,5 17197,5

2330 14850 20 17180-20Mhz 17170 17190

2330 14850 40 17180-40Mhz 17170 17210

2330 14850 50 17180-50Mhz 17167,5 17217,5

2350 14850 20 17200-20Mhz 17190 17210

2350 14850 40 17200-40Mhz 17190 17230

2350 14850 50 17200-50Mhz 17187,5 17237,5

2370 14850 20 17220-20Mhz 17210 17230

2370 14850 40 17220-40Mhz 17210 17250

2370 14850 50 17220-50Mhz 17207,5 17257,5

2390 14850 20 17240-20Mhz 17230 17250

2390 14850 40 17240-40Mhz 17230 17270

2390 14850 50 17240-50Mhz 17227,5 17277,5

2410 14850 20 17260-20Mhz 17250 17270

2410 14850 40 17260-40Mhz 17250 17290

2430 14850 20 17280-20Mhz 17270 17290



of 28


Possible modulations and real-life transfer-rate.

The modulations possible for the apparatus are those provided by the standard IEEE802.11n-2009, and are encoded by consecutive numbers.

The apparatus WI4LINK uses two chain of transmission, and can use all the modulations between MCS0 and MCS15.

MCS Spatial Modulation Coding Data rate (Mbit/s)

index streams type rate 20 MHz channel 40 MHz channel

50 MHz channel

0 1 BPSK 01-02 unused - 802.11g 15.00 18.70

1 1 QPSK 01-02 unused - 802.11g 30.00 37.50

2 1 QPSK 03-04 unused - 802.11g 45.00 56.20

3 1 16-QAM 01-02 unused - 802.11g 60.00 75.00

4 1 16-QAM 03-04 unused - 802.11g 90.00 112.50

5 1 64-QAM 02-03 57.80 120.00 150.00

6 1 64-QAM 03-04 65.00 135.00 168.70

7 1 64-QAM 05-06 72.20 150.00 187.50

8 2 BPSK 01-02 unused - 802.11g 30.00 67.50

9 2 QPSK 01-02 unused - 802.11g 60.00 75.00

10 2 QPSK 03-04 unused - 802.11g 90.00 112.50

11 2 16-QAM 01-02 57.80 120.00 150.00

12 2 16-QAM 03-04 86.70 180.00 225.00

13 2 64-QAM 02-03 115.60 240.00 300.00

14 2 64-QAM 03-04 130.00 270.00 337.50

15 2 64-QAM 05-06 144.40 300.00 375.00

Note:

On mikrotik, unused modulations are replaced by '802.11G, that is 54mbps. Because of the channel, and modulation speed, the actual speed of each modulation is about 77% of the nominal.

An adaptive algorithm makes sure that the apparatus to automatically select the best modulations.

At each modulation corresponds a theoretical maximum bandwidth. In practice, the real bandwidth is less, because part of the available bandwidth is lost in the transmission protocol and in the control of

errors. In the absence of errors, the real bandwidth is expressed as a percentage of the theoretical

bandwidth (around 77%). In the presence of errors this value can be reduced greatly due to the retransmission of erroneous packets.

The apparatus allows to evaluate the amount of errors on the transmission with the parameters

TX/RX CCQ. These parameters are expressed the percentage of packets received correctly in both directions of the channel.

Low values of TX or RX CCQ are caused by wrong antenna pointing, by the presence of reflected signals together with those received, by the presence of obstacles, even small, within the ellipsoid of

Fresnel, from simple high distance, and at the frequency of 17GHz also from changes in the weather..

In case the TX or RX CCQ are less than 100%, it may be advisable to turn off the modulations of

higher order, from MCS15, until arriving to a situation with CCQ close to 100%. This helps to get more stability, and often much more bandwidth.

http://en.wikipedia.org/wiki/Code_rate

http://en.wikipedia.org/wiki/Code_rate

http://en.wikipedia.org/wiki/BPSK

http://en.wikipedia.org/wiki/QPSK


http://en.wikipedia.org/wiki/QAM





http://en.wikipedia.org/wiki/BPSK










of 28


ROHS Conformity

The comunitary directive “Restriction of the use of certain Hazardous Substances (RoHS) 2002/95/EC”, corresponding in Italy to D.lgs. 25/07/2005 n.151, restricts the use of certain hazardous substances in

electrical and electronic equipment.

The directive 2002/96/CE aims to regulate, restrict or prohibit the disposal of electrical and electronic equipment containing hazardous substances according to Directive 2002/95/EC, binding in the EU

constitutional treaty (full harmonization).

The provisions of the Directive apply to equipment in Annex IA of the previous directive for categories

1,2,3,4,5,6,7 and 10, as well as incandescent lamps and lighting fixtures for housing.

Provisions:

The Directive stipulates that from 1 July 2006 the equipment put on the market does not contain: • Lead;

• Mercury; • Cadmium;

• Hexavalent Chromium; • polybrominated biphenyls (PBB);

• Bifenileteri ethers (PBDE).

Exemptions:

This prohibition does not apply to the applications listed below, for which there are exemptions (see details in the text of the Directive):

• Mercury in lamps (compact fluorescent lamps, fluorescent tubes);

• Lead in glass of cathode ray tubes, electronic components and fluorescent tubes; • Lead in some alloys of steel, aluminum and copper;

• Lead in certain types of welds (high temperature, server, memory systems, telecommunications systems); • Cadmium plating except for the rules laid down in Directive 76/769/EEC (amending 91/338/EEC);

• Hexavalent chromium as an anti-corrosion in some applications.

Totalconn Srl fully complies with the RoHS and WEEE program, and has endeavored to perform all actions necessary to comply with the directives in question. Our company is associated with the Remedia Consortium, which manages the transport, treatment and recycling of Waste Electrical and Electronic Equipment (RAEE).

- Register of A.E.E. IT09070000006182 - The Contribution for Batteries and Accumulators is acquitted when due.

- National Register IT09070P00001536

http://www.wi4net.it/index.php?option=com_banners&task=click&bid=10&lang=it



of 28


ROHS Compliance CE directive 2002/95/CE, 2002/96/CE e 2003/108/CE

INFORMATION FOR USERS OF DOMESTIC AND PROFESSIONAL EQUIPMENT

Under Article 13 Italian Legislative Decree July 25, 2005, No 151 "Implementation of European Directives 2002/95/EC, 2002/96/EC and 2003/108/EC, regarding the reduction of hazardous substances in electrical and electronic equipment, and disposal of waste" The crossed out wheelie bin symbol on the equipment or its packaging indicates that the product at the end of its useful life must be collected separately from other waste.The user must therefore dispose of the product in question at the appropriaterecycling centers for electronic and electrical waste, or hand it to the dealer whenbuying a new equivalent product, on a one to one. Proper waste collection equipment for subsequent recycling, treatment andenvironmentally compatible disposal contributes in preventing possible adverse effects on the environment and health and promotes the reuse and / or recycling ofmaterials that make up equipment. Illegal dumping of the product by the user involves the application of penalties underthe current provisions of law.



of 28


5. Annex A: WARRANTY

REPORT TO STANDARDS OF NATIONAL WARRANTY

The following warranty conditions apply until it would be contrary to current regulations.

1. WARRANTY SERVICES

Totalconn SRL grants, pursuant to the regulations in force, the one-year warranty on all mechanical and electronic components of the product, from the date of delivery. If defects should occur during this period

that are not based on one of the causes listed in paragraph 3, Totalconn will act at their own discretion,

repairing or replacing the unit, using new replacement parts or items of equal value renewed.

If warranty claims are legitimate, the product will be returned carriage paid.

Warranty claims other than those mentioned above are not in any way granted.

2. RETURN MERCHANDISE AUTHORIZATION (RMA)

To check in advance the legitimacy of the repair, the warranty provides that before sending unit by the purchaser, the same is put in communication with Totalconn Ltd. during office hours by phone or by email at

[email protected], informing it of the defect.

In this case, the purchaser will receive a number of repair (RMA). Totalconn communicate the address where to send the machine which must accordingly be shipped with

transportation charges prepaid, enclosing the RMA, with packaging in order to preserve the integrity of the content.

Shipments without an RMA number will not be accepted, and returned to the sender.

In case of warranty repair the product will be returned to the customer using a courier paid by Totalconn srl.

3. WARRANTY PROVISIONS

Warranty services are provided only upon presentation of a copy of the original bill of sale.

The warranty covers the product to be repaired or even replaced, at the discretion of Totalconn srl.

If the product needs to be changed, because of the production output of one or more components,

Totalconn srl reserves the right to use material of equal quality to resolve defects.

The warranty does not authorize the inspection or maintenance, or repair the unit free of charge, if the

defects are due to wear, or inappropriate use of the same. The parts subject to wear are: external parts, sockets and connectors, mechanical parts.



of 28


The warranty excludes any damage to the equipment caused by:

• Misuse or improper use of the device or for purposes other than intended, or in non-compliance with the instructions provided by Totalconn srl in the manual of use and maintenance.

• Connection or use of the product in a manner inconsistent with applicable local technical or safety standards in the country in which the product is used.

• Damage due to acts of force majeure, or other reasons that do not fall within the competence of Totalconn.

• Danger of damage to the unit caused by direct or indirect lightning.

• Damage to electronic equipment caused by voltage peaks from the mains.

The warranty will be voided if the product has been opened or repaired by unauthorized personnel, or by the hand of the customer.

If, in the course of repair all equipment performed by Totalconn srl, will be noticed a damage not covered by the warranty claim, the costs resulting from such verification will be borne by the customer.

The products without warranty will be repaired exclusively at the customer's expense in the face of a quote.

If the detected failure is judged out of warranty, the repaired product will be returned with costs borne by the customer.

4. TRANSFERABILITY OF THE WARRANTY

The warranty extends only to the original purchaser and is not transferable in any way. Except Totalconn srl,

no third party is entitled to promise a warranty in the name of Totalconn srl.

5. DAMAGE REFUNDING

Totalconn srl is not responsible in any way for any service interruptions caused by the malfunction of

equipment produced by Totalconn same. The responsibility of Totalconn srl is limited, in each case, to the value of the product.



of 28


outdoor wireless bridge @17ghz w4link - servicenet · • indoor unit or idu: gigabit power over...

Documents