Fast Ethernet Switch
AT-FS717FC/SC
Installation Guide
®
PN 613-000560 Rev C
Page 1: ...Fast Ethernet Switch AT FS717FC SC Installation Guide PN 613 000560 Rev C ...
Page 2: ...Inc reserves the right to make changes in specifications and other information contained in this document without prior written notice The information provided herein is subject to change without notice In no event shall Allied Telesis Inc be liable for any incidental special indirect or consequential damages whatsoever including but not limited to lost profits arising out of or related to this ma...
Page 3: ...ment generates uses and can radiate radio frequency energy and if not installed and used in accordance with instructions may cause harmful interference to radio or television reception which can be determined by turning the equipment off and on The user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the ...
Page 4: ...ctrical Safety and Emissions Standards 4 EMI FCC Class B CISPR 22 Class B EN55022 Class B C TICK CE Immunity EN55024 Electrical Safety UL 60950 CULUS EN60950 TUV Laser EN60825 This is a Class 1 LED Product ...
Page 5: ...de este equipo Cuando vea el símbolo vaya al Apéndice B para ver el mensaje de seguridad traducido a su idioma Important L annexe B contient les instructions de sécurité relatives à l installation de cet équipement Lorsque vous voyez le symbole reportez vous à l annexe B pour consulter la traduction de ces instructions dans votre langue Importante l Appendice B contiene avvisi di sicurezza tradott...
Page 6: ...hing Basics 18 MAC Address Table 18 Duplex Mode 19 Store and Forward 19 Backpressure and Flow Control 19 Network Topologies 21 Standalone Topology 21 Ethernet Hub Topology 22 Backbone Topology 23 Invalid Loop Topology 24 Chapter 2 Installation 25 Reviewing Safety Precautions 26 Selecting a Site for the Switch 27 Planning the Installation 28 Unpacking the Switch 29 Installing the Switch on a Table ...
Page 7: ...ns 41 Physical Specifications 41 Environmental Specifications 41 Power Specifications 41 Safety and Electromagnetic Emissions Certifications 42 Compliance Standards 42 RJ 45 Twisted Pair Port Connectors 43 SC Type Connector 44 Dual SC Connector 44 Appendix B Translated Safety Statements 45 ...
Page 8: ...ters and appendices Chapter 1 Product Description on page 11 Chapter 2 Installation on page 25 Chapter 3 Troubleshooting on page 40 Appendix A Technical Specifications on page 41 Appendix B Translated Safety Statements on page 45 This preface contains the following sections How This Guide is Organized on page 8 Document Conventions on page 9 Contacting Allied Telesis on page 10 ...
Page 9: ...conventions to highlight important information Note Notes provide additional information Warning Warnings inform you that performing or omitting a specific action may result in bodily injury Caution Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data ...
Page 10: ... alliedtelesis com Select your country from the list displayed on the website Then select the appropriate menu tab Returning Products Products for return or repair must first be assigned a Return Materials Authorization RMA number A product sent to Allied Telesis without a RMA number will be returned to the sender at the sender s expense To obtain a RMA number contact Allied Telesis Technical Supp...
Page 11: ...iption This chapter contains the follows sections Overview on page 12 Key Features on page 13 Standards on page 13 Hardware Feature Description on page 14 A Few Ethernet Switching Basics on page 18 Network Topologies on page 21 ...
Page 12: ... providing full duplex operation over a twisted pair port Figure 1 illustrates the front panel of the AT FS717FC SC switch Figure 1 AT FS717FC SC Front Panel Figure 2 illustrates the back panel of the AT FS717FC SC switch Figure 2 AT FS717FC SC Back Panel The switch features sixteen 10 100Base TX copper twisted pair port and one fixed 100Base FX fiber optic port The twisted pair ports feature RJ 4...
Page 13: ...connectors 100 Mbps 100Base FX fiber optic port with SC connector System and port LEDs Duplex mode switch for fiber optic port Support half or full duplex mode on all ports Auto MDI MDI X on all 10 100 Mbps twisted pair ports Auto Negotiation IEEE 802 3u compliant Flow control IEEE 802 3x compliant Store and forward packet forwarding Storage up to 4K MAC addresses For use on a desktop in a rack or...
Page 14: ... T and 100Base T compliant and are capable of 10 megabits per second Mbps and 100 Mbps speeds The ports are IEEE 802 3u Auto Negotiation compliant With Auto Negotiation the switch automatically matches the highest possible common speed between each switch port and each end node For example if an end node is capable of only 10 Mbps the switch sets the port connected to the end node to 10 Mbps Duple...
Page 15: ...ase FX Fiber Optic Port The AT FS717FC SC Fast Ethernet switch features one fiber optic port The features of the fiber optic port are explained in the following sections Type of Connector The fiber optic port features a SC connector Port Speed The fiber optic port is 100Base FX compliant and has fixed operating speed of 100 Mbps The end node connected to the fiber optic port on the switch must als...
Page 16: ... SC Fast Ethernet switch Table 1 System and Port LEDs LED State Description POWER Green The switch is powered ON and operating normally OFF The switch is not receiving power 10 100TX Twisted Pair Port 100M Green The twisted pair port is operating at a speed of 100 Mbps OFF The twisted pair port is operating at a speed of 10 Mbps LINK ACT Green A valid link is established on the twisted pair port B...
Page 17: ... FS717FC SC Fast Ethernet switch has a single AC power supply socket on the back panel which has an auto switch AC input Refer to Appendix A Technical Specifications on page 41 for the input voltage specifications To power ON or OFF the switch you connect or disconnect the power cord ...
Page 18: ...the MAC addresses of the devices that are connected to the switch s ports and the port number where each address was learned When the switch receives a packet it also examines the destination address and by referring to its MAC address table determines the port on which the destination end node is connected It then forwards the packet to the appropriate port and on to the end node This increases n...
Page 19: ...s not retransmit the frame out the destination port until it has received the entire frame and stored the frame in a port buffer It then examines the frame to determine if it is a valid frame Invalid frames such as fragments or runts are discarded by the switch This insures that only valid frames are transmitted out the switch ports and that damaged frames are not propagated on your network Backpr...
Page 20: ...on of data from an end node Whenever the switch wants an end node to stop transmitting data it issues this frame The frame instructs the end node to cease transmission for a period of time specified within the frame The switch continues to issue PAUSE frames until it is ready again to receive data from the end node This is referred to as flow control ...
Page 21: ...t hub and backbone Each type of topologies is described below Standalone Topology Figure 3 illustrates the Standalone topology where each end node is connected directly to a 10 100Base TX port on an AT FS717FC SC switch This gives each end node a dedicated 10 Mbps or 100 Mbps link Figure 3 Standalone Topology 1070 Workstations Workstations Server 10 Mbps 100 Mbps AT FS717FC SC ...
Page 22: ...oups by controlling the flow of data between the workgroups The switch transfers an Ethernet frame from hub to hub only when the destination node for the frame is on a different hub than the node that originated the frame This reduces the amount of unnecessary data traffic in each workgroup and frees up bandwidth and improves network performance Figure 4 Ethernet Hub Topology 1143 10 Mbps 100 Mbps...
Page 23: ...mely useful You can use the ports to create a fiber optic backbone With a maximum operating distance of 2 kilometers 1 2 miles the ports can be used to connect together switches that are physically apart In the topology shown in Figure 5 one AT FS717FC SC one AT FS706EFC SC and one AT FS709EFC SC switches are interconnected using the fiber optic ports Figure 5 Backbone Topology 1140 AT FS706EFC SC...
Page 24: ...between any two end nodes in your network An invalid loop can result in what is referred to as broadcast storms where Ethernet frames caught in repeating cycles can needlessly consume network bandwidth and hang up the entire network An example of an invalid loop topology is shown in Figure 6 Figure 6 Invalid Loop Topology AT FS706EFC SC 1142 AT FS717FC SC AT FS717FC SC Ethernet Hub ...
Page 25: ...ting a Site for the Switch on page 27 Planning the Installation on page 28 Unpacking the Switch on page 29 Installing the Switch on a Table or Desktop on page 30 Installing the Switch in a Rack on page 32 Wall Mounting the Switch on page 33 Cabling an AT FS717FC SC Switch on page 35 Powering On the Switch on page 39 ...
Page 26: ...ipment or cables during periods of lightning activity 4 Warning Power cord is used as a disconnection device To de energize equipment disconnect the power cord 5 Warning Class I Equipment This equipment must be earthed The power plug must be connected to a properly wired earth ground socket outlet An improperly wired socket outlet could place hazardous voltages on accessible metal parts 6 Caution ...
Page 27: ... table is level and secure The power outlet for the switch should be located near the unit and should be easily accessible The site should provide for easy access to the ports on the front of the switch This will make it easy for you to connect and disconnect cables as well as view the switch s LEDs To allow proper cooling of the switch air flow around the unit and through its vents on the side an...
Page 28: ...sequently you can use a straight through twisted pair cable when connecting any network device to a twisted pair port on the switch A port operating at 10 or 100 Mbps uses four of the eight strands in twisted pair wiring Table 2 Twisted Pair Cabling and Distances Speed Type of Cable Maximum Operating Distance 10 Mbps Category 3 or better 100 ohm shielded or unshielded twisted pair cable 100 m 328 ...
Page 29: ...original shipping material if you need to return the unit to Allied Telesis 2 Place the switch on a level secure surface 3 Verify that the following hardware components are included in your switch package If any item is missing or damaged contact your Allied Telesis sales representative for assistance One AT FS717FC SC Fast Ethernet switch One wall mounting kit One rack mounting kit Four self adhe...
Page 30: ...ion 4 Connected the twisted pair cables to the twisted pair ports When connecting a twisted pair cable to a port observe the following guidelines An RJ 45 connector should fit snugly into the port on the switch The tab on the connector should lock the connector into place You should check to be sure that you are using the appropriate type of twisted pair cabling Refer to Twisted Pair Cabling and D...
Page 31: ...ER LED is green If the LED is OFF refer to Installation on page 25 for instructions Note The switch perform a self diagnostic test upon power up This takes about 20 seconds to complete 7 Power ON the end nodes connected to the switch 8 Check that all the LINK ACT LEDs are green If any of the LEDs is OFF refer to Installation on page 25 for instructions The switch is now ready for use ...
Page 32: ...wer cord from the switch 2 Attach the two mounting brackets provided to the sides of the switch using the bracketmounting screws provided as shown in Figure 8 Figure 8 Attaching Brackets for Rackmounting 3 Mount the switch in a 19 inch rack using rackmounting screws not provided as shown in Figure 9 Figure 9 Rackmounting the Switch The switch is now ready for cabling and powering up 1135 1136 ...
Page 33: ...l equipment from the package and store the packaging material in a safe place 2 If attached remove the rubber feet data cables and power cord from the switch 3 Select a wall location for the switch 4 Mark two hole locations on the wall 5 At the marked locations for the holes pre drill for the drywall anchors and drive the screws through the holes 6 Align the switch horizontally as illustrated in F...
Page 34: ...h onto the wall using the two keyhole slots located in the bottom of the switch as illustrated in Figure 11 Figure 11 Wallmounting an AT FS717FC SC Switch 8 Make sure that the switch is securely mounted onto the wall The switch is now ready for cabling 1137 ...
Page 35: ...able to connect any type of network device to a port on the converter The network should not contain data loops which can adversely affect network performance A data loop exists when two or more network devices can communicate with each other over more than one data path To connect to the 10 100Base TX port perform the following procedure 1 Connect the twisted pair cable to the twisted pair port a...
Page 36: ...nother fiber optic port that has a maximum distance of 20 kilometers 12 4 miles and an operating wavelength of 1550 nm Dual SC port shown in Figure 13 consists of two separate connectors Each connects to a separate fiber strand One is for receiving data and the other is for transmitting data When connecting a fiber optic cable to a SC port be sure that the receiver fiber connector is connected to ...
Page 37: ...over from the fiber optic port as shown in Figure 14 Figure 14 Removing the Dust Cover from a Dual SC Fiber Optic Port 2 Connect the appropriate optical cable to the port as shown in Figure 15 Figure 15 Connecting to the Dual SC Fiber Optic Port 3 Connect the other end of the optical cable to the link partner 4 Power ON the end nodes 5 Check that all the LINK ACT LEDs are green If any of the LEDs ...
Page 38: ...n the front panel of the chassis 2 Use the tip of a pen to manually change the duplex mode switch to half or full duplex mode as shown in Figure 16 Figure 16 Changing Fiber Optic Port Duplex Mode Switch Manually The 100FX duplex mode switch specifications are as follows Upper position The fiber optic port is operating in half duplex mode Lower position The fiber optic port is operating in full dup...
Page 39: ... the back panel of the unit as shown in Figure 17 Warning Power cord is used as a disconnection device To de energize equipment disconnect the power cord 5 Caution Use only safety licensed power supply cord Figure 17 Connecting AC Power Connector to a Switch 2 Plug the other end or the power cord into a wall outlet 3 Power on the end nodes 4 Verify that the POWER LED is green If the LED is OFF ref...
Page 40: ...ch Verify that the power outlet has power by connecting another device to it Try connecting the unit to another power source Try using a different power cord Verify that the voltage from the power source is within the required levels for your region Verify that the LINK ACT LED for each port is ON If a LINK ACT LED is OFF do the following Verify that the end node connected to the port is powered O...
Page 41: ...erating Temperature 0 C to 40 C 32 F to 104 F Storage Temperature 25 C to 70 C 13 F to 158 F Operating Humidity 5 to 90 non condensing Storage Humidity 5 to 95 non condensing Operating Altitude Range Up to 10 000 feet 3 048 meters MTBF 440 000 hours Power Specifications Power Consumption 10 watts maximum AC Input Electrical Ratings AC 100 240 VDC Frequency 50 60 Hz Rated Output 3 3 VDC 4A ...
Page 42: ...ss B CISPR 22 Class B EN55022 Class B C TICK CE Immunity EN55024 Electrical Safety UL 60950 CULUS EN60950 TUV Laser EN60825 This is a Class 1 LED Product Compliance Standards IEEE 802 3 Ethernet IEEE 802 3i 10Base T IEEE 802 3u 100Base TX IEEE 802 3x Flow Control Symmetric and Asymmetric RoHS Compliant ...
Page 43: ... to an RJ 45 connector and port Figure 19 RJ 45 Connector and Port Pin Layout Table 3 lists the RJ 45 pin signals when a twisted pair port is operating in the MDI configuration Table 4 lists the RJ 45 port pin signals when a twisted pair port is operating in the MDI X configuration Table 3 MDI Pin Signals 10Base T or 100Base TX Pin Signal 1 TX 2 TX 3 RX 6 RX Table 4 MDI X Pin Signals 10Base T or 1...
Page 44: ...Technical Specifications 44 SC Type Connector Dual SC Connector The fiber optic cable as shown in Figure 20 is used to connect to the dual SC connector in the AT CM717FC SC switch Figure 20 Dual SC Connector Cable ...
Page 45: ... Sprachen Importante Este apéndice contiene traducciones en múltiples idiomas de los mensajes de seguridad incluidos en esta guía Important Cette annexe contient la traduction en plusieurs langues des instructions de sécurité figurant dans ce guide Importante Questa appendice contiene traduzioni in più lingue degli avvisi di sicurezza di questa guida Важно Данное приложение содержит переводы с раз...
Page 46: ...ket outlet shall be installed near the equipment and shall be easily accessible 8 Caution Air vents must not be blocked and must have free access to the room ambient air for cooling 9 Warning Operating Temperature This product is designed for a maximum ambient temperature of 40 degrees C 10 All Countries Install product in accordance with local and National Electrical Codes 11 Warning As a safety ...
Page 47: ...asily accessible 22 Caution To allow proper cooling of the gateway device make sure that the air flow around the unit and through its heatsink cooling fins on the rear is not restricted 23 Circuit Overloading Consideration should be given to the connection of the equipment to the supply circuit and the effect that overloading of circuits might have on overcurrent protection and supply wiring Appro...
Page 48: ...ed to install or to replace this equipment 34 Warning The power input must be provided from SELV source only per IEC 60950 Do not connect to a centralized DC battery bank 35 UL recognized wires of 18 AWG minimum should be provided by the installer 36 UL recognized wires of 22 AWG minimum should be provided by the installer 37 Caution Power to the hub must be sourced only from the adapter 38 If ins...
Page 49: ...ashbowl kitchen sink or laundry tub in a wet basement or near a swimming pool Avoid using a telephone other than a cordless type during an electrical storm There may be a remote risk of electric shock from lightning Do not use the telephone to report a gas leak in the vicinity of the leak 42 Warning Before connecting to the telephony TEL ports on the gateway device make sure to disconnect the Publ...
Page 50: ...ckdose angeschlossen werden Eine inkorrekt verdrahtete Steckdose kann gefährliche Spannungen auf zugängliche Metallteile aufbringen 7 Steckbare Ausrüstung Die Steckdose sollte in der Nähe der Ausrüstung installiert und leicht zugänglich sein 8 Vorsicht Belüftungsöffnungen dürfen nicht blockiert werden und müssen zur Kühlung durch die Umluft frei zugänglich sein 9 Achtung Betriebstemperatur Dieses ...
Page 51: ...ausgesetzt werden 20 Vorsicht Bei der Innenraummontage des Gateway Geräts ist darauf zu achten dass es in einer staubfreien Umgebung installiert wird Es sollte ein Installationsort gewählt werden an dem die Ports am Gateway Gerät gut zugänglich sind um das Anschließen und Abtrennen von Kabeln zu erleichtern und den freien Blick auf die LEDs zu ermöglichen 21 Achtung Die Stromquelle für die Gateway...
Page 52: ...Wartungsarbeiten sollten zur Reduzierung des Stromschlagrisikos alle Stromkabel abgetrennt werden 33 Achtung Das Installieren und der Austausch dieser Ausrüstung ist nur ausgebildetem und qualifiziertem Personal gestattet 34 Achtung Der Stromeingang darf nur über eine SELV Quelle gemäß IEC 60950 erfolgen Eine zentralisierte Gleichstrom Batteriebank darf nicht angeschlossen werden 35 UL anerkannte ...
Page 53: ...schbottichs in einem nassen Kellerraum oder in der Nähe eines Schwimmbads Vermeiden Sie die Verwendung eines Telefons mit Ausnahme eines schnurlosen Typs während eines Gewitters Es könnte eine geringfügige Blitzschlaggefahr bestehen Verwenden Sie das Telefon nicht um das Austreten von Gas zu melden wenn es sich in der Nähe dieser Gefahrenquelle befindet 42 Achtung Vergewissern Sie sich vor dem Ans...
Page 54: ...igrosas en las piezas metálicas accesibles para el usuario 7 El equipo requiere conexión La toma eléctrica debe estar situada cerca del equipo y ser de fácil acceso 8 Precaución Las rejillas de ventilación no deben estar obstruidas y deben tener libre acceso al aire de la sala para facilitar la refrigeración 9 Atención Temperatura de funcionamiento Este producto está diseñado para funcionar con un...
Page 55: ... de enlace De esta forma resultará fácil conectar y desconectar los cables y ver los indicadores LED 21 Atención La toma eléctrica de la unidad de puerta de enlace debe estar situada cerca de la unidad y ser de fácil acceso 22 Precaución Para permitir la refrigeración adecuada del dispositivo de puerta de enlace asegúrese de no limitar la circulación de aire alrededor de la unidad ni a través de l...
Page 56: ...convenientemente formado y cualificado 34 Atención La alimentación sólo debe proceder de una toma SELV conforme a la norma UEC 60950 No conecte la unidad a un banco centralizado de baterías CC 35 El instalador debe suministrar cables que figuren en la lista UL de un mínimo de 18 AWG 36 El instalador debe suministrar cables que figuren en la lista UL de un mínimo de 22 AWG 37 Precaución La alimenta...
Page 57: ...tano húmedo o cerca de una piscina Evite el uso de teléfonos no inalámbricos durante una tormenta eléctrica a fin de evitar el riesgo de electrocución como consecuencia de un rayo No utilice el teléfono para notificar una fuga de gas en las inmediaciones de la misma 42 Atención Antes de realizar la conexión a los puertos de telefonía TEL del dispositivo de puerta de enlace asegúrese de desconectar...
Page 58: ... branchée sur une sortie d alimentation correctement mise à la terre Dans le cas contraire les pièces métalliques accessibles risquent d être soumises à des tensions dangereuses 7 Équipement à connecter La prise d alimentation doit se situer à proximité de l équipement et être facilement accessible 8 Attention Les orifices de ventilation doivent rester libres de toute obstruction pour pouvoir assu...
Page 59: ...Si le périphérique servant de passerelle est installé à l intérieur s assurer qu il se trouve dans en endroit non poussiéreux Le site doit offrir un accès aisé au port du périphérique servant de passerelle afin de faciliter la connexion et la déconnexion des câbles tout en permettant d observer aisément les voyants 21 Avertissement La source d alimentation d une unité servant de passerelle doit se...
Page 60: ...tion débrancher tous les cordons d alimentation avant de procéder à la maintenance de l unité 33 Avertissement Seul le personnel qualifié et compétent est autorisé à installer ou à remplacer cet équipement 34 Avertissement L alimentation doit être fournie par une source SELV uniquement conformément à la norme IEC 60950 Ne pas connecter à une rangée de batteries c c centralisée 35 L installateur do...
Page 61: ...r ou un baquet dans un sous sol humide ou près d une piscine Éviter d utiliser le téléphone autre que sans fil en présence de foudre pendant un orage La foudre peut entraîner un léger risque d électrocution Ne pas utiliser le téléphone pour signaler une fuite de gaz à proximité de la fuite 42 Avertissement Avant de connecter les ports téléphoniques TEL sur le périphérique servant de passerelle vei...
Page 62: ...rrettamente cablato e messo a terra Un socket non correttamente cablato potrebbe trasferire voltaggi pericolosi su componenti di metallo accessibili 7 Apparecchiatura cablata Il socket deve essere installato accanto all apparecchiatura e deve essere facilmente accessibile 8 Attenzione Le prese d aria non devono essere ostruite e devono avere libero accesso all aria dell ambiente per raffreddare l ...
Page 63: ...visualizzare i LED in modo semplice 21 Avvertenza La fonte di alimentazione dell unità gateway deve essere posizionata vicino all unità in un luogo facilmente accessibile 22 Attenzione Per consentire il raffreddamento appropriato del dispositivo gateway verificare che il flusso d aria attorno all unità e attraverso le ventole di raffreddamento per la dispersione del calore poste sul retro non sia ...
Page 64: ...ra 34 Avvertenza L alimentazione deve essere fornita da una fonte SELV come specificato nello standard IEC 60950 Non collegare il dispositivo a una batteria CC centralizzata 35 I cavi riconosciuti UL di minimo 18 AWG non sono forniti in dotazione 36 I cavi riconosciuti UL di minimo 22 AWG non sono forniti in dotazione 37 Attenzione L hub deve essere alimentato solo mediante l adattatore 38 Se l in...
Page 65: ...cqua ad esempio vicino a vasche da bagno lavabi lavandini piscine oppure in ambienti umidi Non utilizzare un telefono di tipo non cordless durante un temporale esiste il rischio remoto che i lampi provochino scosse elettriche Per segnalare una perdita di gas non utilizzare il telefono in prossimità della perdita 42 Avvertenza Prima di utilizzare le porte per il collegamento telefonico TEL del disp...
Page 66: ...динение может подвергнуть доступные металлические части действию опасного напряжения 7 Розетки Розетка должна быть установлена невдалеке от оборудования и должна быть легко доступной 8 Предостережение Вентиляционные отверстия не должны быть заблокированы и должен быть свободный доступ к воздуху в комнате для охлаждения 9 Внимание Рабочая температура Этот продукт предусмотрен для температуры окружа...
Page 67: ...ботьтесь чтобы в помещении не было пыли Должен быть обеспечен легкий доступ к портам оборудования чтобы Вам было легко соединять и отсоединять кабели и видеть светодиоды 21 Внимание Источник питания должен быть невдалеке от установки и к нему должен быть удобный доступ 22 Предостережение Для хорошей вентиляции шлюзовой установки позаботьтесь чтобы вокруг установки и через вентиляционные решетки мо...
Page 68: ...хническим обслуживанием установки отсоедините все провода питания 33 Внимание Оборудование должно обслуживаться и заменяться только обученными и квалифицированными работниками 34 Внимание Питание должно подаваться только от источника SELV в соответствии с IEC 60950 Не подключайте к централизованному блоку аккумуляторов постоянного тока 35 Инсталлятор должен обеспечивать провода признанные UL миним...
Page 69: ...рядом с водой например ванной раковиной или стиральным резервуаров или в мокром подвале рядом с бассейном Во время электрической бури не используйте телефон кроме беспроводного Есть некоторый риск поражения от молнии Не используйте телефон для сообщения об утечке газа вблизи от утечки 42 Внимание Перед соединения к телефонным портам TEL на шлюзовой установке отсоедините городской телефон PSTN от п...
