- Indasteri Ethernet Switch
- Fiber Media Converter
- Fiber Ethernet switch
- Matla holim'a Ethernet
- SFP module
- Cable ea AOC/DAC
- Adapter ea Fiber Ethernet Server
- Fiber Video Converter
- Sefetoleli sa Interface
- PDH-SDH Multiplexer
- Phone Fiber Video Converter
- FTTH
- Li-Racks & Enclosures
- HDMI/VGA Extender
- HDMI Splitter
- WDM
- OTN / WDM Optical Transmission Network System
0102030405

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Boleng bo Botle ba SFP Module - 100Gb/S QSFP28 1310nm 10km LR4 LC Transceiver JHAQ28C10C - JHA
2016-01-08
Likarolo: ◊ 4 lane MUX/DEMUX moralo ◊ E Kopantsoeng CWDM TOSA / ROSA ho fihla ho 10 km e fihla ho feta SMF ◊ Tšehetsa 100GBASE-CWDM4 bakeng sa sekhahla sa mohala oa 103.125Gbps le OTU4 bakeng sa sekhahla sa 111.81Gbps ◊Gbps ◊Gbps ◊ Lihokelo tsa Duplex LC ◊ E lumellana le IEEE 802.3-2012 Clause 88 standard IEEE 802.3bm CAUI-4 chip to module standard ea motlakase ITU-T G.959.1-2012-02 standard · ◊ Single +3.3V dijithale Buil e sebetsang ◊ mesebetsi ◊ Mefuta e fapaneng ea mocheso 0°C ho isa ho 70 ° C ◊ RoHS Compliant Part Applications: ◊ Local Area Network (LAN) ◊ Wide Area Network (WAN) ◊ Ethernet switches le router applications Tlhaloso: JHAQ28C10C ke transceiver module e etselitsoeng 10km lisebelisoa tsa puisano tsa optical. Moralo o lumellana le 100GbASE-LR4 ea IEEE 802.3-2012 Clause 88 standard IEEE 802.3bm CAUI-4 chip to module standard standard ITU-T G.959.1-2012-02 . Mojule o fetola liteishene tsa 4 tse kenang (ch) tsa 25.78 Gbps ho data ea 27.95Gbps ea motlakase ho 4 lanes optical signals, 'me e li atisa ho ba mocha o le mong bakeng sa 100Gb / s optical transmission. Ka lehlakoreng le leng, ka lehlakoreng la moamoheli, module optically de-multiplexes ho kenya 100Gb / s ho matšoao a litsela tsa 4, 'me e li fetolela ho 4 lane output data ea motlakase. Bohareng ba maqhubu a litsela tse 4 ke 1270 nm, 1290 nm, 1310 nm le 1330 nm. E na le sehokelo sa duplex LC bakeng sa sebopeho sa optical le sehokelo sa 38-pin bakeng sa sebopeho sa motlakase. Ho fokotsa ho hasana ha optical tsamaisong ea nako e telele, fiber ea mofuta o le mong (SMF) e tlameha ho sebelisoa mojuleng ona. Sehlahisoa se entsoe ka sebopeho sa sebopeho, khokahano ea optical / motlakase le sebopeho sa tlhahlobo ea dijithale ho latela Tumellano ea Multi-Source ea QSFP28 (MSA). E etselitsoe ho kopana le maemo a thata ka ho fetisisa a ts'ebetso ea kantle ho kenyelletsa mocheso, mongobo le tšitiso ea EMI. Mojule o sebetsa ho tloha ho matla a le mong + 3.3V le lipontšo tsa taolo ea lefats'e ea LVCMOS / LVTTL tse kang Module Present, Reset, Interrupt le Low Power Mode li fumaneha ka li-module. Khokahano ea serial ea 2-wire e fumaneha ho romella le ho amohela matšoao a thata a taolo le ho fumana tlhaiso-leseling ea tlhahlobo ea dijithale. Liteishene ka bomong li ka rarolloa 'me likanale tse sa sebelisoeng li ka koaloa bakeng sa ho feto-fetoha ho hoholo ha moralo. JHAQ28C10C e entsoe ka sebopeho sa sebopeho, khokahano ea optical/electric le interface ea tlhahlobo ea dijithale ho latela Tumellano ea Multi-Source (MSA) ea QSFP28. E etselitsoe ho kopana le maemo a thata ka ho fetisisa a ts'ebetso ea kantle ho kenyelletsa mocheso, mongobo le tšitiso ea EMI. Mojule o fana ka ts'ebetso e phahameng haholo le kopanyo ea likarolo, e fumanehang ka sebopeho sa serial sa terata tse peli. • Absolute Maximum Ratings Parameter Symbol Min. Tloaelehileng Max. Unit Storage Mocheso TS -40 +85 °C Supply Voltage VCCT, R -0.5 4 V Relative Humidity RH 0 85 % • Tikoloho e Khothalletsoang ea Ts'ebetso: Parameter Symbol Min. Tloaelehileng Max. Unit Case e sebetsang Mocheso TC 0 +70 °C Supply Voltage VCCT, R +3.13 3.3 +3.47 V Supply Current ICC 1100 1500 mA Power Dissipation PD 5 W • Litšobotsi tsa Motlakase (TOP = 0 ho 70 °C, VCC3 7 ho 3. Parametha Letšoao la Min Type Max Unit Note Data Rate per Channel - 25.78125 Gbps 27.9525 Power Consumption - 2.7 3.5 W Supply Current Icc 0.8 1 A Control I/O Voltage-High VIH 2.0 Vcc V Control I/O Voltage-Low VIL 0 0.7 Skew TSK Inter-Channel Ps RESETL Duration 10 Us RESETL De-assert nako 100 ms Power On Time 100 ms Transmitter Single End Output Voltage Tolerance 0.3 Vcc V 1 Mokhoa o tloaelehileng Tolerance ea Voltage 15 mV Transmit Input Diff Voltage VI 150 1200 mV Transmit Input Diff 8 Input 1515 Data Impedance 1515 0 Data Impedance DDJ 0.3 UI Receiver e le 'Ngoe ea Phello ea Matla a Matla a Matla 0.3 4 V Rx Output Diff Voltage Vo 370 600 950 mV Rx Output Rise and Fall Voltage Tr/Tf 35 ps 1 Total Jitter TJ 0.3 UI Note 0.3 ~ 0.3 UIPtical = 0.3 UIPtical = 0.3 UIPtical 0 ho 70 °C, VCC = 3.0 ho 3.6 Volts) Parameter Symbol Min Typ Max Unit Ref. Transmitter Wavelength Kabelo L0 1264.5 1271 1277.5 nm L1 1284.5 1291 1297.5 nm L2 1304.5 1311 1317.5 nm L3 1324.5 1331 1331 1331 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335 1335:) 30 - - dB Total Average Launch Power PT -6 - 6.5 dBm Average Launch Power, each Lane -6 - 2.5 dBm Phapang ho Launch Power between any two Lanes (OMA) - - 3.5 dB TDP, each Lane TDP 2.2 dB Extinction Ratio ER Ratio 4 - - dB Transmitter Eye Mask Tlhaloso {X1, X2, X3, Y1, Y2, Y3} {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} Optical Return Loss Tolerance - - 20 dB Kakaretso ea Launch Power OFF Transmitter, Lane Poff e 'ngoe le e 'ngoe -30 Intens Noise RentBm -128 dB/HZ 1 Optical Return Loss Tolerance - - 12 dB Receiver Damage Threshold THd 3.3 dBm 1 Karolelano ea Matla ho Receiver Input, e 'ngoe le e 'ngoe Lane R -13.0 0 dBm RSSI Ho nepahala -2 2 dB Receiver Reflectance RdB -2iver Reflectance RdB -2i e 'ngoe le e 'ngoe - 3.5 dBm LOS De-Assert LOSD -15 dBm LOS Assert LOSA -25 dBm LOS Hysteresis LOSH 0.5 dB Tlhokomeliso 12dB Reflection • Diagnostic Monitoring Interface Ts'ebetso ea ho hlahloba tlhahlobo ea Digital e fumaneha ho tsohle QSFP28 LR4. Sesebelisoa sa serial sa 2-wire se fana ka mosebelisi ho ikopanya le mojule. Sebopeho sa mohopolo se bontšoa ka ho phalla. Sebaka sa mohopolo se hlophisitsoe ka tlase, leqephe le le leng, sebaka sa aterese sa li-byte tse 128 le maqephe a mangata a holimo a aterese. Sebopeho sena se lumella ho fihlella ka nako liaterese tse leqepheng le ka tlaase, tse kang Interrupt Flags and Monitors. Kenyelletso ea nako e fokolang ea nako, joalo ka tlhaiso-leseling ea serial ID le litlhophiso tsa threshold, lia fumaneha ka tšebetso ea Leqephe la Khetha. Aterese ea sehokelo e sebelisitsoeng ke A0xh mme e sebelisoa haholo bakeng sa data ea bohlokoa ea nako joalo ka ho ts'oaroa ha nako e le ho etsa hore ho baloe hanngoe bakeng sa data eohle e amanang le boemo ba tšitiso. Kamora tšitiso, ho netefalitsoe IntL, moamoheli a ka bala lebala la folakha ho tseba mocha le mofuta oa folakha. Page02 ke User EEPROM mme sebopeho sa eona se khethoa ke mosebelisi. Tlhaloso e qaqileng ea memori e tlase le page00.page03 mohopolo o ka holimo ka kopo, bona tokomane ea SFF-8436. • Nako ea Soft Control le Status Functions Parameter Symbol Max Unit Conditions Initialization Time t_init 2000 ms Nako ho tloha ho motlakase ho1, hot plug kapa ho phahama ha Reset ho fihlela mojule o sebetsa ka botlalo2 Reset Init Assert Time t_reset_init 2 μs A Reset e hlahisoa ke ho fokotseha. boemo ba nako e telele ho feta bonyane ba nako ea ho letsa ha molumo o teng ho ResetL pin. Serial Bus Hardware Ready Time t_serial 2000 ms Nako ho tloha power on1 ho fihlela module e araba phetiso ea data holim'a 2-wire serial bus Monitor Data ReadyTime t_data 2000 ms Nako ho tloha power on1 ho data ha e so lokisoe, bit 0 of Byte 2, deassted and IntL asserted Seta bocha Nako ea Assert t_reset 2000 ms Nako ho tloha pheletsong e holimo ho ResetL pin ho fihlela mojule o sebetsa ka botlalo2 LPMode Assert Time ton_LPMode 100 μs Nako ho tloha ho tiisetso ea LPMode (Vin:LPMode =Vih) ho fihlela motlakase oa motlakase o kena ka tlaase ho Power Level IntL Assert Time ton_IntL 200 ms Nako ho tloha ha boemo bo hlaha ho fihlela IntL Vout:IntL = Vol IntL Deassert Nako toff_IntL 500 μs toff_IntL 500 μs Nako ho tloha ka ho hlakileng ho bala3 ts'ebetso ea folakha e amanang le eona ho fihlela Vout:IntL = Voh. Sena se kenyelletsa linako tsa sejo sa Rx LOS, Tx Fault le likotoana tse ling tsa folakha. Rx LOS Assert Nako ton_los 100 ms Nako ho tloha ho Rx LOS state ho ea ho Rx LOS bit set le IntL asserted Flag Assert Time ton_flag 200 ms Nako ho tloha ha boemo bo hlahisa folakha ho isa ho sete ea folakha e amanang le IntL e tiisitse Mask Assert Nako ton_mask 100 ms Nako ho tloha maske bit set4 ho fihlela polelo e amanang le IntL e koetsoe Mask De-assert Nako toff_mask 100 ms Nako ho tloha mask bit clear4 ho fihlela ts'ebetso e amanang le IntlL e qalella ModSelL Assert Time ton_ModSelL 100 μs Nako ho tloha ho tiisetso ea ModSelL ho fihlela mojule o arabela phetiso ea data holim'a 2-wire serial bus ModSelL Deassert Time toff_Mod0 Time toff_Mod0 Time toff. ea ModSelL ho fihlela mojule o sa arabe phetiso ya data ho feta 2-wire serial bus Power_over-ride orPower-set Assert Time ton_Pdown 100 ms Nako ho tloha P_Down bit set 4 ho fihlela mojule tshebediso ya motlakase e kena tlase Power Level Power_over-ride kapa Power-set De. -assert Nako toff_Pdown 300 ms Nako ho tloha P_Down bit cleared4 ho fihlela module e sebetsa ka botlalo3 Hlokomela: 1. Power on e hlalosoa e le hang hang ha li-voltage tsa phepelo li fihla 'me li lula li le ho kapa ho feta boleng bo boletsoeng. 2. Ho sebetsa ka botlalo ho hlalosoa e le IntL e tiisitsoeng ka lebaka la data e seng e lokisitsoe, bit 0 byte 2 de-asserted. 3. E lekantsoe ho tloha pheletsong ea oache e oelang kamora ho emisa hanyane ea transaction. 4. E lekantsoe ho tloha pheletsong ea oache e oelang kamora ho emisa hanyane ea transaction. • Sets'oants'o sa Thibelo ea Transceiver • Sets'oants'o sa Kabelo sa Pin sa Nomoro ea Thibelo ea Sehokelo sa Boto ea Baamoheli le Nam • Tlhaloso ea Pin Logic Letshwao la Lebitso/Tlhaloso Ref. 1 GND Ground 1 2 CML-I Tx2n Transmitter Inverted Data Input 3 CML-I Tx2p Transmitter Non-Inverted Data output 4 GND Ground 1 5 CML-I Tx4n Transmitter Inverted Data Output 6 CML-I Tx4p Transmitter Non-Inverted 7 Data Sebaka sa 18 LVTTL-I ModSelL Module Select 9 LVTTL-I ResetL Module Reset 10 VccRx +3.3V Power Supply Receiver 2 11 LVCMOS-I/O SCL 2-Wire Serial Interface Clock 12 LVCMOS-I/O SDA 2-Wire Serial Interface Data 13 GND14 Ground 1 CML-O Rx3p Moamoheli oa Phatlalatso ea Inverted Data Output 15 CML-O Rx3n Receiver Sephetho se sa Keneng 16 GND Ground 1 17 CML-O Rx1p Receiver Inverted Data Output 18 CML-O Rx1n Receiver Non-Inverted Data Output 19 GND Ground 1 20 GND Inverted CML Receiver CML Lintlha Sehlahisoa 22 CML-O Rx2p Moamoheli Sephetho sa data se sa Keneng 23 GND Ground 1 24 CML-O Rx4n Receiver Inverted Data Output 25 CML-O Rx4p Receiver Sehlahisoa sa Lintlha tse sa Keneng 26 GND Ground 1 TL-8 PredP LVT 1 TL-8 Modul LVT LVTTL-O IntL Interrupt 29 VccTx +3.3V Power Supply Transmitter 2 30 Vcc1 + 3.3V Power Supply 2 31 LVTTL-I LPMode Low Power Mode 32 GND Ground 1 33 CML-I Tx3p Transmitter Inverted Data Output3x300 CMLnItter3x Output T3x -Data e Inverted Output 35 GND Ground 1 36 CML-I Tx1p Transmitter Inverted Data Output 37 CML-I Tx1n Transmitter Non-Inverted Data Output 38 GND Ground 1 Lintlha: GND ke letšoao bakeng sa single le phepelo(matla) a tloaelehileng bakeng sa modules QSFP28, Tsohle li tloaelehile ka har'a mojule oa QSFP28 le li-voltages tsohle tsa module li boletsoe ho bokhoni bona bo boletsoeng ka tsela e 'ngoe. Hokela tsena ka ho toba ho moamoheli boto letšoao common fatše sefofane. Sehlahisoa sa Laser se koetsoe ho TDIS >2.0V kapa se butsoe, se lumelletsoe ho TDIS
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01
China Theko e tlaase Layer 3 Fiber Ethernet Switch - 2 * 10/100/1000TX - 1 * 1000X SFP Slot | Fiber Media Converter JHA-G12...
2016-01-08
Selelekela letoto la JHA-G12 le lumellana le litekanyetso tsa IEEE802.3, E etselitsoe ho fetolela lets'oao la data lipakeng tsa 1000Base-FX le 10/100/1000Base-TX Ethernet. Sesebelisoa sa media se hoketsoe lipakeng tsa thapo ea faeba le thapo e sothehileng, eketsa marang-rang a hau a Ethernet ho feta moeli oa limithara tse 100 o behiloeng ke thapo ea koporo. Moetso ona oa converter o ka sebelisoa e le mojule oa li-slide-in ho 14-slot 19" Rack-Mount Chassis. Converter e pepeneneng ho liprothokholo tsohle, e ka sebelisoa libakeng tsohle joalo ka Fiber to The Home, Fiber to the Business kapa Fiber to The. Likarolo tsa Curb • Ho lumellana le IEEE 802.3, IEEE 802.3u, IEEE 802.3X, IEEE 802.3u 802.1Q, 10Base-TX, 100Base-TX, 1000Base-TX, 1000Base-FX litekanyetso • E tšehetsa litekanyetso tsa TCP / IP, PPPOE, DHCP, ICMP, NAT -duplex amohela Backpressure • Likou tsa motlakase li tšehetsa lipuisano tse ikemetseng tshebetso, ka tsela e iketsang e lokisa maemo a phetiso le phetiso • Maemakepe a tshehetsa Auto-MDI / MDIX auto-flip. tlhahiso 5V ~ 50Hz 2A • Moralo oa karete, ho thusa ho lokisa le ho hlahloba lisebelisoa tsa nako e tlang moralo oa phepelo ea motlakase, o bonolo ho o lokisa ka morao. • Litharollo tse ikhethileng tsa IC, mocheso oa chip o tlase, ho tlosa sistimi e pholileng, taolo ea phallo le ho fokotsa lifefo tsa phatlalatso. • Module oa boleng bo phahameng o kopantsoeng oa photovoltaic o fana ka thepa e ntle ea optical le thepa ea motlakase ho etsa bonnete ba hore phetiso e ka tšeptjoang, bophelo bo bolelele. • Sefa sa khaso ea Operating Mechanism, aterese ea ho ithuta ka boits'oaro le tšobotsi ea ho inchafatsa le ho boloka le ho fetisa. • E ts'ehetsa phetiso ea pakete ea data ea 1916 byte e telele. • Sehokelo se sieo ho fana ka tlhahlobo ea hole, sebopeho sa motlakase le tlhahlobo ea khokahanyo ea optical port link, phetisetso ea data e matla, duplex e felletseng / halofo ea duplex, khanya ea lebelo, ho kenya habonolo le tlhokomelo ea morao-rao. • Matla a tlaase a matla a tlase ho 2.5W (Input: AC110 ~ 260V), mocheso o tlaase, ts'ebetso e tsitsitseng ka nako e telele. Dimension Specification Protocol Standard IEEE802.3, IEEE802.3u, IEEE802.3z, IEEE802.3ab, IEEE802.1q, IEEE802.1p QoS,IEEE802.1d Spanning Tree Wavelength 850nm/15nm/15 Digital Transmission/15 100mMultimode, Single/Dual-fiber 550m Sing Mode, Single-fiber 20/40/60/80/100Km Sing Mode, Dual-fiber 20/40/60/80/100/120Km Ethernet Port RJ45 STPs / Connection STPs /Cat5e Cooper Cable Fiber Multimode ea Port, Dual-fiber SC/ST/FC (Diameter 50/125, 62.5 / 125μm)Mokhoa o le Mong, Fiber e le Mong, SC/ST/FC (Diameter 9/125μm) Mokhoa o le Mong, Dual-fiber SC/FC (diameter 9 /125μm ) Mokhoa oa Phetoho ea Sebopeho: Phetoho ea mecha ea litaba, boloka le ho ea pele / ho otloloha inMAC Eketsa: 1 K Cache: 1 Mbit Boemo bo feletseng ba duplex: taolo ea phallo, halofo-duplex: backpressure mode Store le Forward: 9.6us, Straight In: 0.9us BER:
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Boleng bo Botle ba FTTH - 8*FE Ethernet interface+1 EPON interface EPON ONU JHA700-E108F - JHA
2016-01-08
Kakaretso ea JHA700-E108F letoto la EPON ONU le etselitsoe ts'ebeliso ea FTTB/FTTO. Letoto la JHA700-E108F le na le likou tse 8 10/100BASE-T, boema-kepe bo le bong ba PON. Li tšehetsa 1000Base-PX20+ standard e nang le 1:64 boholo ba ho arohana ha tekanyo le sebaka sa 20km. Ba sebetsa 'moho le EPON OLT ba ka hlokomela sebopeho sa marang-rang se feto-fetohang le tlhokomelo le ho fana ka litharollo tse felletseng tsa FTTx. Letoto la JHA700-E108F le ts'ehetsa mokhoa oa phepelo ea motlakase oa POE, o loketseng ho kengoa feela; Ka nako e ts'oanang, e ts'ehetsa taolo ea matla a bekapo ea betri ea BBU, tjhaja e kholo ea hajoale e potlakileng, tefiso e fetang tekano le tefiso e phaphametseng. Ha marang-rang a phepelo ea motlakase a kantle a robeha, matla a betri a ka sebetsa. E etselitsoe chipset ea ZTE xPON e thehiloeng. The chipset suport GPON/EPON/P2P mode; lumellana le G.984, G.983 standards, good in compatible in xPON. JHA700-E108F Series ONU e na le bokhoni ba ho fetisa bo phahameng ho netefatsa phihlelo e babatsehang ka Inthanete le litšebeletso tsa video tsa HD. Ka hona, JHA700-E108F Series ONU e fana ka tharollo e phethahetseng ea ho qetela le bokhoni ba ts'ehetso ba ts'ebeletso ea bokamoso bakeng sa phepelo ea FTTH. E na le tšebelisano e ntle ea motho oa boraro ho sebetsa le OLT ea mokha oa boraro, joalo ka Huawei/ZTE/Fiberhome/Alcatel-Lucen. Likarolo ♦ E lumellana ka botlalo le IEEE802.3ah ♦ Tšehetsa moedi oa sekhahla o thehiloeng boema-kepeng le taolo ea bandwidth; ♦ Ho fihlela ho 20KM phetisetso Distance ♦ Support Dynamic Bandwidth Allocation (DBA) ♦ Tšehetsa ONU auto-discovery/Ho lemoha Link/ho ntlafatsa software; ♦ Ts'ehetso ea ts'ebetso ea alamo ea ho tima, e bonolo bakeng sa ho lemoha bothata ba lihokelo ♦ Ts'ehetso ea ho hasoa ha sefefo sa sefefo ♦ Tšehetsa ACL ho lokisa filthara ea pakete ea data ka mokhoa o feto-fetohang ♦ Moqapi o khethehileng bakeng sa thibelo ea ho senyeha ha tsamaiso ho boloka tsamaiso e tsitsitseng ♦ Ts'ehetso ea lisebelisoa tsa marang-rang ♦ Tsamaiso ea marang-rang ea EMS e thehiloeng ho SNMP, e bonolo bakeng sa tlhokomelo Sebopeho sa sehlahisoa le litlhaloso tsa LED Tlhaloso ea Letšoao 1 LAN1-8 LAN boemo ba boemakepe Bula: Khokahano ea Ethernet e tloaelehile;Ho panya: Lintlha li fetisoa ka koung ea Ethernet;E tima: Khokahano ea Ethernet ha e so thehoe; 2 LOS EPON matshwao a mahlo a Buletswe: Matla a optical a tlase ho feta kutlo ya moamohedi ;O tima: Optical ka tsela e tlwaelehileng 3 PON ONU Register Ho: Katleho ya ho ingodisa ho OLT;Ho panya: Ha o ntse o ingodisa ho OLT;O tima: Ha o ntse o ingodisa ho OLT; 4 PWR Boemo ba Motlakase Bula: The ONT e butswe;Tima: The ONT ke Matla a tima; Specification Tee Parameters Specification Interface PON Port 1 EPON optical interface Kopana le 1000BASE-PX20+ standard Symmetric 1.25Gbps upstream/downstream SC single-mode fiber split ratio: 1:64 Transmission distance 20KM Ethernet Port(LAN) 8*FE Auto-negotiation Duple RJ4x5 ports / Half-Duplex Auto-MDI/MDI-XTransmission Distance 100 Meter Power Supply Port 12V DC phepelo ea matla Management Network Management Support IEEE802.3 QAM, ONU e ka laoloa u le hole ke OLTSupport Remote management ka SNMP le TelnetLocal management Management Function Status monitor, Configuration management, Alarm management , Tsamaiso ea logong. (Ha ho tsamaiso boema-kepeng bo bong le bo bong ba Ethernet) Litlhaloso tsa Tikoloho Shell Plastic casing Power External 12V 0.5A AC/DC adapter ea phepelo ea motlakaseMotlakase Tšebeliso ea matla:
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