Lifektheri tsa Bafani ba Faeba ea China kaofela - 40Gb/s QSFP+ ER4, 40km 1310nm SFP Transceiver JHA-QC40 – JHA
Mafektheri a Barekisi ba Faeba ya China kaofela - 40Gb/s QSFP+ ER4, 40km 1310nm SFP Transceiver JHA-QC40 – JHA Detail:
Likaroloana:
◊ Moralo oa litsela tse 4 tsa CWDM MUX/DEMUX
◊ Ho fihla ho 11.2Gbps ka bophara ba kanale
◊ Aggregate bandwidth ea > 40Gbps
◊ Sehokelo sa Duplex LC
◊ E lumellana le 40G Ethernet IEEE802.3ba le 40GBASE-ER4 Standard
◊ QSFP MSA e lumellana
◊ Sesebelisoa sa lifoto tsa APD
◊ Ho fihla ho 40 km phetiso
◊ E tsamaellana le litefiso tsa data tsa QDR/DDR Infiniband
◊ Motlakase o le mong oa +3.3V o sebetsa
◊ Mesebetsi ea tlhahlobo ea dijithale e hahiloeng kahare
◊ Mocheso o fapaneng 0°C ho isa ho 70°C
◊ Karolo e lumellanang ea RoHS
Lisebelisoa:
◊ Rack ho rack
◊ Litsi tsa data li-Switch le li-routers
◊ Marang-rang a Metro
◊ Li-switches le li-routers
◊ 40G BASE-ER4 Ethernet Lihokelo
Tlhaloso:
JHA-QC40 ke mojule oa transceiver o etselitsoeng lits'ebetso tsa puisano tsa 40km tsa optical. Moqapi o lumellana le 40GBASE-ER4 ea IEEE P802.3ba e tloaelehileng. Mojule o fetola liteishene tsa lisebelisoa tsa 4 (ch) tsa data ea motlakase ea 10Gb / s ho 4 CWDM optical signals, 'me e li ngatafatsa ka mocha o le mong bakeng sa 40Gb / s optical transmission. Ka lehlakoreng le leng, ka lehlakoreng la moamoheli, mojule optically de-multiplexes ho kenya 40Gb / s ho li-signals tsa 4 CWDM, ebe o li fetolela ho data ea motlakase ea tlhahiso ea 4.
Maqhubu a bohareng a likanale tsa 4 CWDM ke 1271, 1291, 1311 le 1331 nm e le litho tsa marang-rang a marang-rang a CWDM a hlalositsoeng ho ITU-T G694.2. 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 QSFP Multi-Source (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 maemo a phahameng a moralo.
JHA-QC40 e entsoe ka sebopeho sa sebopeho, khokahano ea optical / motlakase le segokanyimmediamentsi sa dijithale tsa tlhahlobo ho latela Tumellano ea Multi-Source (MSA) ea QSFP. 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.
•Feletseng Maximum Ratings
Paramethara | Letšoao | Min. | E tloaelehileng | Max. | Yuniti |
Mocheso oa polokelo | TS | -40 |
| +85 | °C |
Phepelo ea Voltage | VCCT, R | -0.5 |
| 4 | V |
Mongobo o Batlang | RH | 0 |
| 85 | % |
•E khothalelitsoeTikoloho ya Tshebetso:
Paramethara | Letšoao | Min. | E tloaelehileng | Max. | Yuniti |
Case operation Temperature | TC | 0 |
| +70 | °C |
Phepelo ea Voltage | VCCT, R | +3,13 | 3.3 | +3,47 | V |
Phepelo ea Hona Joale | ICC |
|
| 1000 | mA |
Ho felloa ke Matla | PD |
|
| 3.5 | IN |
•Litšobotsi tsa Motlakase(TTSOELA = 0 ho isa ho 70 °C, VCC= 3.13 ho 3.47 Volts
Paramethara | Letšoao | Min | Mofuta | Max | Yuniti | Hlokomela |
Sekhahla sa Lintlha ka Channel |
| - | 10.3125 | 11.2 | Gbps |
|
Tšebeliso ea Matla |
| - | 2.5 | 3.5 | IN |
|
Phepelo ea Hona Joale | Icc |
| 0.75 | 1.0 | A |
|
Laola I/O Voltage-High | HIV | 2.0 |
| Vcc | V |
|
Laola I/O Voltage-Low | THATO | 0 |
| 0.7 | V |
|
Inter-Channel Skew | TSK |
|
| 150 | Pes |
|
RESETL Nako |
|
| 10 |
| Rona |
|
RESETL Nako ea ho hlakisa |
|
|
| 100 | Mof |
|
Matla ka Nako |
|
|
| 100 | Mof |
|
Phetiso | ||||||
Mamello ea Mamello ea Voltage e le 'Ngoe |
| 0.3 |
| 4 | V | 1 |
Mokhoa o tloaelehileng Mamello ea Voltage |
| 15 |
|
| mV |
|
Fetisetsa Phano ea Matla a Kenyellelitsoeng | RESE | 150 |
| 1200 | mV |
|
Fetisetsa Input Diff Impedance | POTSO | 85 | 100 | 115 |
|
|
Jitter e Itšetlehileng ka Lintlha | DDJ |
| 0.3 |
| UI |
|
Moamoheli | ||||||
Mamello ea Mamello ea Voltage e le 'Ngoe |
| 0.3 |
| 4 | V |
|
Rx Output Diff Voltage | Vo | 370 | 600 | 950 | mV |
|
Rx Output Rise and Fall Voltage | Tr/Tf |
|
| 35 | ps | 1 |
Kakaretso ea Jitter | TJ |
| 0.3 |
| UI |
|
Hlokomela:
- 20~80%
•Optical Parameters(TOP = 0 ho isa ho 70°C, VCC = 3.0 ho isa ho 3.6 Volts)
Paramethara | Letšoao | Min | Mofuta | Max | Yuniti | Ref. |
Phetiso | ||||||
Kabelo ea Wavelength | 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 | 1337.5 | nm |
| |
Side-mode Suppression Ratio | SMSR | 30 | - | - | dB |
|
Kakaretso ea Kakaretso ea Matla a ho Qala | PT | - | - | 8.3 | dBm |
|
Karolelano ea Matla a Launch, Lane ka 'ngoe |
| -3 | - | 5 | dBm |
|
TDP, Lane ka 'ngoe | TDP |
|
| 2.3 | dB |
|
Karolelano ea Phello | KE | 3.5 | 6.0 |
| dB | |
Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} |
| {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} |
| |||
Mamello ea Tahlehelo ea Optical Return |
| - | - | 20 | dB |
|
Karolelano ea ho Launch OFF Transmitter, Lane ka 'ngoe | Phofo |
|
| -30 | dBm |
|
Lerata le Matla a Batlang | Hape |
|
| -128 | dB/HZ | 1 |
Mamello ea Tahlehelo ea Optical Return |
| - | - | 12 | dB |
|
Moamoheli | ||||||
Tšenyo Moetla | THd | 3 |
|
| dBm | 1 |
Karolelano ea Matla ho Kenyelletso ea Moamoheli, Lane ka 'ngoe | R | -mashome a mabeli a motso o le mong |
| -6 | dBm |
|
Fumana Motlakase oa 3 dB kaholimo ho Khaoha Maqhubu, Lane ka 'ngoe |
|
|
| 12.3 | GHz |
|
RSSI Ho Nepaha |
| -2 |
| 2 | dB |
|
Reflectance ea moamoheli | Rrx |
|
| -26 | dB |
|
Receiver Power (OMA), Lane ka 'ngoe |
| - | - | 3.5 | dBm |
|
Fumana Motlakase oa 3 dB ka holimo ho Cutoff Frequency, Lane ka 'ngoe |
|
|
| 12.3 | GHz |
|
LOS De-Assert | MOTSAMAID |
|
| -25 | dBm |
|
Tsebo ea LOS | MOTSAMAIA | -35 |
|
| dBm |
|
LOS Hysteresis | MOTSAMAIH | 0.5 |
|
| dB |
|
Hlokomela
- 12dB Pontšo
•Diagnostic Monitoring Interface
Ts'ebetso ea ho lekola tlhahlobo ea dijithale e fumaneha ho tsohle QSFP+ ER4. 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 batho ho fumana 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 ts'ebetso ea Khetho ea Leqephe. Aterese ea interface e sebelisitsoeng ke A0xh 'me e sebelisoa haholo-holo bakeng sa data ea bohlokoa ea nako e kang ho ts'oaroa ha nakoana e le ho nolofalletsa ho bala hanngoe bakeng sa lintlha tsohle tse amanang le boemo ba tšitiso. Kamora tšitiso, ho netefalitsoe IntL, moamoheli a ka bala lebala la folakha ho tseba mocha le mofuta oa folakha.
EEPROM Serial ID Memory Contents (Ah)
Lintlha Aterese | Bolelele | Lebitso la Bolelele | Tlhaloso le Litaba | |
Libaka tsa ID tsa Motheo | ||||
128 | 1 | Sekhetho | Mofuta oa Sekhetho oa serial Module(D=QSFP+) | |
129 | 1 | Ext. Sekhetho | Identifier E Ekelitsoeng ea Serial Module(90=2.5W) | |
130 | 1 | Sehokedi | Khoutu ea mofuta oa sehokelo(7=LC) | |
131-138 | 8 | Ho latela lintlha | Khoutu ea ho tsamaellana le elektroniki kapa ho lumellana ha optical(40GBASE-LR4) | |
139 | 1 | Khouto | Khoutu ea seriale khouto algorithm(5=64B66B) | |
140 | 1 | BR, Lebitso | Sekhahla sa biti ka lebitso, likarolo tsa 100 MBits/s(6C=108) | |
141 | 1 | Litefiso tse atolositsoeng, khetha Tumellano | Li-tag bakeng sa ho lumellana le litekanyetso tse atolositsoeng | |
142 | 1 | Bolelele(SMF) | Bolelele ba sehokelo bo tšehelitsoe bakeng sa fiber ea SMF ka km (28=40KM) | |
143 | 1 | Length(OM3 50um) | Bolelele ba lihokelo bo tšehelitsoe bakeng sa EBW 50/125um fiber(OM3), likarolo tsa 2m | |
144 | 1 | Length(OM2 50um) | Bolelele ba lihokelo bo tšehelitsoe bakeng sa 50/125um fiber(OM2), likarolo tsa 1m | |
145 | 1 | Length(OM1 62.5um) | Bolelele ba lihokelo bo tšehetsoeng bakeng sa 62.5 / 125um fiber (OM1), li-unit tsa 1m | |
146 | 1 | Bolelele(Koporo) | Bolelele ba khokahanyo ea thapo ea koporo kapa e sebetsang, e kopanya bolelele ba 1m Link e tšehelitsoeng bakeng sa 50/125um fiber (OM4), likarolo tsa 2m ha Byte 147 e phatlalatsa 850nm VCSEL joalokaha ho hlalositsoe ho Lethathamo la 37. | |
147 | 1 | Theknoloji ea lisebelisoa | Theknoloji ea lisebelisoa | |
148-163 | 16 | Lebitso la morekisi | QSFP+ lebitso la morekisi: TIBTRONIX (ASCII) | |
164 | 1 | E atolositsoeng Module | Likhoutu tse atolositsoeng tsa Module bakeng sa InfiniBand | |
165-167 | 3 | Morekisi YES | QSFP+ morekisi ID ea k'hamphani ea IEEE(000840) | |
168-183 | 16 | Morekisi PN | Nomoro ea karolo: JHA-QC40 (ASCII) | |
184-185 | 2 | Morekisi rev | Boemo ba ntlafatso bakeng sa karolo ea nomoro e fanoeng ke morekisi (ASCII) (X1) | |
186-187 | 2 | Bolelele ba maqhubu kapa thapo ea Koporo Attenuation | Leqhubu la leqhubu la laser (wavelength=boleng/20 ho nm) kapa ho fokotsa thapo ea koporo ho dB ho 2.5GHz (Adrs 186) le 5.0GHz (Adrs 187) (65A4=1301) | |
188-189 | 2 | Mamello ya wavelength |
Leqhubu le tiisitsoeng la laser wavelength(+/- boleng) ho tloha ka lebitso bolelele ba maqhubu. (wavelength Tol.=boleng/200 ho nm) (1C84=36.5) | |
190 | 1 | Mocheso o phahameng oa mocheso. | Boholo ba mocheso oa likhato tsa C (70) | |
191 | 1 | CC_BASE | Sheba khoutu bakeng sa likarolo tsa ID tsa motheo (liaterese 128-190) | |
Libaka tsa ID tse atolositsoeng | ||||
192-195 | 4 | Dikgetho | Rate Select, TX Disable, Tx Fault, LOS, Litemoso matšoao a: Mocheso, VCC, RX, matla, TX Bias | |
196-211 | 16 | Morekisi SN | Nomoro ea serial e fanoe ke morekisi (ASCII) | |
212-219 | 8 | Khoutu ea Letsatsi | Khoutu ea letsatsi la tlhahiso ea morekisi | |
220 | 1 | Mofuta oa Tlhokomelo ea Tlhahlobo | E bontša hore na ke mefuta efe ea tlhahlobo ea tlhahlobo e kengoang tšebetsong (haeba e teng) Mojuleng. Bit 1, 0 Behiloe (8=Karolelano ea Matla) | |
221 | 1 | Likhetho tse ntlafalitsoeng | E bontša hore na ke likarolo life tse ntlafalitsoeng tse kentsoeng tšebetsong Mojuleng. | |
222 | 1 | Reserved | ||
223 | 1 | CC_EXT | Sheba khoutu bakeng sa Libaka tse Atolositsoeng tsa ID (liaterese 192-222) | |
Libaka tsa ID tse khethehileng tsa barekisi | ||||
224-255 | 32 | Morekisi E Specific EEPROM |
•Nako bakeng sa Taolo e Bonolo le Mesebetsi ea Boemo
Paramethara | Letšoao | Max | Yuniti | Maemo |
Nako ea ho Qala | t_init | 2000 | Mof | Nako ho tloha motlakase ho1, plug e chesang kapa moeli o nyolohang oa Reset ho fihlela mojule o sebetsa ka botlalo2 |
Seta bocha Nako ea Assert ea Init | t_reset_init | 2 | μs | Reset e hlahisoa ke boemo bo tlase bo bolelele ho feta bonyane ba nako ea ho letsa ha molumo o teng ho phini ea ResetL. |
Seri Bus Hardware Ready Nako | t_serial | 2000 | Mof | Nako ho tloha ka matla ho 1 ho fihlela mojule o arabela phetiso ea data holim'a bese ea 2-wire serial |
Hlahloba Boitsebiso bo LokisitsoeNako | t_data | 2000 | Mof | Nako ho tloha ho matla ho ea pele ho data e sa lokisoa, hanyane 0 ea Byte 2, e lahliloe mme IntL e tiisitsoe |
Seta bocha Nako ea Assert | t_reset | 2000 | Mof | Nako ho tloha moeling o nyolohang holim'a pinana ea ResetL ho fihlela module e sebetsa ka botlalo2 |
LPMode Assert Nako | ton_LPMode | 100 | μs | Nako ho tloha ho netefatso ea LPMode (Vin: LPMode = Vih) ho fihlela tšebeliso ea matla ea module e kena maemong a tlase a Matla. |
Nako ea IntL Assert | ton_IntL | 200 | Mof | Nako ho tloha ho hlaha ha boemo bo bakang IntL ho fihlela Vout:IntL = Moq |
IntL Dessert 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 | Mof | Nako ho tloha seterekeng sa Rx LOS ho isa ho Rx LOS bit set mme IntL e tiisitse |
Folakha Assert Nako | thane_folakha | 200 | Mof | Nako ea ho tloha ha boemo bo hlahisa folakha ho isa ho sete ea lifolakha tse amanang le IntL e tiisitse |
Mask Assert Nako | ton_mask | 100 | Mof | Nako ho tloha mask bit set4 ho fihlela polelo e amanang le IntL e thibetsoe |
Mask De-Asserted Nako | toff_mask | 100 | Mof | Nako ho tloha maske bit e hlakotsoe4 ho fihlela ts'ebetso e amanang le IntlL e qala hape |
ModSelL Assert Nako | ton_ModSelL | 100 | μs | Nako ho tloha ho netefatso ea ModSelL ho fihlela mojule o arabela phetiso ea data holim'a bese ea 2-wire serial |
ModSelL Dessert Nako | toff_ModSelL | 100 | μs | Nako ea ho tloha ha ModSelL e felloa ke matla ho fihlela mojule o sa arabe phetiso ea data holim'a bese ea 2-wire serial. |
Power_over-ride kapaPower-set Assert Nako | ton_Tdown | 100 | Mof | Nako ho tloha ho P_Down bit set 4 ho fihlela mojule oa motlakase o kena maemong a tlase a Matla |
Power_over-ride kapa Power-set De-assert Nako | toff_Tdown | 300 | Mof | 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 motlakase oa phepelo o fihla 'me o lula o 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.
•Setšoantšo sa Thibelo ea Transceiver
•Kabelo ea Pin
Setšoantšo sa Host Board Connector Block Pin Numbers le Lebitso
•PinTlhaloso
Pin | Maikutlo | Letšoao | Lebitso/Tlhaloso | Ref. |
1 |
| GND | Fatše | 1 |
2 | CML-I | Tx2n | Phetiso e Felletseng ea Boitsebiso |
|
3 | CML-I | Tx2 leq | Sephetho sa Transmitter Non-Inverted Data |
|
4 |
| GND | Fatše | 1 |
5 | CML-I | Tx4n | Sehlahisoa sa Transmitter Inverted Data |
|
6 | CML-I | Tx4p | Sehlahisoa sa Transmitter e sa Fetohang |
|
7 |
| GND | Fatše | 1 |
8 | LVTTL-I | ModSelL | Khetha Mojule |
|
9 | LVTTL-I | KhutlisaL | Reset Module |
|
10 |
| VccRx | +3.3V Moamoheli oa Phepelo ea Matla | 2 |
11 | LVCMOS-I/O | SCL | 2-Wire Serial Interface Clock |
|
12 | LVCMOS-I/O | SDA | 2-Wire Serial Interface Data |
|
13 |
| GND | Fatše | 1 |
14 | CML-O | Rx3p | Sehlahisoa sa Moamoheli sa Inverted Data |
|
15 | CML-O | Rx3n | Sehlahisoa sa Data se sa Fetohang se Fumanang |
|
16 |
| GND | Fatše | 1 |
17 | CML-O | Rx1p | Sehlahisoa sa Moamoheli sa Inverted Data |
|
18 | CML-O | Rx1n | Sehlahisoa sa Data se sa Fetohang se Fumanang |
|
19 |
| GND | Fatše | 1 |
20 |
| GND | Fatše | 1 |
mashome a mabeli a motso o le mong | CML-O | Rx2n | Sehlahisoa sa Moamoheli sa Inverted Data |
|
mashome a mabeli le metso e 'meli | CML-O | Rx2p | Sehlahisoa sa Data se sa Fetohang se Fumanang |
|
mashome a mabeli a metso e meraro |
| GND | Fatše | 1 |
mashome a mabeli le metso e mene | CML-O | Rx4n | Sehlahisoa sa Moamoheli sa Inverted Data |
|
25 | CML-O | Rx4p | Sehlahisoa sa Data se sa Fetohang se Fumanang |
|
26 |
| GND | Fatše | 1 |
27 | LVTTL-O | ModPrsL | Module Present |
|
28 | LVTTL-O | IntL | Khaotsa |
|
29 |
| VccTx | +3.3V Phepelo ea Phepelo ea Matla | 2 |
30 |
| Vcc1 | +3.3V Phepelo ea Matla | 2 |
31 | LVTTL-I | LPMode | Mokhoa o tlase oa Matla |
|
32 |
| GND | Fatše | 1 |
33 | CML-I | Tx 3 leq | Sehlahisoa sa Transmitter Inverted Data |
|
34 | CML-I | Tx3n | Sehlahisoa sa Transmitter e sa Fetohang |
|
35 |
| GND | Fatše | 1 |
36 | CML-I | Tx1p | Sehlahisoa sa Transmitter Inverted Data |
|
37 | CML-I | Tx1n | Sehlahisoa sa Transmitter e sa Fetohang |
|
38 |
| GND | Fatše | 1 |
Lintlha:
- GND ke lets'oao bakeng sa single le phepelo (matla) a tloaelehileng bakeng sa li-module tsa QSFP, Tsohle li tloaelehile ka har'a mojule oa QSFP mme li-voltages tsohle tsa module li bonts'itsoe 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
- VccRx, Vcc1 le VccTx ke bafani ba motlakase ba amohelang le ba fetisang matla 'me ba tla sebelisoa ka nako e le ngoe. E khothalelitsoeng ho sefa phepelo ea matla a boto e bontšitsoeng ka tlase. VccRx, Vcc1 le VccTx li ka kopanngoa ka hare ho mojule oa transceiver oa QSFP ka motsoako ofe kapa ofe. Lithako tsa sehokelo li lekantsoe ka ngoe bakeng sa boholo ba hajoale ba 500mA.
•E khothalelitsoeng Potoloho
•Mechanical Dimensions
Litšoantšo tsa lintlha tsa sehlahisoa:
Tataiso e Amanang ea Sehlahisoa:
Re ikemiselitse ho utloisisa ho senyeha ha boleng bo phahameng ka tlhahiso le ho fana ka litšebeletso tse ntle ho bareki ba malapeng le ba mose ho maoatle ka pelo eohle bakeng sa Wholesale China fiber optic Suppliers Factories - 40Gb/s QSFP+ ER4, 40km 1310nm SFP Transceiver JHA-QC40 - JHA , Sehlahisoa se tla fana ka lefatšeng ka bophara, tse kang: Greece, Lithuania, moldova, Our tenet ke botšepehi pele, boleng . Re na le tšepo ea ho u fa litšebeletso tse ntle haholo le lihlahisoa tse ntle. Re tšepa ka tieo hore re ka theha tšebelisano-'moho ea khoebo le uena nakong e tlang!
Ka Donna ho tsoa Puerto Rico - 2017.08.21 14:13
Lihlahisoa tsa k'hamphani li ka fihlela litlhoko tsa rona tse fapaneng, 'me theko e theko e tlaase, ea bohlokoa ke hore boleng le bona bo monate haholo.
Ka Cornelia ho tsoa Austria - 2018.09.29 17:23