Mbali ♦ Kuthandizira 2 1000Base-X SFP slot ndi 16 10/100Base-T(X) doko la Efaneti. ♦ Thandizo la G.8032(ERPS), IEEE802.3, IEEE802.3u, IEEE802.3z, IEEE802.3x, IEEE802.3ad, IEEE802.3ab, IEEE802.1p, IEEE802.80G2. IPv4/IPv6 patsogolo. ♦ MTBF: 100000 Maola. ♦ DC10-58V redundancy mphamvu, reverse polarity chitetezo. ♦ Mapangidwe a Industrial 4, -40-85 ° C kutentha kwa ntchito. ♦ Anti-static: 8KV-15KV. ♦ IP40 idavotera nyumba ya aluminium alloy, DIN-Rail yokwera. ♦ Lipoti la Mayeso: CCC, RoHS, FC, CE, ISO. Chiyambi Chidachi ndi 2 * 1000 Base-X, 16 * 10/100Base-T Managed Industrial Ethernet fast switch, POE mwasankha, kudzera mu mawonekedwe oziziritsa mafani, kutentha kwamitundu yosiyanasiyana yogwirira ntchito, chitetezo chapamwamba ndi matekinoloje ena, amapereka / kutentha pang'ono, chitetezo cha mphezi ndi zina zabwino kwambiri zamafakitale, ndikusintha kophatikizika, chitetezo ndi ma protocol osiyanasiyana olemera, omwe amathandizidwa nthawi imodzi The public Ethernet multi ring protection technology (ERPS) yathandizira kwambiri kusinthika kwa maukonde ndikuwonjezera kudalirika ndi chitetezo chamakampani. Itha kukwaniritsa zofunikira pakutumiza njanji, mzinda wotetezeka, mayendedwe anzeru, kuyang'anira panja ndi malo ena ovuta. Dimension Order Information Model No. Kufotokozera kwa Katundu JHA-MIGS2F16 Managed Industrial Ethernet Switch, 2 1000Base-X SFP Slot ndi 16 10/100Base-T(X), DIN-Rail, DC10-58V, -40-85°C Kutentha kwa Ntchito Magetsi: DC24V DIN-Rail Power Supply kapena Adapter ya Mphamvu ndizosankha.

Fiber-64Voice +2FE Multiplexer JHA-P64FE02 Mwachidule Chipangizochi chimapereka foni ya 1-64Channel, 2Channel 10M/100M Efaneti mawonekedwe (Waya Speed ​​100M)，2Channel Efaneti mawonekedwe ndi masinthidwe mawonekedwe, angathe kuthandizira VLAN. Makina onsewa amagwira ntchito modalirika komanso mokhazikika ndikugwiritsa ntchito mphamvu zochepa, kuphatikiza kwakukulu, kukula kochepa komanso kukhazikitsa kosavuta ndi kukonza. Chithunzi cha Inchi 19 Mawonekedwe amtundu Wotengera kukopera kwanu kwa IC Voice port imathandizira FXO ndi FXS port,Support FXO/FXS, Magnet telefoni Interface, FXO port docking yokhala ndi switchboard yoyendetsedwa ndi pulogalamu, doko la FXS lolumikizidwa ndi foni ya wogwiritsa ntchito; 1 ~ 64 njira yofikira mawu, mawonekedwe a Voice FXO / FXS, chithandizo cha woyimbira foni / kubweza polarity / ntchito ya fax; Thandizani malo osiyanasiyana ogawa manambala amtundu wa Efaneti amathandizira10/100M, theka/full duplex auto- chosinthika, kuthandizira mawonekedwe a VLAN Ethernet amatha kuthandizira AUTO-MDIX (mizere yowoloka komanso yolumikizidwa molunjika) Mawonekedwe a foni ndi chitetezo cha mphezi, mphezi idafika IEC61000 -4-5 Short dera panopa yoweyula 8 / 20μs, nsonga linanena bungwe voteji 6KV lotseguka mfundo. Mtunda wotumizira ndi mpaka 2-120Km popanda kusokoneza AC 220V, DC-48V, DC24V ikhoza kukhala yosankha magawo ♦ Fiber Multi-mode Fiber 50/125um, 62.5/125um, mtunda wautali kwambiri: 5Km @ 62.5 / 125um fiber single, attenuation (3dbm/km) Wave Utali: 820nm Mphamvu yotumizira: -12dBm (Min) ~-9dBm (Max) Kumverera kwa Wolandila: -28dBm (Min) Budget yolumikizira: 16dBm Single-mode Fiber 8/125um, 9/125um Utali wotalikirapo wotumizira: 40Km 4K Kutumiza mtunda: 40Km0K Kutumiza 9/125um single mode CHIKWANGWANI, attenuation (0.35dbm/km) Utali Wamafunde: 1310nm Mphamvu yotumizira: -9dBm (Min) ~-8dBm (Max) Receiver sensitivity: -27dBm (Min) Budget yolumikizira: 18dBm ♦ Mawonekedwe a Efaneti (10/100M) Chiyanjano chapakati / 10M) 100 Mbps, theka / duplex yonse auto-negotiation Interface Standard: Yogwirizana ndi IEEE 802.3, IEEE 802.1Q (VLAN) MAC Adilesi Kutha: 4096 Cholumikizira: RJ45, kuthandizira Auto-MDIX ♦ FXS Foni ya Chiyankhulo cha Mphete: 75V Mafupipafupi a mphete: 25HZ Mizere iwiri 600 Impedance pick up) Kubweza kutaya: 40 dB ♦ FXO Switch Interface Ring zindikirani mphamvu: 35V Kuzindikira kwa mphete: 17HZ-60HZ Kulephera kwa mizere iwiri: 600 Ohm (kunyamula) Kutaya kutayika: 40 dB Kutayika kwa kubwerera: 20 dB ♦ Malo ogwirira ntchito: -10 ° C ~ 50 °C Chinyezi Chogwira Ntchito: 5% ~ 95% (no condensation) Kutentha kosungira: -40 ° C ~ 80 ° C Kusungirako Chinyezi: 5% ~ 95 % (palibe condensation) Specifications Model Fiber-64Voice +2FE Multiplexer JHA-P64FE02 Functional Description 64 * telefoni，2*100 Mbps Efaneti，1* Fiber mawonekedwe Mphamvu Mphamvu: AC180V ~ 260V;DC -48V;DC + 24VPower kugwiritsa: ≤10W Dimension Product Kukula: 485X138X45mm(WXDXH) 19 1U Kulemera 2.0KG Ntchito

E1-2FE mawonekedwe Converter JHA-CE1fF2p (Kusungunula thupi) Mwachidule Chosinthira mawonekedwe ichi chatengera FPGA. Multiplex 10/100Base-T Efaneti 2Channel mawonekedwe ku mawonekedwe a E1 kuti apatse ogwiritsa ntchito mwayi wa Efaneti pamlingo wa 1984K. Amagwiritsidwa ntchito kwambiri m'madipatimenti azachuma, chitetezo ndi chitetezo omwe amayenera kuperekedwa maukonde awiri osiyana, ndipo onse pamaneti amthupi amatha kupatulidwa kwathunthu. Mwachitsanzo, dongosolo lazachuma la bizinesi, maukonde amkati aofesi ndi maukonde abizinesi sangathe kulumikizidwa palimodzi. Multiplexer iyi imatha kuthetsa vutoli. Product Photo Mini Type Features Kutengera kudzikonda kwaumwini IC E1 imathandizira nthawi iliyonse, mtengo wake ndi 64K-2048K Mutha kuzindikira kuwunika ndikuwongolera zida zakutali, data yoyang'anira OAM sinatenge nthawi ya ogwiritsa ndikusunga bandwidth ya E1 Khalani ndi ntchito ya E1 mawonekedwe loop mmbuyo cheke, pewani chosinthira chikasokonekera chifukwa cha kubwerera kwa loop; Khalani ndi chizindikiro pamene chipangizocho chikuzimitsa kapena mzere wa E1 wathyoka kapena kutaya chizindikiro; Angazindikire 2Channel Efaneti kufala deta ndi 1 E1 mabwalo Inter-anakhazikitsa mphamvu Efaneti MAC adiresi (4,096) ndi m'deralo deta chimango kusefa ntchito 2Channel Efaneti mlingo ndi 1984Kbps, kukhazikitsa mlingo woyamba njira, yachiwiri njira Efaneti mlingo basi Kugawilidwa kwanthaka The chipangizo m'deralo akhoza kukakamiza kugunda kwa chipangizo chakutali tsatirani Kukhala ndi ntchito ya E1 mawonekedwe a loop kumbuyo cheke, pewani chosinthira chophwanyidwa chifukwa cha mawonekedwe a loop kubwerera; Itha kukhazikitsa mzere wa E1 kuti usatumize chizindikiro cha LINK ku mawonekedwe a Efaneti pomwe mzere wa E1 wathyoka; Mawonekedwe a Efaneti amathandizira mafelemu a jumbo (2036 Bytes) mawonekedwe a Efaneti amathandizira10M/100M, theka/full duplex auto-Negotiation ndi AUTO-MDIX (wodutsa mzere wowoloka komanso wolumikizidwa mowongoka wokhazikika) Khalani ndi Ethernet yowunikira ntchito yodzikonzanso, zida sizidzatero. akufa Perekani mitundu 2 wotchi: E1 master wotchi ndi E1 mzere wotchi; Ndi atatu Loop Back mumalowedwe: E1 mawonekedwe Loop Back (ANA) 、 Efaneti mawonekedwe Loop Back (DIG)), Lamula Efaneti mawonekedwe akutali Loop Back (REM) Perekani 2 impedances: 75 Ohm kusagwirizana ndi 120 Ohm bwino; Kuzindikira kutentha kwa zida zakutali ndi magetsi kuchokera ku zida zakomweko; Mtundu wa Rack Support SNMP Network Management; Ma Parameters ♦ E1 Interface Interface Standard: tsatirani ndondomeko ya G.703; Chiyanjanitso Rate: n * 64Kbps ± 50ppm; Chiyankhulo kodi: HDB3; E1 Impedans: 75Ω (osalinganiza), 120Ω (chokwanira); Kulekerera kwa Jitter: Mogwirizana ndi protocol G.742 ndi G.823 Kuyimitsidwa Kololedwa: 0~6dBm ♦ Efaneti mawonekedwe(10/100M) Chiyankhulo chapakati: 10/100 Mbps, theka/full duplex auto-negotiation Interface Standard: Yogwirizana ndi IEEE 802. , IEEE 802.1Q (VLAN) MAC Address Kuthekera: 4096 Cholumikizira: RJ45, kuthandizira Auto-MDIX ♦ Malo ogwirira ntchito: -10°C ~ 50°C Chinyezi chogwira ntchito: 5%~95 % (palibe condensation) Kutentha kosungira: -40°C ~ 80°C Chinyezi Chosungira : 5% ~ 95 % (palibe condensation) Zofotokozera Nambala Yachitsanzo: JHA-CE1fF2p Kufotokozera Kwantchito 2FE kufala pa 1channel yopangidwa ndi E1, ethernet kuthandizira Physical lsolation 。 Port Description One E1 mawonekedwe;2*FE Interface Mphamvu Mphamvu: AC180V ~ 260V;DC -48V;DC +24VPower Kugwiritsa: ≤10W Dimension Product Kukula: 216X31XW14 Kulemera kwa 1.3KG / chidutswa Kugwiritsa ntchito

E1-31 Channel RS232/RS422/RS485 Converter JHA-CE1D31/R31/Q31 Chidule Chosinthira mawonekedwe ichi chimachokera ku FPGA, kupereka 31Channel RS232/485/422 kutumiza pa E1 mawonekedwe. Chogulitsacho chimadutsa zosemphana pakati pa mtunda wolumikizirana wamawonekedwe achikhalidwe komanso kuchuluka kwa kulumikizana, kuonjezera apo, zimathanso kuthetsa kusokoneza kwa ma elekitiroma, kusokoneza kwa mphete ndi kuwonongeka kwa mphezi. Chipangizocho chimathandizira kwambiri kudalirika, chitetezo komanso chinsinsi cha kulumikizana kwa data. Amagwiritsidwa ntchito kwambiri poyang'anira mafakitale osiyanasiyana, kuwongolera njira komanso nthawi zowongolera magalimoto, makamaka ku Banki, ndi Mphamvu ndi magawo ena ndi machitidwe omwe ali ndi zofunikira zapadera pakusokoneza ma electromagnetic chilengedwe. RS232/RS485/RS422 njira imatha kufalitsa deta yosinthika mosiyanasiyana 0Kbps-14400bps baud rate. Chithunzi Chogulitsa 19inch 1U mtundu Mbali Zotengera kudzikonda kwa IC Support 3 mzere RS232 (TXD,RXD,GND), chithandizo cha CD,DSR,CTS Khalani ndi Loop Back Mode itatu: E1 mawonekedwe Loop Back (ANA)、RS232/485 / 422 mawonekedwe Loop Back (DIG)、Lamula RS232/485/422 mawonekedwe akutali Loop Back(REM) RS232/RS485/RS422 imathandizira pulagi yotentha, imathandizira kulumikizana kwa chipangizo cha DTE kapena DCE RS232/RS485/RS422 njira imatha kufalitsa ma data osinthika asynchronously 0Kbps-14400bps kuchuluka kwa baud BER Tester Serial port interface chitetezo champhezi chafikira IEC61000-4-5 (8/20μS) DM(Mode Wosiyana): 6KV, Impedance (2 Ohm), CM(Common Mode): 6KV, Impedance (2 Ohm) muyezo Perekani 2 impedances: 75 Ohm kusalinganika ndi 120 Ohm bwino; Itha kupanga E1 serial converter (A) --- E1 fiber optic Modem (B) --- fiber serial Modem (C) topology AC 220V, DC-48V, DC+24V, DC Power ndi Polarity-Free Parameters ♦ E1 mawonekedwe Chiyanjanitso Standard: kutsatira ndondomeko G.703; Chiyanjanitso Rate: 2048Kbps ± 50ppm; Chiyankhulo kodi: HDB3; Kulepheretsa: 75Ω (osalinganiza), 120Ω (yokwanira); Kulekerera kwa Jitter: Mogwirizana ndi protocol G.742 ndi G.823 Kuyimitsidwa Kuloledwa: 0~6dBm ♦ mawonekedwe a seri Standard EIA/TIA-232 RS-232 (ITU-T V.28) EIA/TIA-422 RS-422 (ITU -T V.11) EIA/TIA-485 RS-485 (ISO/IEC8284) Serial Interface RS-422: TXD+, TXD-, RXD+, RXD-, Signal Ground RS-485 4 mawaya: TXD+, TXD-, RXD+, RXD-, Signal Ground RS-485 2 mawaya: Corpond Data+(Respond Data+ TX+), Deta- (Zogwirizana TX-）, Signal Ground RS-232: RXD, TXD, Signal Ground ♦ Malo ogwirira ntchito: -10°C ~ 50°C Chinyezi chogwira ntchito: 5%~95 % (palibe condensation) Kutentha kosungira: -40°C ~ 80°C Chinyezi Chosungira: 5% ~ 95 % (palibe condensation) Mfundo Nambala Yachitsanzo: JHA-CE1D31/R31/Q31 Kufotokozera Kwantchito E1-31 Channel RS232/RS422/RS485 Converter Port Description One E1 Interface, 31 Data Interface Mphamvu yamagetsi: AC180V ~ 260V;DC -48V;DC +24VPower Kugwiritsa: ≤10W Dimension Dimension kukula: 485X138X44mm (WXDXH) Kulemera 2.0KG/chidutswa Kugwiritsa Ntchito Njira yothetsera 1 Njira yothetsera 2

Fiber-64Voice +2GE Multiplexer JHA-P64GE02 Mwachidule Chipangizochi chimapereka foni ya 1-64Channel, 2Channel 10M/100/1000M Efaneti mawonekedwe (Waya Speed ​​1000M)，2Channel Efaneti mawonekedwe ndi masinthidwe mawonekedwe, angathe kuthandizira VLAN. Makina onsewa amagwira ntchito modalirika komanso mokhazikika ndikugwiritsa ntchito mphamvu zochepa, kuphatikiza kwakukulu, kukula kochepa komanso kukhazikitsa kosavuta ndi kukonza. Chithunzi cha Inchi 19 Mawonekedwe amtundu Wotengera kukopera kwanu kwa IC Voice port imathandizira FXO ndi FXS port,Support FXO/FXS, Magnet telefoni Interface, FXO port docking yokhala ndi switchboard yoyendetsedwa ndi pulogalamu, doko la FXS lolumikizidwa ndi foni ya wogwiritsa ntchito; 1 ~ 64 njira yofikira mawu, mawonekedwe a Voice FXO / FXS, chithandizo cha woyimbira foni / kubweza polarity / ntchito ya fax; Thandizani malo osiyanasiyana ogawa manambala ntchito Efaneti imathandizira10/100/1000M, theka/full duplex auto- chosinthika, kuthandizira mawonekedwe a VLAN Ethernet amatha kuthandizira AUTO-MDIX (mizere yowoloka komanso yolumikizidwa mowongoka) Mafoni amtundu wotetezedwa ndi mphezi, mphezi. anafika IEC61000-4-5 Short dera panopa yoweyula 8 / 20μs, nsonga linanena bungwe voteji 6KV lotseguka mfundo. Mtunda wotumizira ndi mpaka 2-120Km popanda kusokoneza AC 220V, DC-48V, DC24V ikhoza kukhala yosankha magawo ♦ Fiber Multi-mode Fiber 50/125um, 62.5/125um, mtunda wautali kwambiri: 5Km @ 62.5 / 125um fiber single, attenuation (3dbm/km) Wave Utali: 820nm Mphamvu yotumizira: -12dBm (Min) ~-9dBm (Max) Kumverera kwa Wolandila: -28dBm (Min) Budget yolumikizira: 16dBm Single-mode Fiber 8/125um, 9/125um Utali wotalikirapo wotumizira: 40Km 4K Kutumiza mtunda: 40Km0K Kutumiza 9/125um single mode CHIKWANGWANI, attenuation (0.35dbm/km) Utali Wamafunde: 1310nm Mphamvu yotumizira: -9dBm (Min) ~-8dBm (Max) Receiver sensitivity: -27dBm (Min) Budget yolumikizira: 18dBm ♦ Chiwonetsero cha Ethernet (10/100/100) 10/100/1000 Mbps, theka/full duplex auto-negotiation Interface Standard: Yogwirizana ndi IEEE 802.3, IEEE 802.1Q (VLAN) MAC Adilesi Kutha: 4096 Cholumikizira: RJ45, kuthandizira Auto-MDIX ♦ FXS Foni ya Chiyankhulo Champhepo Mphete: 75V Ring pafupipafupi: 75V Ring Zwiri- Kulepheretsa kwa mzere: 600 Ohm (sankhani mmwamba) Kubwerera kutayika: 40 dB ♦ FXO Switch Interface Ring kuzindikira mphamvu: 35V Kuzindikira kwa mphete: 17HZ-60HZ Mizere iwiri Impedance: 600 Ohm (kunyamula) Kutaya kutaya: 40 dB Kubwerera kutayika: 20 dB ♦ Malo ogwirira ntchito: Kutentha kwa ntchito: -10°C ~ 50°C Chinyezi chogwira ntchito: 5% ~ 95 % (palibe condensation) Kutentha kosungira: -40 ° C ~ 80 ° C Kusungirako Chinyezi: 5% ~ 95 % (palibe condensation) Zolemba za Model Fiber-64Voice +2GE Multiplexer JHAP64GE02 Kufotokozera Magwiridwe 64 * telefoni, 2 * 1000Mbps Efaneti, 1 * CHIKWANGWANI mawonekedwe Mphamvu Mphamvu: AC180V ~ 260V;DC -48V;DC +24VPower kugwiritsa: ≤10W Dimension Product Kukula: 485X138X45mm(WXDXH) 19 1U Kulemera 2.0KG Ntchito

Zofunika: ♦ Kufikira 155Mb/s Maulalo a Data ♦ Chotsekera Chotentha ♦ Cholumikizira Chimodzi cha SC ♦ Mpaka 40 km pa 9/125μm SMF ♦ 1550nm DFB laser transmitter ♦ 1310nm PIN photo-3V detector +3VL Power Supplier Chiyanjanitso Choyang'anira Chimagwirizana ndi SFF-8472 ♦ Mphamvu Zazikulu 2.0V kapena kutsegulidwa, kuyatsa pa TDIS 1000 V) Electrostatic Discharge (ESD) to Single SC Receptacle IEC 61000-4-2GR-1089-CORE Yogwirizana ndi FCEMICInterferences Electromagnetic Gawo 15 Class BEN55022 Kalasi B (CISPR 22B)VCCI Kalasi B Yogwirizana ndi miyezo Laser Eye Safety FDA 21CFR 1040.10 ndi 1040.11EN60950, EN (IEC) 60825-1,2 Yogwirizana ndi Gulu loyamba la laser product. • Dera Lovomerezeka la Circuit SFP Host • Makulidwe amakanika

Mbali ♦ Kuthandizira 2 1000Base-X SFP slot ndi 8 10/100/1000Base-T(X) doko la Efaneti. ♦ Thandizo IEEE802.3, IEEE802.3u, IEEE802.3x. ♦ Pulagi-ndi-sewero, 10/100/1000Base-T(X), full/half duplex, MDI/MDI-X auto-adaptation. ♦ Kupanga kwa chip cha mafakitale, chitetezo cha 15kV ESD, chitetezo cha 8kV. ♦ DC10-58V redundancy mphamvu, reverse polarity chitetezo. ♦ Mapangidwe a Industrial 4, -40-85 ° C kutentha kwa ntchito. ♦ IP40 idavotera nyumba ya aluminium alloy, DIN-Rail yokwera. Mau oyamba JHA-IGS28H ndi pulagi-ndi-sewero osayendetsedwa mafakitale Efaneti lophimba, amene angapereke yankho lachuma Efaneti wanu. Kapangidwe kake kotchinga fumbi (IP40 chitetezo kalasi), over-current, over-voltage and EMC protected, redundant double power inputs komanso ma alarm anzeru omangidwa angathandize otsogolera oyang'anira nyumba kuyang'anira ntchito ya netiweki, yomwe imatha kugwira ntchito modalirika m'malo ovuta komanso oopsa. JHA-IGS28H imathandizira 2 1000Base-X SFP slot ndi 8 10/100/1000Base-T(X) doko la Efaneti. Imathandizira CE, FCC, muyezo wa RoHS, kesi yachitsulo yolimba kwambiri, kuyika mphamvu (DC10-58V). Kusinthako kumathandizira IEEE802.3, IEEE802.3u, IEEE802.3x yokhala ndi 10/100/1000Base-T(X), full/half-duplex, ndi MDI/MDI-X auto-adaptation, -40-85℃ kutentha kwa ntchito imatha kukwaniritsa zofunikira zamitundu yonse yamafakitale, kupereka yankho lodalirika komanso lachuma pamaneti yanu yamakampani a Ethernet. Specification Protocol Standard IEEE802.3, IEEE802.3u, IEEE802.3x Flow Control IEEE802.3x control flow, back press flow control Kusintha Magwiridwe VLAN kuthandizira ndi kuchuluka: Support 4096 VLAN IDs Transmission Mode: Store and Forward Packet forward rate rate:14. Bandwidth: 20Gbps MAC Table Kukula: 1M Kuchedwa Nthawi: 100,000 Maola chitsimikizo 5-year Dimension Order Information Model No. Kufotokozera Kwa Katundu JHA-IG28H Unmanaged Industrial Ethernet Switch, 2 1000Base-FX ndi 8 10/100/1000Base-T(X), SC Connector, Multimode, Dual Fiber, 2Km, DIN-Rail , DC10-58V, -40-85°C Kutentha kwa Ntchito JHA-IG28H-20 Osayendetsedwa ndi Industrial Ethernet Switch, 2 1000Base-FX ndi 8 10/100/1000Base-T(X), SC Connector, Single Mode, Dual Fiber, 20Km, DIN-Rail, DC10-58V, -40-85 °C Kutentha kwa Ntchito JHA-IG28WH-20 Efaneti Yamafakitale Osayendetsedwa Switch,2 1000Base-FX ndi 8 10/100/1000Base-T(X), SC Connector, Single Mode, Single Fiber, 20Km, DIN-Rail, DC10-58V, -40-85°C Kutentha kwa Ntchito JHA-IGS28H Osayendetsedwa Industrial Efaneti Switch, 2 1000Base-X SFP Slot ndi 8 10/100/1000Base-T(X), DIN-Rail, DC10-58V, -40-85°C Kutentha kwa Fiber Cholumikizira: SC/ST/FC/LC(SFP Slot), Single Mode/Multimode, Dual Fiber / Single Fiber, 2Km/20Km/40Km/60Km/80Km/100Km/120Km ndi Optional. Magetsi: DC24V DIN-Rail Power Supply kapena Adapter ya Mphamvu ndizosankha.