Related by context. All words. (Click for frequent words.) 72 #G wavelengths [001] 71 SDH SONET 71 T#/E# circuits 70 CWDM wavelengths 69 #G wavelength [002] 69 #.#Tbps [002] 69 OADM 68 Gigabit Ethernet uplinks 68 coarse wavelength division multiplexing 68 uplink ports 68 QAM quadrature amplitude modulation 68 Gbit sec 68 #nm #nm [003] 67 #G wavelengths [002] 67 EDFAs 67 Ethernet SONET 67 QAM channels 67 #Gbit/sec 67 #Gbs 67 #Base SX 67 DVB ASI 67 SFP transceivers 67 datarates 67 #Gbit s Ethernet [002] 66 #GE ports 66 OC-#/STM-# [001] 66 #.#Gbit s [001] 66 Gbits sec 66 multimode optical fiber 66 #X# MIMO 66 Mbps throughput 66 XFP transceivers 66 wavelength division multiplexing 66 SRIO 66 #GbE ports 66 #gbps 66 OC-#/STM-# [004] 66 #/#/#Base-T 65 gigabit ports 65 OADMs 65 2Gbit s 65 XAUI interface 65 Gigabit Ethernet WAN 65 SDH PDH 65 demultiplexers 65 CATx 65 HD SDI input 65 4Gbit s 65 POTS interfaces 65 CoreStream Agility 65 #Gigabit Ethernet 65 ADVA FSP 65 DWDM optical 65 #.#Gbps [002] 65 BigIron RX 65 jitter clocks 65 SFP modules 65 E#/T# ports 65 modulation formats 65 Gigabit Ethernet transceivers 65 CWDM DWDM 65 linecards 65 SFP + transceivers 65 DS1s 65 SFP ports 65 muxponder 65 ONUs 65 ADSL2 + modem 65 unshielded twisted pair 65 #/#/# Ethernet ports 64 IPmux 64 T#/E# interfaces 64 OC-#/STM-# [002] 64 Synchronous Digital Hierarchy 64 Raman amplification 64 Packet ONP 64 LMS# [001] 64 DWDM dense wavelength 64 #.#Gbit s [002] 64 #-Gbit/sec 64 #G Ethernet ports 64 IP multicast 64 #.#Gbps [001] 64 serial RapidIO 64 #/#/# Gigabit Ethernet 64 DWDM SFP 64 #G optical [001] 64 #.#af compliant 64 QPSK 64 SGMII 64 OC #c 64 1GigE 64 GbE interfaces 64 MIMO antennas 64 2Gbps 64 #/#BaseT Ethernet 64 #GbE interfaces 64 tunable transponders 64 #BASE SX 64 DP QPSK 64 #Gbps optical [001] 64 #/#BASE-T 64 IP multicasting 64 sub channelization 64 Ethernet interfaces 64 Vmux 64 multimode fibers 64 1Gb s 64 Ultra DMA 64 Calix C7 64 mux demux 64 transceiver modules 64 Fiber Driver 64 Digivance 64 GigE ports 64 pluggable transceiver 64 Gbps wavelengths 64 #x# MIMO 64 SONET EoS 64 #.#Gb s [001] 64 4Gbit/sec 64 drop multiplexer ROADM 64 ASN gateway 64 Raman amplifiers 64 XFP optics 64 #.#a/g/n 63 SS7 signaling 63 #.#G bps 63 SONET Ethernet 63 SONET rings 63 Gigabit Ethernet GigE 63 4Gbps 63 Muxponder 63 CoreDirector 63 channel bandwidths 63 Gbps optical 63 #Base FX 63 Gbps wavelength 63 DDR2 memory interface 63 #Mbps #.#g 63 AES3 63 Adaptive Optical Engine 63 #Base T [002] 63 omni directional antenna 63 Ethernet LANs 63 XENPAK 63 #G OTN [001] 63 RS-#/# 63 TDM ATM 63 SDI inputs 63 downconverter 63 WAN PHY 63 #Gb s Fibre Channel 63 UTP cabling 63 #Gbit s [001] 63 demultiplexing 63 Ethernet aggregation 63 #Gbps [001] 63 symmetrical bandwidth 63 diplexer 63 node segmentation 63 GPON OLT 63 FlightStrata 63 Packet Optical Platform 63 #Tx/#Rx 63 Gigabit Ethernet interfaces 63 mesh nodes 63 MEF certified 63 TCP throughput 63 IP Multicast 63 transceiver IC 63 DPSK 63 metro DWDM 63 #BaseT [002] 63 loopbacks 63 reconfigurable optical 63 1Gbit/sec 63 #Gigabit 63 optical wavelength 63 Edge QAM 63 BEQ# 63 ISL#E [001] 63 XFP MSA 63 PCIe Gen2 63 #/#G [002] 63 Ethernet MPLS 63 gigabits sec 63 GaAs FETs 63 4Gbit s Fibre Channel 63 Tx Rx 63 SDIO interface 63 Tunable XFP 63 Gbaud 63 port #/#/# 63 MC#i 63 TCI# 63 backplane connector 62 Jumbo Frame 62 #Gbit s [002] 62 echo canceller 62 MODBUS RTU 62 Add Drop Multiplexers 62 SP#E 62 SPI interfaces 62 PCIe GbE 62 XFP modules 62 low latency InfiniBand 62 #/#/# Mbps Ethernet 62 seamless interworking 62 SONET SDH protocols 62 aggregation switches 62 fiber optic transceivers 62 baud rates 62 DS0 62 IEEE #.#b 62 drop multiplexer 62 embedded SERDES 62 multichassis 62 Synchronous Digital Hierarchy SDH 62 Gigabit LAN ports 62 ATCA blades 62 multimode fiber 62 T#/E#/J# 62 tunable DWDM 62 VQuad 62 DisplayPort v#.# 62 #.#j 62 #.#b wireless LAN 62 #Mbps downstream [001] 62 Gigabit uplink 62 #/#/# Ethernet 62 Gigabit Ethernet GbE ports 62 #/#Base-T 62 8Gbit s FC 62 RGMII 62 multirate 62 2Gb s 62 connectorized 62 MI #XM 62 Hi FOCuS 62 TMDS 62 Fujitsu FLASHWAVE 62 8PSK 62 gigabit Ethernet ports 62 fractional T1 62 TCP acceleration 62 XG# [001] 62 SoftMSC 62 1G Ethernet 62 XFPs 62 CS# EDC 62 Gigabit Ethernet Fibre Channel 62 #Mpbs 62 MPLS backbone 62 mesh backhaul 62 widely tunable laser 62 STM-#/OC-# 62 OC-#/STM-# [003] 62 coupled diode laser 62 1GbE 62 Gb s optical 62 T-BERD/MTS-#A 62 ADSL VDSL 62 DS1 DS3 62 AWG# Series 62 MBd 62 ADSL/ADSL2 + 62 SONET DWDM 62 8G Fibre Channel 62 AN #i 62 pluggable module 62 #Gbit Ethernet 62 #ohm [001] 62 4Gb Fibre Channel 62 Gb Ethernet 62 coax cables 62 optical multiplexer 62 dense wavelength division multiplexing 62 T#/E# T#/E# 62 Tb s 62 IP SAS SATA 62 BigIron MG8 62 ps nm 62 GigE interfaces 62 4Gbps Fibre Channel 62 SAS expanders 62 Infinera PICs 62 WCDMA HSPA + 62 WaveReady 62 pluggable modules 62 #/#/# Mbps 62 8Gbps 62 loopback mode 62 GbE ports 62 Wideband Networking Waveform 62 midspans 62 #GBASE CX4 61 Spatial Atrium 61 Gbps interfaces 61 datarate 61 SkyExtender 61 InfiniBand fabrics 61 MACSec 61 demodulate 61 Gb s Fibre Channel 61 mesh node 61 transimpedance amplifier 61 1x RTT 61 Calix E7 ESAP 61 Gigabit PHY 61 #Mbits/sec [001] 61 RGBHV 61 USART 61 WDM optical 61 tunable transmitter 61 #/#/#BASE-T 61 #Mbits [002] 61 #GigE ports 61 #.#GHz ISM 61 IEEE#.# [001] 61 FastIron SuperX 61 #Mbps [003] 61 SONET OC 61 packet forwarding 61 MRV Fiber Driver 61 #Mbps #Mbps [002] 61 SFP + modules 61 AdvancedMC modules 61 #/#/# ports 61 Gbps DWDM 61 ROADM Reconfigurable Optical 61 GTX transceivers 61 serdes 61 IEEE#.#b 61 packetized 61 #.#GHz [001] 61 #Gbps wavelengths 61 8G FC 61 GPON EPON 61 DSL T1 61 Cat 5e cable 61 ADSL2Plus 61 2Gbps Fibre Channel 61 4X InfiniBand 61 #BaseT [001] 61 Gbit Ethernet 61 Wavelength Division Multiplexing 61 IP MPLS backbone 61 uncompressed HD video 61 ADRF# 61 #GBASE SR# 61 CAT5e 61 Division Multiplexing 61 wirespeed 61 transceiver chipset 61 #.#Gb s [003] 61 3Gbit s 61 MPLS Multiprotocol Label Switching 61 local oscillator LO 61 IEEE#.#n standard 61 LambdaDriver 61 kbits 61 SDIO SPI 61 #Base X 61 Synchronous Optical Network 61 infrared IrDA 61 #/#BaseT 61 LDO voltage regulator 61 Passive Optical Networks 61 FSK modulation 61 AFBR 61 NetIron MLX 61 Ethernet connectivity 61 SFP transceiver 61 PWE3 61 Modbus RTU protocol 61 Wavelength Division Multiplexing WDM 61 #BaseT [003] 61 Cadant C4 CMTS 61 PoE ports 61 serial EEPROMs 61 AdvancedMCs 61 Mbits sec 61 singlemode fiber 61 PXI chassis 61 ProSLIC 61 trunking gateway 61 photonic layer 61 Resilient Packet Ring RPR 61 2kHz 61 hiT 61 SDI HD SDI 61 #GBASE LR4 [001] 61 3Gb s 61 Gbits s 61 Gb sec 61 Intel #L 61 Serdes 61 Allot NetEnforcer 61 EN# MPEG 4 61 diplexers 61 FastIron Edge X 61 8Gbps Fibre Channel 61 #Gb Fibre Channel 61 8Gbit s Fibre Channel 61 pseudowire 61 Infinera Bandwidth Virtualization 61 8Gbit s 61 PONs 61 WAN interfaces 61 iDirect Evolution platform 61 #.#Gb s [002] 61 RF amplifier 61 HotPort 61 Gb s Ethernet 61 OC# [003] 61 omni directional antennas 61 Ciena ActivFlex 61 CWave 61 Gigabit interfaces 61 #.#Gbps [004] 61 MTP2 61 Ultra# [001] 61 #GX [001] 61 x8 PCIe 61 G.# GPON 61 #GB/sec 60 ATS# 60 sRIO 60 Juniper T# 60 Zhone MALC 60 #Mbit/sec [002] 60 #.#a/b/g/n 60 RS#/RS# 60 USB #.#/#.# 60 DWDM Dense Wavelength Division 60 serial transceivers 60 LAN PHY 60 DWDM 60 PCI Express interface 60 #Gbits s 60 XFP optical 60 #G/#G [001] 60 DVB S2 modulation 60 ZyAIR B 60 #GbE uplinks 60 inverse multiplexing 60 CAT5 cabling 60 UMTS modem 60 GbE switching 60 Mb sec 60 #x# WSS 60 G.# compliant 60 SM# AH 60 GPON optical 60 #Base TX 60 Line Terminal OLT 60 dual UARTs 60 3Gbps 60 NetIron XMR 60 quadrature amplitude modulation QAM 60 RS# serial interface 60 Mbps #.#b 60 MetaLIGHT 60 SMC#L# 60 SwitchBlade x# 60 #GBASE SR 60 crosspoints 60 VME# 60 AQ# [001] 60 OSI Layer 60 NetIron #G 60 GigaMux 60 USB#.# interface 60 ATCA blade 60 LoopStar 60 #G ATCA 60 UTP cables 60 ESD diodes 60 OFDM Orthogonal Frequency 60 LVDS output 60 L2 L7 60 #Tbps 60 Bluetooth v#.# + EDR 60 RS#/# 60 gigabit throughput 60 #G bps [002] 60 QoS mechanisms 60 AdvancedMC module 60 #/#Base-T Ethernet 60 MSPPs 60 tunable transponder 60 LAN Ethernet 60 Coarse Wavelength Division Multiplexing 60 #GBASE LR4 [002] 60 EtherMap PDH 60 nonblocking 60 Mbits s 60 CWDM 60 Firetide HotPort 60 SD SDI HD SDI 60 amplifier module 60 #/#/#BASE-T ports 60 Ethernet GbE 60 TDMoIP 60 BPON EPON 60 Gigabit Ethernet connectivity 60 Gbps 60 Force# C# 60 Wavelength Tracker 60 wideband tuner 60 unicast multicast 60 port #G Ethernet 60 EN #G 60 Kbits 60 ExtremeXOS ® 60 CDMA femtocells 60 #Gb/sec 60 1G bps 60 crosspoint switches 60 Brocade DCX 4S 60 Phase Shift Keying 60 zNID 60 wavelength tunability 60 PsipTN 60 HyperTransport links 60 GBps 60 SATA Revision #.# 60 midplane 60 SUPRALink 60 LcWDM 60 #Base T [001] 60 optical DWDM 60 QAMs 60 GbE SFP + 60 MHz bandwidth 60 TCP UDP 60 Zarlink ZL# 60 MIMO antenna technology 60 IPv4 IPv6 60 Mbps symmetric 60 TPSDA 60 Cat5 cable 60 LightSoft 60 5Ghz 60 ADSL ADSL2 + 60 UDP TCP 60 Infinera DTN 60 #:# multiplexer 60 Mux Demux 60 uplinks 60 IPSec tunnels 60 LightGAIN 60 Optical Multiservice Edge 60 OTU3 60 fasp 60 Ethernet SONET SDH 60 Infinera DTN optical 60 CDMA 1XRTT 60 matrix switcher 60 lightpaths 60 Flashlink 60 DDR InfiniBand 60 OFDM orthogonal frequency 60 #Gbps serial 60 wideband codecs 60 #Mbps #Mbps [001] 60 FTB #B 60 wireless mesh nodes 60 HDMI switchers 60 differential amplifiers 60 STA# [001] 60 converged IP MPLS 60 Packet Optical Edge 60 dc dc controller 60 Mindspeed M# 60 PCIe interface 60 multi homed 60 ISDN DSL 60 #GigE [001] 60 multicast streams 60 NetIron XMR Series 60 #GBASE 60 #Gb s [002] 60 HiperMAX 60 #Gbps Ethernet [001] 60 OPTera Metro 60 linear amplifiers 60 8GHz 60 MOTOMESH Duo 60 Midspans 60 Ku Band 60 FSP #RE 60 Juniper routers 60 LC connectors 60 Ethernet Extender 60 multimode fiber optic 60 AMN# [002] 60 OCT# Series 60 #Mbs [002] 60 BNC connectors 60 DS#/E# 59 iTLA 59 Gigabit throughput 59 #T#R 59 #x#G [002] 59 Fibre Channel ports 59 MicroMAX 59 uplink bandwidth 59 NexTone SBC 59 GE PON 59 G.SHDSL 59 RS# serial 59 Gigabit Ethernet ports 59 BelAir# 59 MSP# [002] 59 #.#a/b/g wireless 59 UART interface 59 QAM modulation 59 SCSI Fibre Channel 59 OM# [002] 59 Ethernet Fibre Channel 59 dual gigabit Ethernet 59 SONET SDH Ethernet 59 #G XFP 59 SFP + ports 59 Gigabit connectivity 59 #G/#G [003] 59 BlackDiamond # 59 4Gb s 59 MediaBase 59 TDM circuits 59 XENPAK X2 59 OFDM modulation 59 ohm coaxial cable 59 E1s 59 FortiSwitch 59 ADF# 59 PHY SerDes 59 QSFP + 59 RJ# ports 59 Gbps InfiniBand 59 #MHz #MHz #MHz 59 #.#Gbit/sec 59 Multiplexing 59 Ethernet LAN 59 #.#ba [001] 59 #G #G [002] 59 Airbiquity aqLink 59 Ethernet-over-SONET/SDH 59 Iub 59 #Gb s [001] 59 #.#Gbps [003] 59 Firewire IEEE 59 #.#GT s 59 wave division multiplexing 59 Ethernet transceivers 59 #/#/#BASE-T Gigabit Ethernet 59 HD SDI SD SDI 59 RS# interface 59 SONET SDH optical 59 UHF SATCOM 59 FPDP 59 GHz millimeter wave 59 DQPSK 59 #Gb s optical 59 transceiver module 59 Cisco IP NGN 59 xPON 59 Tunable lasers 59 IEEE #.#x [002] 59 CWDM SFP 59 multimode fiber MMF 59 Brocade VCS 59 Ovation MC# 59 RJ# connector 59 #G DWDM [001] 59 SONET SDH OTN 59 ActivFlex 59 CAT5 cables 59 Tbit s 59 ROADMs 59 #x# Multiple Input 59 compute blades 59 PhyNet Router 59 Signaling Gateway 59 1Gb Ethernet 59 #GE [002] 59 baud rate 59 Ethernet Gigabit Ethernet 59 Gigabit ports 59 #MHz bandwidth 59 iSPAN 59 #.#G [004] 59 Gigabit speeds 59 AON Superblade 59 GAO# [002] 59 RocketIO TM 59 Lucent Stinger 59 1G 2G 59 IEEE #b 59 RFS# 59 GPIB USB 59 GPON Gigabit 59 synchronous asynchronous 59 BaseT 59 CESoP 59 Ethernet MACs 59 T1 DS3 59 GPON ONT 59 GSM# [001] 59 1Gbit s 59 iNFINITI 59 Kontron AM# 59 #.#-#.# GHz #.#-#.# GHz 59 GPRS EDGE 3G 59 amplifier modules 59 Tatara Subscriber Gateway 59 E#/T# 59 #Mbps Ethernet 59 MS#A 59 tunable XFP 59 Fibre Channel interfaces 59 4Mbit s 59 KVM extenders 59 iDirect iNFINITI 59 TDM Ethernet 59 ISL#E [002] 59 LVDS interface 59 #GBASE LR 59 MOTOMESH 59 SerDes chipset 59 bonded ADSL2 + 59 #/#/#Mbps 59 OfficeConnect 59 Mach Zehnder modulators 59 Ethernet TCP IP 59 gigabit serial 59 FastStream SC 59 CAT5 cable 59 byte FIFO 59 SHDSL 59 #QAM 59 MAX#A 59 4U enclosure 59 #Gbit/sec Ethernet 59 LVD SCSI 59 M7i 59 GaAs FET 59 gigabit switch 59 Serial FPDP 59 silicon photonic 59 BigIron 59 T1 E1 59 QT# [002] 59 Mbps symmetrical 59 Le# [002] 59 Gigabits 59 GPIB interface 59 IEEE #.#a/b/g 59 Gigabit Ethernet adapters 59 SDH Synchronous Digital Hierarchy 59 galvanic isolation 59 Foundry FastIron 59 6Gbps SAS 59 OmniPCX Enterprise 59 IPv#/v# 59 TRF# [002] 59 4 Gb Fibre 59 PCI Express Fibre Channel 59 omnidirectional antennas 59 4Gbyte 59 ISDN PRI 59 Nortel Networks Passport 59 MeshMAX 59 OM3 fiber 59 IGMP snooping 59 Grandmaster Clock 59 PCIe Gen 2 59 synchronous optical 59 IPv#/IPv# 59 #GFC 59 MicroNode 59 DVB S2 satellite 59 multihop 59 STV# 59 Nortel Common Photonic 59 EuroDOCSIS 59 T#/E# 59 Gigabit uplinks 59 #/#/#/#MHz 59 4Gbps FC 59 HD SDI inputs 59 ADSL2 + VDSL 59 Universal Asynchronous Receiver 59 servo amplifier 59 manpack 59 Spirent TestCenter 59 megabits sec 59 matrix switchers 59 adaptive beamforming 59 #.#af PoE 59 0 dBm 59 #Mbits [001] 59 gigabit Ethernet interfaces 59 serializer deserializer 59 UTP cable 59 BT.# 59 E StaX 59 #.#AE 59 CX# [001] 59 dB SNR 59 fasp ™ 59 1Gb iSCSI 59 Octasic Vocallo MGW 59 ITU G.# GPON 59 Belden #A 59 5Gb s 59 Gbps Fibre Channel 59 crosspoint switch 59 ATA IDE 59 Arria GX FPGAs 59 #nm VCSEL [001] 58 PHY layer 58 3Gb s SDI 58 MODBUS 58 Enterasys Matrix 58 frequency synthesizer 58 Multiservice Edge 58 TN# [002] 58 Gbs 58 Motorola SURFboard 58 please visit www.EXFO.com 58 arbitrary waveform generators 58 Calix C7 Multiservice Access 58 IEEE#.#b g 58 #Mb/sec [002] 58 PCI Express x8 58 HDMI Extender 58 Freescale MSC# 58 TOSAs 58 sensor actuator 58 PDH SONET SDH 58 HD SD SDI 58 1RU chassis 58 W-CDMA/HSPA 58 FXO FXS 58 singlemode 58 multi terabit 58 FC HBAs 58 BLADE RackSwitch G# 58 #.#af Power 58 modulation schemes 58 PMC XMC 58 optical splitters 58 Add Drop Multiplexer 58 Multi Gigabit 58 CESD portfolio 58 AdaptRate 58 Model #A 58 RJ# connectors 58 MACsec 58 Sonet SDH 58 vNIC 58 optical spectrum analyzers 58 PacketCable compliant 58 Vitesse FlexEQ 58 +# dBm output 58 WDM wavelength division multiplexing 58 Gbps transponders 58 M# connectors 58 NXCPUs 58 Generic Framing Procedure GFP 58 #/#Mbps Ethernet 58 omnidirectional antenna 58 quadrature modulators 58 #GbE connectivity 58 Iuh 58 mSwitch 58 #Gb s Ethernet [002] 58 SkyStream Mediaplex 58 VTLWaveNet 58 kbit 58 XPort# 58 serial ATA SATA 58 bonded T1 58 Gen2 switches 58 MF TDMA 58 LVDS interfaces 58 E2E GPON 58 ZMD# 58 ADSL SDSL 58 TestPoint 58 MegaRAID adapters 58 demodulating 58 #Mbps downstream [002] 58 #Mbit/sec [001] 58 HSDPA EDGE 58 #Kbps modem 58 WiMAX basestation 58 Extio F# 58 LTE FDD 58 VCXO 58 #G WDM [002] 58 NetApp FAS 58 E1 T1 58 Reconfigurable Optical Add 58 RF tuner 58 I2C serial 58 peripheral DMA 58 PowerBook G4 DDR2 #mb 58 #.#GB/sec [002] 58 Mbit s Ethernet 58 #Gbps Ethernet [002] 58 #/#/#MHz 58 MTP MPO 58 WNDAP# 58 PoE switches 58 BCM# integrates 58 MIMO configurations 58 Gigabit WAN 58 Cat6 58 hot swappable modules 58 Mbit Ethernet 58 WDM PON 58 DDR2 memory controller 58 x4 PCI Express 58 EoS 58 Gpbs 58 #Gb s InfiniBand adapters 58 #bit ADCs 58 #MHz frequency [002] 58 CWave TM 58 mA output 58 UTP copper 58 GPIB interfaces 58 Optical Switch 58 unicast streaming 58 LSI SAS 58 Gigabit Ethernet GbE 58 Differential Quadrature Phase 58 MIMO antenna 58 Terabits 58 CAT6 58 stripline 58 RF demodulator 58 AirPair 58 iConverter 58 #BASE T [001] 58 Dense Wavelength Division Multiplexing 58 #Mbps upstream 58 #AWG 58 Mbit sec 58 optical isolators 58 #.#ah 58 CSU DSU 58 WLAN #.#n 58 TDA# [001] 58 Tsunami MP.# 58 pseudowires 58 Gbps throughput 58 #/#.#G 58 Brocade BigIron RX 58 RocketIO 58 DIAMETER 58 Vx7 58 Exstreamer 58 GBX# 58 Digi Connect 58 packet switched 58 BeamFlex 58 bandpass 58 Bandwidth Virtualization 58 GMSK 58 NetEnforcer 58 Vector Signal Analyzer 58 PL# [003] 58 termination resistor 58 edge QAMs 58 Raman amplifier 58 IP FCIP 58 Tekelec EAGLE 58 #/#G [001] 58 HFC hybrid 58 deployed Ciena CN 58 Firetide mesh nodes 58 Switch Routers 58 C#x DSPs [002] 58 S#E [003] 58 #GbE SFP + 58 Lucent Flexent 58 TxDAC 58 MXK platform 58 GbE switch 58 fieldbuses 58 Gbps gigabits per 58 Atheros chipset 58 POTS DSL 58 transmitters receivers