Fxo Fxs
2010
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 Cisco SRP 521W 4 Port Wireless N Router And SIP Phone Adapter 2FXS 1FXO Unlocked $59.99 Time Remaining: 15d 9h 42m Buy It Now for only: $59.99 |
 Netcomm V431 VoIP Gateway 4 LAN 3 FXS 1 FXO RRP 726 $34.64 Time Remaining: 5d 5h 17m Buy It Now for only: $89.08 |
 Linksys SPA3102 NA VoIP Router 1FXO + 1FXS SPA3000 HT488 Asterisk Compatible $63.90 Time Remaining: 4d 10h 13m Buy It Now for only: $63.90 |
 Grandstream HT503 HT 503 1LAN 1WAN 1FXS 1FXO ATA $55.00 Time Remaining: 23d 7h 19m Buy It Now for only: $55.00 |
 Unlocked Linksys SPA3102 Voice Gateway Router VoIP Adapter 1FXO 1 FXS $59.88 Time Remaining: 27d 22h 57m Buy It Now for only: $59.88 |
 HandyTone HT503 ATA IAD 1LAN 1WAN 1FXS 1FXO Grandstream $59.00 Time Remaining: 18d 8h 6m Buy It Now for only: $59.00 |
 Openvox A400P 2FXS FXO Digium Asterisk Trixbox TDM400 $113.00 Time Remaining: 7d 14h 7m Buy It Now for only: $113.00 |
 Digium TDM800P 8 Port FXS FXO Analog Card PCI NEW $255.00 Time Remaining: 4d 3h 12m Buy It Now for only: $255.00 |
 Cisco 1760 with VIC 2FXS VIC 2FXO WIC 1DSU WIC 1AM PVDM $199.00 Time Remaining: 15d 6h 40m Buy It Now for only: $199.00 |
 Cisco 2600 Series 2610 Router w VIC 2FXS VIC 2FXO M1 WIC 1T Modules $285.00 Time Remaining: 1d 14h 49m Buy It Now for only: $285.00 |
 TDM410P TDM400P TDM410 for Asterisk Trixbox Elastix w 4 module Voip FXO or FXS $81.99 Time Remaining: 15d 7h 22m Buy It Now for only: $81.99 |
 Digium TDM410P 4 Port PCI FXO FXS Analog Card NEW $175.00 Time Remaining: 12d 5h 1m Buy It Now for only: $175.00 |
 TDM410P TDM400p for Asterisk Trixbox Elastix w 4 module Voip IPPBX FXO FXS $75.99 Time Remaining: 15d 7h 17m Buy It Now for only: $75.99 |
 UNLOCKED NEW LINKSYS SPA3000 SIP VOIP ANALOG TELEPHONE ADAPTER FXS FXO $34.19 Time Remaining: 1d 20h 44m Buy It Now for only: $34.19 |
 Linksys SPA3102 NA VoIP Router 1FXO + 1FXS SPA3000 HT488 Asterisk Compatible $63.90 Time Remaining: 18d 6h 13m Buy It Now for only: $63.90 |
 Cisco 1760 VOICE LAB + VIC 2FXO + VIC 2FXS + PVDM 12 + CME 41 CCNA CCNP CCIE $173.76 Time Remaining: 1d 11h 22m Buy It Now for only: $173.76 |
 IP PBX Asterisk 2FXO FXS port ZYCOO Follow meIVRDISA $219.75 Time Remaining: 3d 21h 5m Buy It Now for only: $219.75 |
 Openvox A1200P 8 FXS FXO Card Digium Asterisk Trixbox $299.00 Time Remaining: 6d 13h 20m Buy It Now for only: $299.00 |
 Cisco 2610XM 128 48 NM HDA 4 FXS 8 FXO CME 41 SDM 25 CCVP LAB $315.00 Time Remaining: 5d 7h 12m Buy It Now for only: $315.00 |
 ATCOM IP02 IP PBX VOIP 2x FXS FXO Digium Asterisk PBX $270.00 Time Remaining: 20d 15h 28m Buy It Now for only: $270.00 |
 CISCO 2851 WIC 1DSU T1 V2 PVDM2 48 EVM HD 8FXS DID EM HDA 3FXS 4FXO $1,295.00 Time Remaining: 4d 8h 41m Buy It Now for only: $1,295.00 |
 Openvox A400P 4FXS FXO Digium Asterisk Trixbox TDM400 $170.00 Time Remaining: 6d 13h 20m Buy It Now for only: $170.00 |
 OpenVox A1200P0403 4 FXS 3FXO Asterisk VoIP SIP Card $350.00 Time Remaining: 13d 16h 16m Buy It Now for only: $350.00 |
 Openvox A400P 2 FXS FXO Digium Asterisk Trixbox TDM400P $113.00 Time Remaining: 8d 19h 28m Buy It Now for only: $113.00 |
 A800P 8x analog FXS FXO for Digium Asterisk Trixbox NEW $295.00 Time Remaining: 6d 13h 40m Buy It Now for only: $295.00 |
 Asterisk Elastix Trixbox tdm410p tdm400p tdm800p tdm410 tdm400 Card NEW FXO FXS $75.99 Time Remaining: 15d 7h 21m Buy It Now for only: $75.99 |
 Cisco UC320 4 FXO 1 FXS 8 POE Switch WiFi 80211 router telephone system $650.00 Time Remaining: 17d 19h 44m Buy It Now for only: $650.00 |
 TDM800P 4fxo 4fxs for Asterisk Now Trixbox Elastix Voip IPPBX TDM800 IPPBX $158.00 Time Remaining: 15d 18h 37m Buy It Now for only: $158.00 |
 Cisco NM 2V Voice FAX Module for VIC 2FXO VIC 2FXS $24.75 Time Remaining: 18h 34m Buy It Now for only: $24.75 |
 Digium AEX2400 24 Port FXO FXS Analog Card PCIe PCI E $360.00 Time Remaining: 4d 1h 57m Buy It Now for only: $360.00 |
 CISCO 2811 + VIC2 2FXO + VIC2 2FXS + PVDM2 8 + 4 x ISDN ccna ccnp ccie voice lab $710.89 Time Remaining: 27d 4h 28m Buy It Now for only: $710.89 |
 A1200P 12x FXS FXO for Digium Asterisk Trixbox NEW $309.00 Time Remaining: 6d 13h 39m Buy It Now for only: $309.00 |
 Unlocked LINKSYS SPA3000 VOIP FXS FXO PSTN ADAPTER $58.98 Time Remaining: 1d 4h 29m Buy It Now for only: $58.98 |
 ATCOM IP08 IP PBX VOIP 8x FXS FXO Digium Asterisk PBX $570.00 Time Remaining: 8d 13h 12m Buy It Now for only: $570.00 |
 Sangoma B600 D PCI 4FXO 1 FXS w Hardware Echo Cancellation $375.00 Time Remaining: 10d 16h 25m Buy It Now for only: $375.00 |
 Unlocked Linksys SPA3000 SPA 3000 SIP VOIP FXS FXO PSTN Phone Adapter New D2925D $41.99 Time Remaining: 4d 17h 39m Buy It Now for only: $41.99 |
 CISCO 2811 + VIC2 4FXO + VIC 4FXS DID + 4 ISDN CME 71 ccna ccnp ccie voice lab $630.34 Time Remaining: 17d 23h 28m Buy It Now for only: $630.34 |
 Grandstream HandyTone HT503 HT 503 FXS FXO Port Analog Telephone Phone Adapter $69.99 Time Remaining: 25d 12h 30m Buy It Now for only: $69.99 |
 Openvox A400P 1FXS FXO Digium Asterisk Trixbox TDM400 $89.00 Time Remaining: 6d 13h 20m Buy It Now for only: $89.00 |
 TDM410P for Asterisk Trixbox Elastix w 2fxo 2fxs module Voip $81.99 Time Remaining: 15d 18h 27m Buy It Now for only: $81.99 |
 OpenVox A1200P0304 3 FXS 4 FXO Asterisk VoIP SIP Card $350.00 Time Remaining: 13d 15h 15m Buy It Now for only: $350.00 |
 OpenVox A400E22 4 Port Analog PCI E w 2 FXS 2 FXO $186.96 Time Remaining: 16h 51m Buy It Now for only: $186.96 |
 Cisco 2821+3550pwr+2x7940+VIC2 4FXO+VIC 4FXS DID+4xISDN ccna ccnp ccie voice lab $947.86 Time Remaining: 4d 4h 22m Buy It Now for only: $947.86 |
 Openvox A400P 4 FXS FXO Digium Asterisk Trixbox TDM400P $170.00 Time Remaining: 26d 6h 7m Buy It Now for only: $170.00 |
 CISCO SRP547W A K9 SRP547 ADSL2+ ANNEXA 80211N FCC 4FXS 1FXO $423.67 Time Remaining: 7d 6h 57m Buy It Now for only: $423.67 |
 Openvox A400P 1 FXS FXO Digium Asterisk Trixbox TDM400P $89.00 Time Remaining: 6d 13h 11m Buy It Now for only: $89.00 |
 Cisco 2801 + VIC2 2FXO + VIC 4FXS DID CME 7 voice ccna ccnp ccie lab $552.91 Time Remaining: 20d 6h 59m Buy It Now for only: $552.91 |
 MULTITECH MVP410 FX 4PORT FXS FXO SIP AND T38 GATEWAY US CANADA $785.52 Time Remaining: 29d 7h 1m Buy It Now for only: $785.52 |
 10PCS Cisco SRP 521W Wireless N Router SIP Gateway 2FXS 1FXO UNLOCKED $568.00 Time Remaining: 15d 18h 46m Buy It Now for only: $568.00 |
 MULTITECH MVP410 FX 4PORT FXS FXO SIP AND T38 GATEWAY US CANADA $785.89 Time Remaining: 29d 7h 18m Buy It Now for only: $785.89 |
 New 100 OEM Cisco C1861 SRST C F K9 18618U SRSTCUE 4FXS 4FXO 8X PO $1,575.00 Time Remaining: 16d 26m Buy It Now for only: $1,575.00 |
 Cisco MC3800 Series MC3810 V3 W 4 FXS 2 FXO 2 SERIAL 1 T1 E1 PORTS $19.99 Time Remaining: 6d 17h 39m Buy It Now for only: $24.99 |
 Cisco 2821+3550 pwr+VIC2 4FXO+VIC 4FXS DID+7940G+4xISDN ccna ccnp ccie voice lab $947.86 Time Remaining: 27d 10h 53m Buy It Now for only: $947.86 |
 AEX800 PCI Express 8port FXS FXO for Asterisk card tdm800p tdm800 AEX410 PCI E $193.00 Time Remaining: 5d 9h 1m Buy It Now for only: $193.00 |
 Adtran Total Access TA 924 DSX 1 4212924L2 2nd Gen IAD 16 FXS + 8 FXO Free Ship $999.99 Time Remaining: 15d 19h 32m Buy It Now for only: $999.99 |
 Openvox A400P 1FXS FXO Digium Asterisk Trixbox TDM400 $89.00 Time Remaining: 5d 4h 53m Buy It Now for only: $89.00 |
 AE810E11advanced PCI E card +1 FXO400+1FXS400EC2032 $629.00 Time Remaining: 19d 22h 21m Buy It Now for only: $629.00 |
 Zoom 5801 00 11 VOIP ATA G711 ILBC G729 FXS FXO SIP $60.03 Time Remaining: 13d 7h 57m Buy It Now for only: $60.03 |
 TDM410P TDM400p TDM400 TDM410 for Asterisk Trixbox Elastix w 4 module FXO FXS $75.99 Time Remaining: 15d 7h 19m Buy It Now for only: $75.99 |
 Cisco 2821 + CME 8 + VIC2 4FXO + VIC 4FXS DID + 4x ISDN ccna ccnp ccie voice lab $710.89 Time Remaining: 3d 9h 27m Buy It Now for only: $710.89 |
 OpenVox A1200P0301 3 FXS 1 FXO Asterisk VoIP SIP Card $279.00 Time Remaining: 13d 14h 29m Buy It Now for only: $279.00 |
 Cisco 2821 + PVDM2 + VIC2 4FXO + VIC 4FXS DID + 4x ISDN ccna ccnp ccie voice lab $789.88 Time Remaining: 21d 4h 53m Buy It Now for only: $789.88 |
 OpenVox A1200P0401 4 FXS 1 FXO Asterisk VoIP SIP Card $294.00 Time Remaining: 13d 15h 59m Buy It Now for only: $294.00 |
 OpenVox A1200P0501 5 FXS 1 FXO Asterisk VoIP SIP Card $323.00 Time Remaining: 13d 12h 6m Buy It Now for only: $323.00 |
 OpenVox A1200P0303 3 FXS 3 FXO Asterisk VoIP SIP Card $323.00 Time Remaining: 13d 15h 11m Buy It Now for only: $323.00 |
 Unlocked Linksys SPA3102 VOIP Gateway Phone Adapter FXS FXO PSTN Router New D292 $75.99 Time Remaining: 9d 18h 29m Buy It Now for only: $75.99 |
 ATCOM IP04 IP PBX VOIP 4x FXS FXO Digium Asterisk PBX $430.00 Time Remaining: 12h 6m Buy It Now for only: $430.00 |
 OpenVox A1200P0302 3 FXS 2 FXO Asterisk VoIP SIP Card $294.00 Time Remaining: 13d 14h 49m Buy It Now for only: $294.00 |
 Digium TDM2400P 24 Port FXO FXS Analog Card PCI $345.00 Time Remaining: 4d 1h 50m Buy It Now for only: $345.00 |
 OpenVox A1200P0402 4 FXS 2 FXO Asterisk VoIP SIP Card $323.00 Time Remaining: 13d 16h 4m Buy It Now for only: $323.00 |
 OpenVox A1200P0404 4 FXS 4 FXO Asterisk VoIP SIP Card $305.96 Time Remaining: 13d 17h 1m Buy It Now for only: $305.96 |
 ATA 171 plus VoIP Adapter 1FXS also sell 2FXS1FXS+1FXO1FXS+1PSTN $50.00 Time Remaining: 3d 1h 21m Buy It Now for only: $50.00 |
 Multitech MVP200 MVP210 NEW RouteFinder 2 Channel VOIP Gateway FXS FXO EM $459.00 Time Remaining: 13d 13h 57m Buy It Now for only: $459.00 |
 OpenVox 24 Port FXS FXO PCI for Digiums Asterisk VoIP $379.00 Time Remaining: 3d 12h 50m Buy It Now for only: $379.00 |
 OpenVox A400E10 4 Port Analog PCI E 1 FXS 0 FXO AEX410B $93.46 Time Remaining: 16h 51m Buy It Now for only: $93.46 |
 OpenVox A1200P0305 3 FXS 5 FXO Asterisk VoIP SIP Card $375.00 Time Remaining: 13d 15h 22m Buy It Now for only: $375.00 |
 OpenVox A1200P0502 5 FXS 2 FXO Asterisk VoIP SIP Card $350.00 Time Remaining: 13d 12h 51m Buy It Now for only: $350.00 |
 OpenVox A1200P0408 4 FXS 8 FXO Asterisk VoIP SIP Card $479.00 Time Remaining: 14d 8h 10m Buy It Now for only: $479.00 |
 TDM800P for Asterisk Now Trixbox Elastix FXS FXO Voip IPPBX TDM800 IPPBX $158.00 Time Remaining: 17d 8h 29m Buy It Now for only: $158.00 |
 Unlocked Linksys SPA3000 SPA 3000 SIP VOIP FXS FXO PSTN Phone Adapter New D2925D $42.99 Time Remaining: 3d 22h 43m Buy It Now for only: $42.99 |
 OpenVox A400E31 4 Port Analog PCI E w 3 FXS 1 FXO $186.96 Time Remaining: 16h 51m Buy It Now for only: $186.96 |
 OpenVox A400E03 4 Port Analog PCI E 0 FXS 3 FXO AEX40 $161.46 Time Remaining: 16h 51m Buy It Now for only: $161.46 |
 OpenVox A1200P0504 5 FXS 4 FXO Asterisk VoIP SIP Card $407.00 Time Remaining: 13d 13h Buy It Now for only: $407.00 |
 OpenVox A1200P0306 3 FXS 6 FXO Asterisk VoIP SIP Card $407.00 Time Remaining: 13d 15h 26m Buy It Now for only: $407.00 |
 OpenVox A1200P0405 4 FXS 5 FXO Asterisk VoIP SIP Card $407.00 Time Remaining: 13d 17h 8m Buy It Now for only: $407.00 |
 CISCO SRP547W A K9 SRP547 ADSL2+ ANNEXA 80211N FCC 4FXS 1FXO $423.67 Time Remaining: 7d 7h 2m Buy It Now for only: $423.67 |
 Multitech Systems MVP130 1port Voip Fxs fxo Gateway Perp Us canada $297.60 Time Remaining: 25d 3h 27m Buy It Now for only: $297.60 |
 OpenVox A1200P0505 5 FXS 5 FXO Asterisk VoIP SIP Card $439.00 Time Remaining: 13d 13h 47m Buy It Now for only: $439.00 |
 Cisco 2811+3550+VIC2 4FXO+VIC 4FXS DID+4 ISDN IP 7940G ccna ccnp ccie voice lab $788.32 Time Remaining: 27d 10h 56m Buy It Now for only: $788.32 |
 OpenVox A400E20 4 Port Analog PCI E w 2 FXS 0 FXO $127.46 Time Remaining: 16h 51m Buy It Now for only: $127.46 |
 MULTITECH MVP810 FX 8 PORT FXS FXO SIP VoIP GATEWAY NEW $1,450.00 Time Remaining: 15d 13h 21m Buy It Now for only: $1,450.00 |
 OpenVox A1200P0307 3 FXS 7 FXO Asterisk VoIP SIP Card $439.00 Time Remaining: 13d 15h 33m Buy It Now for only: $439.00 |
 OpenVox A1200P0406 4 FXS 6 FXO Asterisk VoIP SIP Card $439.00 Time Remaining: 13d 17h 11m Buy It Now for only: $439.00 |
 Openvox A400P 4FXS FXO Digium Asterisk Trixbox TDM400 $170.00 Time Remaining: 17d 3h 7m Buy It Now for only: $170.00 |
 Cisco 2801 + PVDM2 16 + VIC2 4FXO + VIC 4FXS DID CME 7 voice ccna ccnp ccie lab $709.33 Time Remaining: 10d 11h 55m Buy It Now for only: $709.33 |
 OpenVox A400E02 4 Port Analog PCI E 0 FXS 2 FXO AEX402B $127.46 Time Remaining: 16h 50m Buy It Now for only: $127.46 |
 OpenVox A1200P0506 5 FXS 6 FXO Asterisk VoIP SIP Card $460.00 Time Remaining: 13d 13h 56m Buy It Now for only: $460.00 |
 OpenVox A1200P0507 5 FXS 7 FXO Asterisk VoIP SIP Card $479.00 Time Remaining: 13d 14h 15m Buy It Now for only: $479.00 |
 OpenVox A1200P0308 3 FXS 8 FXO Asterisk VoIP SIP Card $460.00 Time Remaining: 13d 15h 38m Buy It Now for only: $460.00 |
 OpenVox A1200P0309 3 FXS 9 FXO Asterisk VoIP SIP Card $479.00 Time Remaining: 13d 16h 19m Buy It Now for only: $479.00 |
Fxo Fxs
The importance of protecting VoIP-VoIP, IP, modem - HC network broadcasting industry
Or Internet telephony refers to the Internet (rather than the public switched telephone network, which PSTN) transmission of communications services?? Voice, fax and / or voice, information applications. Send Internet phone calls are the basic steps involved, including the analog voice signal into a digital voice signal and the signal compressed into Internet Protocol (IP) packets for transmission via the Internet, the receiving end of these steps are just the opposite. Because it is run on the Internet, so VoIP telephone has a very low cost, the only cost is the cost PNET. It will become the world's IDD areas of long-distance calls very common means of transmission.
Recently, VoIP generally use ITG (Internet Telephony Gateway) / VoIP gateway via IP to transmit voice. VoIP gateway with the following several ports.
FXO (Foreign Exchange Office): It is a direct link to the two-wire PSTN ports.
FXS (Foreign Exchange Station): It is through the RJ-11 handset plug hole and Terminal Equipment Connected, such as regular phone.
Ethernet port: RJ-45 port through it to connect to the PC or xDSL Modem On.
USB port: it is to connect an external USB device, such as card reader, 3GHSDPA cards, flash memory, etc..
power port: it is usually 12V external power input port.
Mainstream VoIP Support single / dual channel FXS, and also appeared on the market access as many as 30 in the FXS. VoIP is the latest development with the built-in routers and Wi-Fi connectivity, VoIP via wireless network to xDSL wireless connectivity, thereby enhancing their access point mobility within the coverage area. And there are the POE (Power over Ethernet) into the trend, so no external power supply can drive VoIP.
Since these ports is connected with the outside world events when there have been surges, and the ITE IT equipment is connected to the telecommunication needs of the telecom network management standards, it had to use protective devices to protect these ports.
Each country has its own safety standards, such as the United States TelecordiaGR1089-Core and UL60950, internationally accepted ITU-TK.20/K.21 (International Telecommunication Union) and China YD/T993, 950 standard. Different standards for the protection of devices, technologies and topologies have different stability conditions. By comparison we found, consistent with U.S. standards of protection than the device's ability to meet the International Telecommunication Union standards to withstand the high, more than meets the high standards of China. In most cases, comply with U.S. standards of protection solutions can basically set the standard by ITU-TK.2x most Test Conditions.
Order to design the most appropriate solution for VoIP protection, to understand the various surge protection devices protect the voltage levels and it is important. Common surge voltage level as shown in Table 1
Several solutions 1SLIC (subscriber line interface circuit) protection
one-way fixed-voltage protector (SIDACtor) + PTC Figure 2 one-way fixed-voltage protection device with the PTC
Which, overvoltage (OV) protection by working voltage is-90V for P1101DF-1 (one-way fixed-voltage Protection devices); over-current (OC) protection using 250S130
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