In the given review we shall consider ADSL SIP-shlyuz the companies. The copy given to us is beta-versiey the model intended for developers and testers, instead of for sale. For this reason some characteristics declared in the given review, can not coincide with characteristics of the commercial version. Functionalities: ADSL-marshrutizator and the gateway screen with an opportunity of shaping of the traffic, 4-hportovy'y the switchboard with auto detection of polarity on ports (Auto MDI/MDI-X), IPSec VPN-server, SIP-shlyuz, allowing to connect to the device two analog phones and to use them for organization IP-telefonii. Let's begin consideration of the device with general characteristics and productivity, then we shall consider opportunities VPN-servera of the device, shaping of the traffic, and also SIP-shlyuza. On one indicator of activity on each of ports LAN ports RJ- for connection of analog phones to SIP-shlyuzu The device is executed on the basis of processor TNETD72 (32-bitny'y RISC the processor for use in ADSL-ustroystvah) The switchboard discount laptop notebook computer of the device is executed on the basis of microcircuit ADM6996I (5-tiportovy'y the switchboard 10/1 with an opportunity of the control of width of a passband). On a payment Mb SDRAM of memory EM48AM16 and Mb Flash-pamyati EN29LV320B also are established. As to us has acted beta-versiya devices, the complete set of delivery has been limited by following items: Patchkord RJ- - RJ- in the length hardly less than meters BP 18V, 1A with length of a cord about 1. meters Patchkord RJ- - RJ- in the length hardly less than meters According to the Russian representation of company ZyXEL, on the Russian market the given device will be delivered with the documentation in Russian. Yes, NTP, Time, Daytime - IP-adres a server it is set manually Yes, 2FXS port for connection of analog phones with a voice-frequency set, support of codecs G.711a, G.711u, G.729 Adjustment of a router it is possible to make by means of WEB-interfeysa adjustments, and also using Telnet and SNMP. The device allows simultaneous use of eight virtual channels (with various values of parameters VPI/VCI) In case of break of communication about the Internet, it is possible perenapravlenie the traffic through other sluice which is being in LAN-segmente As well as many other discount laptop notebook computer things routers ZyXEL, the considered device has an opportunity of the expanded adjustment of service NAT. The device allows to choose one of two types: SUA Only (Single User) or Full Feature. In mode SUA Only creation of virtual servers with the task of a range of ports and IP-adresa a server on which it will be made pereadresaciya is possible. At use Full Feature NAT it is possible pereadresaciya from several global addresses on a little bit local (if, for example, service is started at once on several computers in LAN-segmente). Both of type NAT were in detail considered by consideration of other routers ZyXEL (the similar router with the wireless interface earlier was considered). It is possible to bring in the table of routes of the device of about static records. The considered device allows to create in LAN-segmente a little IP-podsetey (one basic + two additional). In each of podsetey the device has the IP-adres and is a basic discount laptop notebook computer sluice, Thus it carries out routing between data podsetyami and allows to adjust a filtration of the traffic between them However DHCP-server the device cannot give out to clients IP-adresa additional podsetey - them IP-adresa should be established manually. The device also can be adjusted under report Telnet, using the console interface. Usually in devices ZyXEL the console interface is executed in the form of the screen menu, and the system of commands is realized as an additional opportunity. Here we see simply system of commands of operational system ZyXEL ZyNOS 3.4. The interface of commands of the given operational system we shall not consider in detail. The compulsory choice of mode ADSL/ADSL2/ADSL + is possible only with use of the console interface of adjustment. Also using the console interface it is possible to adhere the virtual channel (with certain value VPI/VCI) to Ethernet-portu devices. Adjustments and discount laptop notebook computer productivity IPSec VPN, shaping of the traffic, and also opportunity SIP-telefonii organized on the basis of the given device, will be considered in the subsequent reviews, devoted to the given device. For testing ADSL-soedineniya it was used DSLAM, given to us the Russian representation of the company. Testing was spent by a technique at use of modulation of a signal: ADSL (G.dmt), ADSL and ADSL + in mode Fast (that is value of parameter Interleave delay was equaled to zero). Interleave Delay (value of this parameter is established on DSLAM'e) is the time specified in milliseconds which influences the size of the block of data transferred for time. If this time is established, for example, in ms - in the uniform block the data who have come for ms gather. The delay is used for correction of mistakes of transfer with use of algorithm Reed-Solomon (method Rida-Solomona) - this algorithm is more effective at use of greater discount laptop notebook computer blocks of data. The increase in time of a delay allows to increase the size of the uniform block of data just for more effective work of algorithm Reed-Solomon is justifies itself at poor quality of a telephone line and its big extent. On a qualitative telephone line of small length (just as at carrying out of our tests) it it is more favourable to minimize delays. The maximal speed: 6. Mbit/s - in mode ADSL g.dmt, 9. Mbit/s - in mode ADSL and 16. Mbit/s - in mode ADSL +. I shall note, that at reduction of the sizes of packages in mode ADSL g.dmt speeds a little bit above, than at ZyXEL P-2602HW EE which was considered by us earlier. But to tell precisely, whether it is connected with updating the device or that for testing another was used DSLAM, we cannot. As in LAN-segmente devices can be a little IP-podsetey, the device should make routing of the traffic between them, that creates additional loading on the processor. Testing has shown, discount laptop notebook computer that routing of the traffic between computers LAN-segmenta is made for the speed ~38- Mbit/s. It is not so high parameter, but it is necessary to consider, that it is only additional opportunity of the given device. During testing safety, occurs perezagruzka the given device, and it occurs at a stage of scanning of ports � probably, that component Beta here is shown. Most likely, to an output of the device in retail the insertion will be modified. According to the Russian representation of company ZyXEL, delivery of the device should begin in 1- months. The considered equipment shows good productivity in all modes, however in case of when on DSLAM'e there is a mode of an automatic choice of a mode of modulation, the device is connected in mode ADSL g.dmt, instead of in mode ADSL +. Adjustments of the device allow to make exact enough adjustment. An opportunity of creation of several address spaces in segment LAN and discount laptop notebook computer adjustment of a filtration of the traffic between them also gives side benefits, but DHCP-server devices can give out IP-adresa only from the basic podseti, all clients from additional podsetey devices cannot receive the address on DHCP. Routing of the traffic occurs for the speed ~38- Mbit/s. We shall consider opportunities IPSec VPN-servera of the device, shaping of the traffic, and also opportunity SIP-shlyuza in the following reviews, devoted to the given equipment. Opportunity of creation of several IP podsetey in LAN-segmente and routing between them During testing safety for stages of scanning of ports occurs perezagruzka devices DHCP-server The device cannot give out the address from additional podsetey in LAN-segmente (on the devices which are being in additional podsetyah, static adjustments should be registered) Other discussions in conference:

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