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Q1: Where can I find the latest drivers and documentation (including User Guides) ?
A1: You will find the latest drivers upgrade on our public website. As the packages are upgrades, you'll need to have previous drivers installed.
Q2: What is the supported USB standard?
A2: Version 1.1. The USB-bus is a half duplex 12Mb-bus. USB 2.0 is not supported, but as it is backwards copatible, there shouldn't be any issues for using the SpeedTouch 330 on an USB2.0 port.
Q3: The LED's are both Amber colored, what's wrong?
A3: This means that the POST (Power On Self Test) is not correct. Check the connections. See also the USB-User-Guide.
Q4: What's the downstream speed?
A4: The maximum downstream speed is 8Mb on ATM-level, depending (of course) on line & noise conditions and the profile offered by your ADSL-operator. Remarks: The USB-bus is a half-duplex 12 Mb bus that doesn't allow the maximum ADSL throughput. Using certain protocols also influences the efficiency of the connection. Due to the fact that a part of the protocol stack is done in software, the performance of your PC influences the speed of your connection.
Q5: There is no reaction from the LED's.
A5: This means that there are problems with the Power. The ST330 modem is a buspowered device. Be sure that if you are using a hub, that it supports buspowered devices. Check the connections. See the SpeedTouch 330 User Guide.
Q6: Is ADSL-Lite (ITU-T G.992.2) supported?
A6: The SpeedTouch 330 drivers are multi-mode and supports:G.Lite (ITU-T G.992.2) , full rate ANSI (ANSI T1.413 Issue2 DMT) and full rate ITU (ITU-T G.992.1).
Q7: Where is the power coming from?
A7: This modem is an USB-bus powered device. The power is supplied via the host or via a selfpowered hub. Be aware that this is a high-power device (500mA).
Q8: what is the Isochronous mode I read about, and what is the difference with the Bulk mode ?
A8: In the SpeedTouch USB, we only implemented the bulk mode, which means your SpeedTouch USB used the available USB bandwidth. But if you want to guarantee a certain USB bandwidth, you have to use the Isochronous mode, which allows to reserve a certain bandwidth exclusively. The SpeedTouch 330 supports both Bulk and Isochronous mode.
Q9: Does the modem support PPPoA or PPPoE?
A9: Both PPPoA and PPPoE are supported through embedded clients. Another possibility for PPPoE is to use the RFC1483 drivers, with an external PPPoE client. Note: Windows XP and MAC OS X both have a PPPoE client by default.
Q10: Have you implemented the use of AAL2? This for voice over ATM?
A10: We have no plans yet to implement this.
Q11: Is the speed of my PC influencing the speed of my ST330 ?
A11: Yes it is. The whole ATM layering and TCP/IP is done on the USB host: your PC. Your CPU speed influences the performance of the USB modem. Also other programs that need CPU are decreasing the performance of the USB modem. Other USB devices also take bandwidth from the USB-bus and influences the performance of the USB modem.
Q12: My webcam doesn't work correctly since I installed the SpeedTouch 330.
A12: This can happen when two devices try to come up in Isochronous mode but the first one to start takes up too much bandwidth. This means the second device won't be able to start because it can't get the bandwidth it is asking. One possible workaround is to plug the devices in different USB roots. You may need an extra PCI USB card.
Q13: Is LLC encapsulation supported?
A13: Both LLC and VCmux encapsulation are supported.
Q14: Do I need new hardware for a new software release?
A14: You don't have any problem with upgrading software: the R2.0 drivers will work on any SpeedTouch USB or 330. Please be aware, though, that you will need a different hardware to use the ADSL over ISDN feature.
Q15: Is the loopback (VP/VC 0/21) functioning already?
A15: Yes. Loopback is supported for the operators up to 10kbps for VP/VC 0/21.
Q16: Does the USB support NAT/PAT?
A16: No. An USB modem can have only 1 host = 1 PC. NAT/PAT functionality is not logical. Connection sharing is possible through external programs ( i.e. Internet Connection Sharing in Windows ).
Q17: I have a problem with the suspend mode of my PC when using the ST330 with an external PPPoE client !
A17: The Suspend mode of the PC causes a problem to the PPPoE client. After going in Suspend the client still says that there's a PPP-session. Solution: close and reopen your PPPoE client. |