Answer
USB is a peripheral bus specification developed by PC and telecom industry leaders -- Compaq, DEC, IBM, Intel, Microsoft, NEC and Northern Telecom -- that brings plug and play of computer peripherals outside the box, eliminating the need to install cards into dedicated computer slots and reconfigure the system.
Personal Computers equipped with USB allow that you don't even need to shut down and restart your PC to attach or remove a peripheral. USB also allows multiple devices -- up to 127 -- to run simultaneously on a computer, with peripherals such as monitors and keyboards acting as additional plug - in sites, or hubs.

Question 2
Why does MS-Windows XP keep on popping up the warning message windows during driver installation?
Answer
The annoying warning message windows keep on popping up because Ascom do not pay to obtain ISDN USB TA digital signer from the Microsoft Windows XP Publisher. However, this inconvenience won't effect the ISDN USB TA’s function in any aspects. You may ignore the warning messages by clicking the 'Continue Anyway" button during driver installation.


Question 3
My ISDN USB TA cannot be used to connect to the Internet after waking up from the power-saving mode. What can I do?
Answer
This issue is caused by some hardware incompatibility among USB devices. Please use either of the following methods to resolve this issue:
1. If you are using USB hub, plug ISDN USB TA into your PC's USB port directly.
2. Plug ISDN USB TA to another USB port of your PC.
3. Plug out and re-plug in the ISDN USB TA to your PC.

Question 4
I check both NDISWAN and ASCOM ISDN MLPPP as my virtual modems, but it turns out the connection to the Internet is extremely slow and instable. What can I do?
Answer
Please select only virtual modem to resolve this issue.

Question 5
How do I connect to the Internet with 128K?
Answer

For ASCOM ISDN MLPPP, two B channels are used at first. Then you may use Byte Bar to add/drop the second B channel.
For ASCOM ISDN Dynamic MLPPP: connection speed is 64Kbps first, then the second channel will be automatically added/dropped by BOD mechanism.
For ASCOM ISDN PPP, one B channel is used at first. Then you may use Byte Bar to add/drop the second B channel.
For NDISWAN, please follow the procedures below:


For Win98/Me:

a. Set up a new connection in the Dial-Up networking folder.
b. Right-click the connection icon and select "Properties".
c. In the field "Multilink", click on the setting button.
d. Activate the option "Use additional devices" and then click on the Add button.
e. In "Device Name" select the unused NDISWAN device, i.e. "WAN-Line0X".
In the field "Phone Number", type the same number used for your connection.

For Win2000/XP

a. Select "My Network Places" option on the desktop and right-click it.
b. Right-click "Dial-up Connection" and select "Properties".
c. In "General", you can click both "NDISWAN driver". Then it will connect at 128K.


Question 6
My modem type is chosen as ASCOM ISDN MLPPP. Why can't I connect to the Internet?
Answer
It may cause by the MLPPP protocol is not supported by your ISP. Please select ASCOM NDISWAN protocol as your modem type.

Question 7
USB port Call Bump-In features enable users to connect to the Internet at 128 kbps, by utilizing both channels, but Telecom will charge users on per channel basis. Is there any way that the users can set to connect by only using 1 channel?
Answer
Yes, users are able to set default connection type to one channel or using both channels by selecting a proper protocol before connection is made. Select ‘Ascom ISDN PPP’ for 64kbps (one channel) or ‘Ascom ISDN MLPPP’ for 128kbps (2 channels).

Question 8
When utilizing both channels, can the users make or receive call?
Answer
Yes, the users are able to make or receive call when utilizing both channel with the help of Call Bumping feature. One channel will automatically drop to allow the call and automatically up again once the call is ended (case if the user select Ascom MLPPP protocol).

Question 9
When in restricted mode, does USB modem still functioning, which allow user to surf the Internet?
Answer
Yes, USB modem will always work independently, whatever port may be configured in Restricted Mode.

Question 10
Why my PC is now not detecting the USB modem, although it was working fine earlier on the same PC?
Answer
The USB driver is not uninstalled properly. Before installing USB driver, please ensure that all previously installed USB driver is Uninstalled properly from the PC. After uninstalling, please restart the PC and then follow the procedure for installing USB driver as mentioned in the Manual.

Question 11
I am doing testing on call bump-in which we can surf the Internet at either 64/128 kbps. I am connecting using MLPPP which allow me to connect at 128kbps. from the byte bar, I noticed 2 channel being occupied. When I click on the task bar to drop the 2nd channel, the byte bar shows only one channel being occupied, but, the speed indicate that I still surfing at 128 kbps. What happen here, am I surfing at 128 kbps using only one channel?
Answer
Here Speed indicates the maximum speed, which user can get with this connection and not the actual speed of Data Surfing. Actual speed of Data Surfing user can check on Byte Bar Rx CPS and Tx CPS. And if user will connect to the Internet with 64 kbps connection provided by the ISP, then only user will get the speed indicated as 64 kbps.

Question 12
What is BONDING?(Multilink service)
Answer
Bonding is when the two B channels are combined to form a logical channel of 128Kbps. It is also referred to as inverse multiplexing. This is done on the customer's ISDN modem or router.

The customer must confirm with their ISP (Internet Service Provider) that they are a 128 kbps user. This service normally comes at a higher cost.

To achieve 128 kbps the customer's modem must be set-up for 128 kbps and the modem will make 2 calls to the ISP, each call occupying a 64 kbp/s channel. As both channels are being used, no further calls are possible on the line. (However should the modem supports "bandwidth on demand", the modem will drop 1 channel to receive the call.)
Please note that the customer will be billed for two calls, due to the fact that both channels are in use.

Question 13
Why do I get billed for short calls?
Answer
Precaution should be taken with the 128 kbps bonding service. Should the customer only require a 64kbps service, and the modem is incorrectly set up for 128 kbps, short calls will occur. Short calls are established when a 64 kbps customer's modem is incorrectly set-up for the 128 kbps service. The modem will dial out on 1 x 64 kbps channel and connect to the ISP and authenticate. The modem then makes a second attempt/call on the remaining 64 kbps channel and connects to the ISP. The ISP fails the authentication as the customer is already connected on that user name and password. (The ISP does not accept the 64 kbps subscriber as being a 128 kbps (Multilink) subscriber.) The second call is dropped. The second call takes about 2 seconds to connect and fail authentication. While the customer is surfing on the 1x 64 kbps channel the modem will keep on trying to establish the 2-second connection/call.

Question 14
How can I prevent short calls and how can I correct my modem settings?
Answer
Customers should select PPP protocol instead of MLPPP for 64 kbps connection and / or need to phone their ISP for assistance on correct modem settings. Correct modem settings will eliminate short calls from appearing.

Question 15
What extra hardware will I need with NT+2ab for Internet Surfing (handsets/Modems/ Routers/etc..)?
Answer
When using NT+2ab for Internet access you will be supplied with a line and a network terminator. In addition to that you will need an ISDN internal or external Terminal adaptor for Internet Surfing. Better you go for NT+2ab+USB.

Question 16
What are the effects of values in Byte Bar’s PPP setting?
Answer
When Dynamic MLPPP is chosen as your modem, the 2nd B channel will be automatically added /dropped according to the values in the PPP tab.

Question 17
What should I type in the Byte Bar’s MSN setting?
Answer
The Multiple Subscriber Number (or MSN) is an ISDN feature that allows you to have more than one directory numbers for a single BRI. If you have more than one ISDN devices connected to NT1, assign a specific MSN to ISDN USB TA and it will accept only the incoming call directed to the specified MSN, for example, if you assign an MSN "5013400" to ISDN USB TA, it will only accept calls with "Called Party Number" as 5013400. You can set up to 10 MSNs for ISDN USB TA, There aren't any assigned MSN's by default, i.e. ISDN USB TA will accept all incoming calls from every port.

Question 18
What should I choose for Analog Coding Method in Byte Bar's Switch tab?
Answer
In information Byte Bar's Switch tab, please choose A-law for European ISDN users and U-law for Taiwanese and American ISDN users. For other areas, please make sure which analog coding method your local teleCom is using, otherwise there will be problems for FAX, V.23, and V.22 bis connections.

Question 19
What is the main information provided by Byte Bar?
Answer
The Byte Bar provides comprehensive on-line information for each call. In the standard display mode, it displays:

- Direction of the call (Originate or Answer Mode).
- Call progress status, such as Dialing, Proceeding, and connect protocol. etc.
- Connection time of the current call.
- Transmitting / receiving data rate (in CPS or Character Per Second).
- Charging information, if any.