Solution:

When in PPP mode, your ISDN TA only reports single B-channel connect speeds to the operating system. If the B1 and B2 lights are illuminated, you have a MultiLink connection. If Dial-Up Networking shows that you are connected at 64 Kbps and both B1 and B2 lights are illuminated, you are connected at 128 Kbps. If Dial-Up Networking shows that you are connected at 56 Kbps and both B1 and B2 lights are illuminated, you are connected at 112 Kbps.

Solution:

Open the ControlCenter. Then click the Configuration Manager icon. When the "Basic Configuration" screen appears, click the Outgoing Calls drop-down menu. Then select Internet Access (PPP) 128 Kbps.

Solution:

Open ControlCenter. Then click the Configuration Manager icon. When the "Basic Configuration" screen appears, click the Dynamic Voice Override drop-down menu. Select either No Dynamic Voice Override or Outgoing Calls only. If you select "No Dynamic Voice Override," a B-channel will never be taken off the data transmission to make or accept a voice call. If you select "Outgoing Calls only," a B-channel will be taken off a data transmission only when you attempt to place a voice call from a telephone connected to your ISDN TA. When a voice call is made to a telephone connected to your ISDN TA, the caller will get a busy signal.

Solution:

Open ControlCenter. Then click the Configuration Manager icon. When the "Basic Configuration" screen appears, click the Dynamic Voice Override drop-down menu. Then select Incoming and Outgoing Calls. If this does not work, have the person try calling the other phone number for your ISDN line. Dynamic Voice Override may work on only one of your phone numbers, depending upon the type of ISDN service that you use.

Solution:

Make sure your ISDN TA is properly configured for the ISDN line by running ControlCenter. If there is a problem with the way the SPIDs and telephone numbers for your ISDN line are set up, ControlCenter's SPID Wizard will reconfigure your ISDN TA. Open ControlCenter and click the Configuration Manager icon. When the "Basic Configuration" screen appears, verify that "Internet Access (PPP)" is selected in the "Outgoing Calls" drop-down menu. This is the most common connection protocol used by Internet Service Providers. Verify that the CD light on the front of your ISDN TA illuminates when you place a call to your Internet Service Provider. If the CD light does not come on after you dial, open ControlCenter and click the Configuration Manager icon. When the "Basic Configuration" screen appears, click 56K next to "B-channel Rate." You may need to use a special character in the number you dial (if you are using AO/DI or MultiLink PPP, for example). For more information, see the chapter "Dialing, Storing Phone Numbers," and Logging Calls" in the electronic Users Guide on your Connections CD

Solution:

Open ControlCenter. Then click the Configuration Manager icon. Click the Advanced Configuration button, followed by the Data tab. Then click the PPP Settings button. When the "PPP Settings" screen appears, click the PPP Mode drop-down menu. Then click Transparent Async/Sync PPP to select it.

Solution:

In the phone number section of your dialing program type both phone numbers separated by &. (for example, 5551212&5551213) Then complete your connection as usual. If you are using Dial-Up Networking in Windows 95 or 98, turn off Use area code and Dialing Properties. There is not a check mark in the box next to the item when it is turned off. If you are using Dial-Up Networking in Windows NT 4, turn off Use Telephony dialing properties.

Solution:

Open ControlCenter and click the Configuration Manager icon. Verify that "V.120 Rate Adaption" or "Asynchronous 128 Kbps" is selected in the "Outgoing Calls" drop-down menu. Note: The device that you are connecting to must be using the same protocol that your ISDN TA is using. If your ISDN TA will also be receiving calls in a terminal program, click the Advanced Configuration button. Click the Data tab. Then verify that "V.120 Rate Adaption" or "Asynchronous 128 Kbps" is selected in the "Incoming Call Protocol" drop-down menu.

Solution:

You can initiate SPID Wizard from a terminal program. Open your terminal software (such as Hyperterminal). Then type AT*Zx,y,z and press return. Type this command without any spaces and let x equal your area code, y equal the first telephone number (Directory Number) for your ISDN line, and z equal the second telephone number for your ISDN line. The telephone numbers are provided by your telephone company when you order ISDN service. The SPID Wizard will try to configure your ISDN TA for your ISDN line using the telephone number information.

Solution:

Open a terminal program, such as Hyperterminal. To set your switch protocol, type AT*W=n and press Enter. Type the number that corresponds to your switch type in the place of n, using the list below as reference. n=1 DMS-100 n=2 National ISDN-1 (default) n=3 National ISDN-2 n=4 5ESS Custom Multipoint n=5 5ESS Custom Point-to-Point n=6 Leased Line 64 kbps (1 B-channel) n=7 Leased Line 128 kbps (2 B-channels) To enter your area code information, type AT*P0=xxx and press Enter. In the place of xxx, type your area code. To enter a telephone number for your ISDN TA, type AT*P1=xxx and press Enter. In the place of xxx, type one of the telephone numbers for your ISDN line. To enter a second telephone number, type AT*P2=xxx and press Enter. Type the second telephone number in the place of xxx. To enter the SPID for your first telephone number, type AT*S1=xxx and press Enter. Type the SPID in the place of xxx. To enter the SPID for your second telephone number, type AT*S2=xxx and press Enter. Again, type the SPID in the place of xxx. Once your numbers have been set, type ATZ! to resynchronize your ISDN TA to the telephone company's switch equipment. The alert light will turn off when the ISDN TA is properly synchronized to the telephone company switch. This may take one minute to complete. These settings do not have to be saved using the &W command.

Solution:

Open ControlCenter and click the Protocol Decode icon. A protocol monitor program will then extract this information from your ISDN TA.

Solution:

Make sure the BACP/BAP is enabled. Open ControlCenter and click the Configuration Manager icon. Then click the Advanced Configuration button. Click the Data tab. Then click the PPP Settings button. If a check mark does not appear next to "Enable BACP/BAP," click it to select it. A check mark will appear in the box next to the item when it is selected.

Solution:

Asynchronous 128K and Advanced Asynchronous 128K are both 3Com proprietary protocols. You must use the same type of ISDN equipment on both sides of the connection.

Solution:

Your ISDN TA only supports supplementary voice features when you use a National ISDN ordering code to set up your ISDN service. If you had to order your service by switch type, these features may not work. Also, many of the National ISDN codes only support the supplementary voice features on one of your ISDN line's phone numbers. Each of your Analog Device Ports is assigned one of your ISDN line's telephone numbers. Be sure your phone is plugged into the Analog Device Port that is assigned the phone number that supports the supplementary voice features. Check with your phone company to find out what ISDN ordering code you are using and to find out which of your phone numbers supports the supplementary voice features.

Issue:

Your ISDN TA does support the Microsoft Encrypted Password. However, the check box in Dial-Up Networking should not be selected. The remote server you are calling will require the connection be authenticated with the Microsoft Encrypted Password. The ISDN TA will send the password using the Microsoft Encrypted Password even though the box is unchecked in Dial-Up Networking. To turn this option off, click Windows Start, select Programs and Accessories, and click Dial-Up Networking. Right-click the icon of the connection you want to change. Then click Properties. When the properties screen for your connection appears, click the Server Types icon. In the "Advanced Options" section, turn off Require encrypted password by clicking it. The check mark in the box next to the item disappears when it is turned off. Then click OK.

Solution:

In the user name text box, add a backslash and your domain in capital letters after your regular user name (for example, username\DOMAIN).

Solution:

Using the 230.4 Kbps port speed with Windows requires a special serial port. Most new computer's serial ports operate at up to 115.2 Kbps. To use your ISDN TA at 230.4 Kbps, check with your computer manufacturer to see if your serial port will support that speed.

Solution:

Be sure that your Internet Service Provider supports AO/DI. Be sure that you put a period in front of the telephone number for your D-channel. If you are using Windows 95 or 98 Dial-Up Networking, be sure that Use country code and area code is turned off. If you are using Windows NT, be sure that Use Telephony dialing properties is turned off. These items is on the same connection properties screens as the boxes where you type the phone numbers. Also be sure that you are dialing the proper number with the area code and prefix if necessary. Be sure that AO/DI is enabled. Open ControlCenter and click the Configuration Manager icon. Click the Advanced Configuration button. Then click the ISDN Line tab. At the bottom of the "ISDN Line" screen be sure that Enable AO/DI (Always On/Dynamic ISDN) is selected. A check mark appears in the box next to the item when it is selected. Be sure that your ISDN TA is using PPP. Open ControlCenter and click the Configuration Manager icon. Then click the Advanced Configuration button. Click the Outgoing Call Protocol drop-down menu. Then click Internet Access (PPP). If your service provide does not support Reverse Charge Request, be sure that it is turned off. Open ControlCenter and click the Configuration Manager icon. Then click the Advanced Configuration button. Click the ISDN Line tab. Then click the AO/DI Settings button. In the "AO/DI Operations" section, turn off Enable Reverse Charge Request. There will not be a check mark in the box next to the item when it is turned off. If you require a long distance packet carrier for your D-channel's X.25 connection, be sure that the carrier code and packet telephone number are correct. This information is provided by your phone company. Open ControlCenter and click the Configuration Manager icon. Then click the Advanced Configuration button. Click the ISDN Line tab. Then click the AO/DI Settings button. Enter the information in the "Network Settings" section.

Solution:

Open ControlCenter and click the Configuration Manager icon. Click the Advanced Configuration button. Then click the ISDN Line tab. At the bottom of the "ISDN Line" screen be sure that Enable AO/DI (Always On/Dynamic ISDN) is selected. A check mark appears in the box next to the item when it is selected. Then click the AO/DI Settings button. In the "AO/DI Operations" section, you can also set the number of B-channels being managed by AO/DI. Click the Maximum AO/DI Bandwidth drop-down menu. If you want AO/DI to have control over only the D-channel of your ISDN line, click D-channel Only. If you want AO/DI to be able to engage one of your B-channels when necessary, click D-channel + 1 B-channel. If you want AO/DI to be able to engage both B-channels when necessary, click D-channel + 2 B-channels. If your service provider requires that you dial a number for the D-channel as well as both B-channels, also be sure that you are dialing correctly. Type a period in front of the D-channel number. Then type &, followed by the B-channel numbers, separated by &. For example, type .12625551212&12625331313&12623351212. Then finish setting up your connection as usual. Note: If you are using Windows 95, or 98 be sure that Use country code and area code is turned off. If you are using Windows NT 4 be sure that the Use Telephony Dialing properties is turned off. This item is on the same connection properties screen as the box where you type the phone numbers.

Solution:

To adjust your Dynamic Bandwidth Allocation threshold settings, open ControlCenter and click the Configuration Manager icon. Then click the Advanced Configuration button. Click the PPP Settings button. In the "PPP Mode" drop-down menu, be sure that MultiLink PPP with Dynamic Bandwidth Allocation is selected. Then click the Dynamic Bandwidth button. Your ISDN line's two B-channels are represented on the "B-channel Threshold Settings" screen. The settings that can be adjusted include: Sample Time to Add B-channel - Use the slide bar to adjust how often, in seconds, the other channel is checked to determine if this channel needs to be turned on. Sample Time to Drop B-channel - Use the slide bar to adjust how often, in seconds, this channel is checked to determine if it needs to be turned off. Threshold to Add B-channel - Use the slide bar to adjust what percentage of the other channel must be in use before this channel is turned on. Threshold to Drop B-channel - Use the slide bar to adjust what percentage of this channel must be in use before it is turned off. Note: The settings for the first B-channel can only be adjusted if AO/DI is enabled.