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Both B channels are connecting but everything is extremely slow what is wrong?
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Check to make sure that your ISDN line speed matches that of your local telephone company. The B channel line speed should be 64Kbps in all cases under certain conditions the telephone company may provision your circuit, or circuits within its network at 56Kbps. If this is the case your 64K connection will not work properly.
To troubleshoot this, temporarily change your line speed within your ISDN router to 56K. If everything works up to speed again, then the phone company has changed the provisioning on your circuit you should call them and report the trouble on your line.
Please contact support@cyberlynk.net for more information/help.
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Can I talk on the phone and be on the Internet at once with a single ISDN line?
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Absolutely! That's part of the magic of ISDN: since both B-channels can be used for different purposes, you can use one to talk on the phone (assuming that your ISDN modem has POTS ports) and use the other channel to go on-line! This will however temporarily limit your bandwidth to 64kbps since you will only be using one B-Channel for the Internet. Most TA's have the ability to automatically resume the Internet connection on your second channel after you're done talking.
Certain ISDN Adapters are capable of some neat tricks. For example, Some will disconnect the second B-channel if a call comes in. That means, if you log into our system with both channels (to surf the net at 128kbps) and a call comes in on the ISDN line, the Adapter will drop one of the B-channels (bringing your Internet connection down to 64kbps) and ring the phone that's connected to your Adapters POTS ports. When you hang up, the Adapter will automatically bring you back to 128kbps on the Internet.
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Do I need a special modem to call CyberLynk through an ISDN line?
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Yes, you will. Most of our ISDN customers purchase an ISDN modem from CyberLynk so we can support and configure the modem. If you purchase your modem through a consultant and that consultant configures the ISDN modem and installs it, CyberLynk can do very little when troubleshooting connection problems should they arise.
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How fast is an ISDN line?
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A standard ISDN line carries two separate channels of information, known as B-channels. Each B-channel can operate as fast as 64kbps (more than twice as fast as a normal 28.8kpbs modem). If you use both channels to connect with CyberLynk, the speed of the connection would be 128kbps, almost two and a half times faster than a 56kbps modem. Not only that, but ISDN service, because it is digital, doesn't suffer from line noise potentially slowing it down like on analog modems.
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I am trying to dial-in, but the system keeps asking me to verify my user name and password.
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This means that you have typed your username and/or password incorrectly. If you cannot remember your username and/or password please contact CyberLynk support.
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Is there expandability beyond 128Kbps with ISDN?
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Unfortunately no at least not with the normal BRI circuit that is used for Internet connectivity. There are two Bearer channels (B) with a capacity of 56Kbps or 64Kbps each depending on the Telephone company in CyberLynk coverage area ISDN B channels are 64Kbps each. By bonding the two channels together using a protocol called Multilink Protocol or MP, we are able to make use of a connection that appears as a single 128Kbps path. Through compression a user should be able to actual transfers in excess of 500Kbps remember that most files including graphics are already compressed!
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Should both B channels be connected all of the time?
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Depending on how your router is configured it may, or may not connect with both B channels. The preferred configuration would have the initial connection maintained through just one B channel. The second B channel would then connect as needed meaning that as bandwidth needs increased the second channel would connect, and as bandwidth needs decreased the second channel would disconnect. Of course this configuration would incur more connection charges as the second channel connected and disconnected on demand.
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The dialup/ISDN phone number I'm dialing into is busy.
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Please go to http://phonelist.cyberlynk.net and use the prefered phone number from the search.
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We have an ISDN router that is configured for bandwidth on demand, what does this mean?
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As mentioned earlier, most ISDN routers and modems have the capability to connect initially with only one B channel and then as needed connect and disconnect the second channel. There are typically settings within your ISDN device that allow you to set the levels at which the second channel comes up and goes down.
It is important to note that the factory settings are usually not defined in a way that will ensure a minimal phone bill for you the thresholds are set too tight causing the unit to connect and disconnect unnecessarily increasing your connection charges. Using 75% for the up setting and 25% for the down setting should be a good place to start. You will have to watch the ISDN router or modem to see just how it is connecting and disconnecting fine tune it to your satisfaction!
Contact support@cyberlynk.net for more information/help.
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What is ISDN?
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ISDN stands for "Integrated Services Digital Network" and is a replacement or addition to telephone lines you may already have in place in your location. ISDN is a type of phone service which is completely digital.
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Why are my ISDN costs so high every month? I thought that it was supposed to be less than $50 per month from Ameritech.
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The phone companies charge connection fees on an ISDN line. Each call will incur a connection charge of between $.04 and $.10 per B channel. A common ISDN BRI circuit has 2 B channels so depending on your configuration you may see a charge for just one B channel per call, or in most cases a charge for both B channels on each call. The actual rate per call will depend on whether the account is residential or business and if there is a contract in place.
In Illinois there is also a per-minute charge associated with ISDN! Depending on which band your call is from you can expect to see $.015 to $.105 per minute per B channel.
It is best to check with your local telephone company to determine your ISDN charges ahead of time.
If you are setup for the BussinessLynk ISDN and your phone bill is still very high please contact support@cyberlynk.net. This type of connection an always on connection.
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Why do I get a "DNS" or "Host not found" error?
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A DNS error indicates that your web browser could not look up the numeric equivalent (IP address) of the text address (Domain or URL) that was entered into the location box or in the link you clicked on. This could be for several reasons:
1. The address of the site was misspelled by the person entering it in the Location blank, or by the person who set up the link.
2. You are actually not connected to the Internet, and so the address couldn't be found. Some dialers, especially the Windows 95/98 are particularly prone to not dialing in automatically. If this happens, try dialing in with your dialer utility before running your Internet Broswer.
3. You have the DNS server addresses entered incorrectly in your dialer configuration. Check the configuration of your dialer (the program you use to connect to the Internet) and make sure the DNS information is correct.
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