Troubleshooting 7-7
Depending upon the location of the destination you are dialing, there may be an incompatible local or toll tele- phone company. Though this is uncommon, if you suspect a telephone company problem when dialing local or toll data connections, contact your local telephone company and have it verify that you can dial a data call to the desti- nation telephone number.
7.If you are able to establish a data connection, in which the
■There is a difference in the local and remote B channel data rates.
■There is a mismatch in the data communications protocols (such as the IP address and configuration).
■There is an interoperability mismatch between the local and remote applications.
■Make sure that the local and remote data applications have communication capability and are properly configured. Once you have verified that communication capability exists, make sure that the B channel call data rate is the same as the remote destination B channel call data rate. The default B channel call data rate used by the ISDN modem is 56 Kbps. Under some circumstances, you may need to increase the B channel call data rate to 64 Kbps at both ends of the connection.
8.Use the diagnostics function available in the Windows and Mac- intosh versions of the configuration software to test your ISDN connection. For PCs, see the “Testing the ISDN switching con- nection” section on page
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