Dialogic 05-0867-005 Appendix E - Establishing ISDN Cable Connections

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Appendix E - Establishing ISDN CableConnections

This appendix explains the basic principles of ordering ISDN service and

establishing a connection between the Dialogic Digital Network Interface boards

and the Network Termination Unit (NTU).

When ordering your ISDN service from a carrier, keep the following points in

mind when talking to a service representative:

• Be specific when describing the kinds of service options you want. Your

carrier may offer options that the carrier representative did not mention.

• Find out as much as you can about details of the turn-up process.

• Be sure to find out which aspects of service your carrier is responsible for and

which aspects are your responsibility. Carriers may offer end-to-end

coverage, or responsibility for the lines may lie with several different

companies. Not knowing who to contact in the case of difficulties can delay

repairs and impact productivity.

• Have the manufacturer's name, equipment numbers, and equipment

registration numbers for the customer-site equipment you are installing or

have installed.

You may want to consider hiring a third-party telecommunications or telephone

consultant to coordinate service with a carrier. Or, you might delegate parts of the

service acquisition process to others. Though these options may involve additional

costs, the installation process is streamlined as a result of enlisting the help of

someone knowledgeable about the service-ordering procedure.

The Network Termination Unit (NTU) is usually the first piece of equipment on

the customer premise that connects to the ISDN line. Customer equipment must be

cabled to the NTU. Dialogic does not supply a board to NTU cable. You must