Hayes Microcomputer Products DIVA T/A ISDN manual North America only

Using EZ-ISDN or ISDN Ordering Code (IOC) to order your ISDN Line

(North America only)

We highly recommend that you use our toll free ISDN ordering service to make sure you get the correct ISDN line the first time. This service is free to our customers. Dial 1-888-800-DIVA.

EZ-ISDN / IOC simplifies the ordering of your ISDN line. It lets you use simple codes to order pre-configured packages of ISDN features and services.

The North American ISDN User’s Forum (NIUF) and Local Exchange Carriers (LEC) administer the assignment of codes. Bellcore administers the National ISDN Ordering Code (IOC) process.

We recommend the use of the following ISDN Ordering codes:

•IOC “S” offers basic voice/data features without the advanced calling features described below. If you select this option, make sure to get Additional Call (ACO). ACO is required for Call Bumping (also known as Dynamic Bandwidth Allocation-- DBA) and Call Waiting to work correctly. IOC “S1” includes ACO, however it is not supported everywhere.

•EZ-ISDN1 (or IOC: “U”) adds voice/data to both B-channels. The Advanced calling features such as Call Conference, Call transfer, etc., are only available on one B-channel.

Note: Calling Features only apply to DIVA T/A models equipped with analog ports. For more information on Calling Features, see page 100. For more information on analog device support, see page 98.

• EZ-ISDN 1A (or IOC: “V”) adds VoiceMail to EZ-ISDN.

•EZ-ISDN 3 or 3A adds Always On/Dynamic ISDN (AO/DI) support.

Note: If you want to use the DIVA T/A’s Calling Features, ask your ISDN service provider for the values of the Feature Keys. You need these values to ensure that the DIVA T/A has full access to these features. Refer to the section “Feature Key Values” on page 102 for more information.

DIVA T/A ISDN Modem User’s Guide 8