# Associated Directory Numbers

## Purpose

The Associated Directory Numbers form allows you to set up a Hotline or CPN Substitution for a specified directory number (DN). You can also use this form to program a billing number for each DN. See Call Billing for SIP Gateway for details.

## Conditions

- A Multi-Device
  This Service Level indicates that the directory number (DN) is assigned to a user that has only basic telephony functionality (e.g., emergency or attendant calls) until programmed as a member of a Multi-Device user group or suite. The DN does not use an IP User License. However, the group or suite has a Multi-device Users or Multi-device Suites license which one person can use at a time in order to receive full telephony service. DN can be programmed as the originating or destination number, provided that the DN is the prime member of a Multi-device User Group.

- Billing or Associated Number field can be blank, but not both.

NOTE: If no billing number is configured for a user (the Billing Number field is blank), the Default Billing Number for the Network Zone will be charged (even if the Associated Number is configured). See Billing algorithm for details.

## Field Descriptions

Parameter | Description | Default Value
Directory Number | The directory number (DN) of the originating device—that is, the DN of the hotline or the DN on which CPN substitution is performed. See Hotline for a list of devices that can be programmed as a hotline. |
Associated Type | Indicates whether the DN is a hotline or the subject of CPN Substitution. |
Associated Number | The answer point of the hotline or the digits to substitute for CPN Substitution. Up to 26 digits can be entered for both Hotline and CPN Substitution. For CPN Substitution, only the digits 0 to 9 are allowed. See Hotline for valid answering points. This field can be left blank when the Associated Type is CPN Substitution but not when it is Hotline. N OTE: For CPN Substitution, any entry saved or deleted in this field is copied into or deleted from the CPN Substitution field in the User and Services Configuration form, and vice versa. |
Billing Number | The billing number for the DN of the hotline or the DN on which CPN Substitution is performed. Up to 26 digits can be entered; valid digits are: 0 to 9. This number can be different than the Associated Number. For CPN Substitution, any entry saved or deleted in this field is copied into or deleted from the Billing Number field in the User and Services Configuration form, and vice versa. NOTE: After a database restore from a pre-7.0 SP1 MiVoice Business system, this field will be configured with the Associated Number value (if the Associated Type is CPN Substitution). For Hotline, this field will be blank. |