# DTMF Keypad Support

## Description

DTMF Keypad Support lets ONS extensions use all 16 keys on a 4x4 DTMF keypad. The additional row of four keys ( ABCD) is used to access features in the system. The user can translate the ABCD keys to other digit strings (such as Speed Calls). As a result, different users may have different meanings for their ABCD keys.

## Conditions and Feature Interactions

- ABCD are not valid extension digits.

- The ABCD keys will only be translated to their equivalent COS defined values within the system dialing state.

## Programming

- Class of Service Options form

- Enter the translated value for the ABCD keys. Each field will accept up to seven digits.

## Device Support

All ONS devices

## Operation

None