BusinessPhone Communication Platform 4.0
Facilities

## DTMF Tones

## Definition/Use

During speech connection the user can send and receive DTMF (=Dual Tone Multi Frequency) tones from/on the telephone.

## Operation

During speech connection the user can send and receive DTMF tones from/to the telephone, independent if it is an incoming or outgoing, internal or external call.

This is very useful when using DISA, Automated Attendant, call back services or retrieving messages from an external mailbox.

## Capacity/Limitations

It is possible to send and receive DTMF-tones from/to any kinds of System Telephone and Analogue DTMF Telephone.

No TCD check is performed for the dialled DTMF digits.

## Programming

0121 |  | DTMF to instrument?

Peripheral (external) units can be connected to an extension position and be controlled by DTMF-tones e.g. entry phone.

This command is used to determine whether digits dialled by the call partner can be transmitted as DTMF-tones to the connected unit.

Default value: NO

The times determined by means of commands 2009 and 2010 are used both for external traffic and for transmission to the extension equipment.

These commands are only accessible via BMS/RASC:

1313 |  | DTMF signal scheme

2026 |  | Attenuation for DTMF-signalling

2610 |  | Number of DTMF tones

2611 |  | Level

2612 |  | Level difference

2613 |  | Signal time

2614 |  | Pause time

## Equipment

None

Revision: D © Ericsson Enterprise 2003