# DAMM TetraFlex® PTT — App for Damm TetraFlex network

> App for Damm TetraFlex network (iPhone/iPad app by Damm Cellular Systems A/S.)

- Source: https://appshunter.io/ios/app/damm-tetraflex-ptt/id961012104 (this page in markdown: same URL + `.md`)
- Developer: [Damm Cellular Systems A/S](https://appshunter.io/developer/961012103)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 51 MB
- Languages: Danish, English, German, Italian, Russian
- Released: 2015-08-28
- Data updated: 2025-09-03
- User reviews in markdown: https://appshunter.io/ios/app/damm-tetraflex-ptt/id961012104/reviews.md

## What is DAMM TetraFlex® PTT?

The TetraFlex® PTT App is a DAMM application running on iPhone and iPad devices enabling users to log on to the DAMM TetraFlex® network as a registered soft terminal (client) being a fully integrated part of the TetraFlex® communication system.

The TetraFlex® PTT App registers in the TetraFlex® system similar to other TETRA or DMR terminals with its own SSI number and user number set up in the subscriber register with a Profile associated and with defined Group(s). 

The TetraFlex® PTT App will be available from software version TF 7.78 onwards. The TetraFlex® PTT App does communicate to all terminal types of the subscriber register. This includes also the new unified numbering, allowing call forwarding or simultaneous ringing of different devices.

The TetraFlex® PTT App uses similar features as already know by the DAMM dispatcher. Users may therefore already be used to functionality and operation.

Note: Without an existing TetraFlex® infrastructure you cannot use this application.

Functions and Features
The TetraFlex® PTT App supports the following modes of communication:

1.	Can make and receive group calls to and from TETRA or DMR Radios, other soft terminals, DAMM Dispatchers and other compatible units connected to the DAMM TetraFlex® infrastructure.

2.	Simplex and Duplex calls with TETRA or DMR Radios, other soft terminals, DAMM Dispatchers and other compatible units connected to the DAMM TetraFlex® infrastructure.

3.	SDS to and from TETRA or DMR Radios, other soft terminals, DAMM Dispatchers and other compatible units connected to the DAMM TetraFlex® infrastructure

The TetraFlex® PTT App act as a fully integrated part to the DAMM TetraFlex® system can thereby access all TetraFlex® gateways and can be monitored and recorded by the TetraFlex® Voice and Data Log system.


## Version history (last 5 releases)

### 8.7.471550 — 2022-03-25

The SOS/Emergency button was added in this version.

### 8.7.432920 — 2021-07-14

Removed the limitation of max 6 scanned groups. Allows to attach the max number of groups supported by the connected Terminal Gateway

### 8.7.419220 — 2021-04-20

The microphone audio is now using the hardware sampling rate

### 8.7.414680 — 2021-03-18

DGNA Support
Group scanning priority support
Capability to add not scanned groups
Support for Incoming Direct Individual Simplex Calls

Support for Outgoing Individual Simplex Calls
Release the running calls when an emergency call is started
Use the outgoing call configuration when starting an emergency call

### 7.79.235240 — 2018-02-26

Updated version for iOS 11

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2025-09-03.*