> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/voice-and-media/adding-capture-dtmf-script.md).

# Adding Capture DTMF Script

> **Applies to:** Tmedia 2.9, 2.10, 3.0, 3.1

This arcticle describes how to add a **Capture DTMF** script to any Routing script.

**Script Description**

If the called number is a specific value, it will play an announcement and wait to capture digits.

1. Call 1-800-999-4444
2. Hear tone
3. Enter 2 digit switch number optionally followed by #
4. Hear tone
5. Enter TG number – can be 4 or 5 digits depending on which switch the call goes to
6. Hear tone
7. Enter destination number

The call then routes to a TG (NAP) based on the 2-digit switch number, and the INVITE contains the TG number in the TGRP= parameter. Sample INVITE with TGRP= INVITE sip:18003608022\@192.168.101.180;tgrp=98741 SIP/2.0 This will work with any TMG device with a license to play files. For ProSBC, it requires transcoding devices.

**Add Capture DTMF Scripts in system**

Download this file:

| Capture DTMF Script                                                                |
| ---------------------------------------------------------------------------------- |
| \*[capture\_dtmf.rb](https://docs.telcobridges.com/w/images/a/a7/Capture_dtmf.zip) |

Then upload it in the system with these instructions: [Import\_Customized\_Routing\_Script\_C](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/import-customized-routing-script/README.md)

**Setting up Capture DTMF Scripts**

To set up a Filter, the main script needs to be modified. The main script can be either simple\_routing.rb, simple\_routing\_sbc.rb, or any other script.

First, go to the routing script section of the Web portal

```
Gateway -> Routing scripts -> Example Scripts -> simple_routing.rb [Edit]
```

Three things need to be added. At the start of the script:

```
require 'capture_dtmf'
```

In the main class:

```
include CaptureDTMF
```

```
after_filter :method => :capture_dtmf
```

The final script will look like this:

```
require 'base_routing'
require 'capture_dtmf'

class SimpleRouting < BaseRouting
  include CaptureDTMF

  route_match :call_field_name => :called
  route_match :call_field_name => :calling
  route_match :call_field_name => :nap
  route_remap :call_field_name => :called, :route_field_name => :remapped_called
  route_remap :call_field_name => :calling, :route_field_name => :remapped_calling
  route_remap :call_field_name => :nap, :route_field_name => :remapped_nap

  after_filter :method => :capture_dtmf
end
```

**Upload audio file**

The script will play a tone for the user to ask them to enter a dtmf string. This show how to add the default one which can be downloaded here:

| Sample Tone File                                                                                   |
| -------------------------------------------------------------------------------------------------- |
| \*[fen-tone-400hz-300ms.wav](https://docs.telcobridges.com/w/images/5/56/Fen-tone-400hz-300ms.wav) |

1. Click **Audio Prompts** in the navigation panel
2. Click **Browse** and select 'fen-tone-400hz-300ms.wav'
3. Click **Upload**

See instructions here: [Toolpack:Configuring\_Audio\_Prompts\_C](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-audio-prompts/README.md)

However any G.711 alaw or G.711 ulaw wav file can be added to the system to be played: you need to edit the capture\_dtmf.rb script with the appropriate wav file.


---

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