Announcement Entry

The Announcement Entry object configures the attributes of each audio file as well as the location of where the audio files are stored (NFS Server or SD Card). To be able to download an audio file such as a .wav or .vox file, each audio file to be downloaded has to first be added as an Announcement Entry. Once the file has been added as an Announcement Entry, it can then be downloaded to the IMG 2020. The Announcement Entry is created under the Announcement Object and as each Announcement Entry is created, it is added to the Object Table of the Announcements object. Refer to the information below.

Web GUI Page

Dialogic > Files > Announcements > New Announcement Entry

Maximum Objects

Up to 1023 Announcement Entries can be added. Regardless of the number of entries supported, the IMG 2020 can store and play up to 3 hours of announcements.

Field Description

Announcement ID

The Announcement ID field is a drop down menu which ranges from 1-1023. The ID is used internally on the IMG 2020 to keep track of each individual Announcement Entry. To modify the ID, click in the Announcement ID field and select a different ID from drop down menu.

Primary Location ID

The Primary Location ID field has a drop down menu displaying the ID's of the different location objects configured under the Media File Location object. The two location objects, NFS Locations and Local Location, configure the information required to retrieve the audio files. Select from the drop down menu the ID of the primary location that the audio files will be retrieved from. (NFS Server or SD Card)

Secondary Location ID

The Secondary Location ID field has a drop down menu displaying the ID's of the different location objects configured under the Media File Location object. The two location objects, NFS Locations and Local Location, configure the information required to retrieve the audio files. Select from the drop down menu the ID of the secondary location that the audio files will be retrieved from in the case when the Primary Location has failed or cannot be communicated with. (NFS Server or SD Card)

File Name

Enter the specific name of the audio file being added. The audio filename will have either a .vox or .wav extension on it. The extension does not need to be added to the File Name field.

File Format

Select from drop down list the format of the announcement file. Refer to description of supported formats below:

Raw Data Format - The RAW Data Format commonly called .vox file contains encoded speech data. Select Raw Data Format if using .vox files. The files available on our support website are all .vox formatted files.

Wav Format - The .wav is a newer format that includes a header containing information about the encoded speech data that follows. If the file is a .wav file, select Wav Format.

File Encoding Format

To encode sound as data, it is necessary to use a compression/decompression algorithm. Select from drop down menu the compression/decompression algorithm required.

G711 Alaw - A-law is the format used for transport of speech data on telephone networks around the world except America and Japan. G.711 a-law uses 8 data bits per sample, at a rate of 8000 samples per second, hence 64 kilobits per second. The sound quality is equivalent to linearly sampled 14 bits at the same sampling rate. This is commonly supported by both Raw Data Format (vox) and .wav format.

G711 Ulaw - U-law is the format used for transport of speech data on telephone networks in America and Japan. G.711 u-law uses 8 data bits per sample, at a rate of 8000 samples per second, hence 64 kilobits per second. The sound quality is equivalent to linearly sampled 14 bits at the same sampling rate. This is commonly supported by both Raw Data Format (vox) and .wav format.

G726 32 Kbps ADPCM - G.726 is an ITU-T Adaptive Differential Pulse Code Modulation waveform speech codec which uses a 32 Kbps transmission rate. This format doubles the network capacity by using half the rate of a G.711 codec. G.726 is primarily used in international trunks to save bandwidth. As specified in RFC 2422- Toll Quality Voice. Converts 64 kbit/sec A-law or U-law to 32 kbits/sec. Supported by Raw Data Format (vox)

32 Kbps OKI ADPCM - OKI ADPCM has become an industry standard for storage of speech signals at slightly reduced data rate of 32Kbps. This coding method is differential, and uses four data bits per sample, sampled at 8000 samples per second. The supported file format is Raw Data Format.

24 Kbps OKI ADPCM - OKI ADPCM has become an industry standard for storage of speech signals at slightly reduced data rate of 24Kbps. This coding method is differential, and uses four data bits per sample, sampled at 6000 samples per second. The supported file format is Raw Data Format (vox).