Speech recognition

When utilizing the call recording feature, including for forwarded calls, the Call Recordings resource (/record/) will reflect the record_transfer attribute.

record_transfer

bool

This flag indicates whether recording is enabled for call forwarding. If false, the channel of the extension number is recorded; if true, the opposite channel from the extension is recorded.

With stereo recording combination, depending on the record_transfer flag, if recording the channel of the extension (record_transfer = false), the voice from the extension will be on the left side, and if record_transfer = true, it will be on the right side.

Also, real-time speech recognition based on events is possible:

• Speech to text conversion (speech to text) section 2

Post-event speech recognition can be performed by requesting call recordings filtered by start_datetime and end_datetime.

To exclude internal calls (from extension to extension), you can use the following logic:

For flow = out, ignore if dest_number contains the client prefix or, in rare cases, it may just indicate an extension, for example:

This can be interpreted as an outgoing call from the PBX extension to extension 101, where flow = out always signifies the source of the call is an extension.

For flow = in, exclude if source_number contains the client prefix or, in rare cases, it may just indicate an extension, for example:

This can be interpreted as an incoming call from extension 101, where flow = in always signifies the recipient is an extension.

The client's prefix and the length of its extensions can be found in the resource /client/{client_id}/client/, in the "prefix" and "extension_len" fields, or can be determined by a regular expression (regex):