# Get

## Function

This API is used to obtain two-way intercom information.

## Request Message

### Parameter Description

see PreviewChannel > PTZ > Get > Parameter Description > Table 1 for parameter description.

Sample:

    POST /API/PreviewChannel/DualTalk/Get HTTP/1.1

    {
        "version": "1.0",
        "data":{
            "channel":"IP_CH4",
            "command_flag":false,
        }
    }

## Response Message

### Parameter Description

##### Table 1

Parameter | Range | Type | Description
--- | --- | --- | ---
channel | "CH1"…"CH1x", "IP_CH1"…" IP_CH1x", "WIFI_CH1"…" WIFI_CH1x" The channel names supported by the device. | string | Channel name
action | 0-1 | int | 1:open, 0:close

Sample:

    HTTP/1.1 200 OK
    Content-Type: application/json

    {
        "result":"success",
        "data":{
            "channel": "CH1",
            "action": 1
        }
    }

## Error Code

See Response Messages Body and Common error_code for more information.