The function key can be configured via:

• Press the function key (When not configured)
• Handset Menu - Settings - Display & Keypad - Feature key

¹ = Handset software 13.04 or higher and DECT system software 2.62 or higher

The Feature key configuration can be protected with a PIN code. The PIN is separate from the handset PIN. Entrance to the PIN setting is inside Function key configuration. PIN setting is visible as last field (Display_1)

Rules for PIN protection:

• Default PIN is: No PIN - field is empty,
• If there is no PIN, it is possible to visit configuration of the feature key without validating the access,
• An empty PIN field is valid and allowed setting at saving,
• Entered digits are visible,
• PIN length: minimum is 4 digits, maximum is 8 digits,
• PIN is defined, change configuration will ask for PIN (Display_2)

In this mode the Feature Key behaves like the talk/handsfree key. 

There are no additional settings for this mode (Display_1).

This mode allows users to assign a number to the function key

• In Idle starts call via (Display_1)
  • Earphone
  • Handsfree

Users can enter number via keypad or copy from directory

Saving with empty number editor is possible only if feature is deactivated. Otherwise, negative popup is shown.

User can select Speech path that the call will start in, between Earpiece and Handsfree. If a headset is connected and Speech path is set to earpiece, the call will be started on the headset.

In this mode Feature Key is working as an alarm trigger.

There are two independent alert configurations. Each configuration has its own settings.

• Short press of feature key (SFK)
  • On/Off
  • Call to: < Phone number>
  • Alarm delay <Off, 5, 10, 15, 20 sec>
    • Melody
    • Volume
• Long press of feature key (LFK)
  • On/Off
  • Call to: < Phone number>
  • Alarm delay <Off, 5, 10, 15, 20 sec>
    • Melody
    • Volume

Remarks

1. When feature key and alarm mode are set, at least one alarm type has to be activated

Alarm mode call

Pressing of Feature Key will result in, depending on settings:

1. An active connection to base station is disconnected
2. An incoming call in progress, is answered and disconnected (to release line)
3. HS might start playing alarm melody/sound via loudspeaker for configured time slot.
4. Blinking Spot LED <<<depends on hardware>>>: Spot LED can be activated to blink in SOS sequence (with Morse alphabet, 3x long, 3x short, 3x long)

Alarm mode call is set up to a number defined in settings. Base station has information that it is a special call to avoid forcing user to select line (relevant for multi-line systems)

As a consequence of call being regular call, it is possible to interrupt it by the same events that interrupts regular call (including Feature key).

Handset blinks with spot LED, if configured by user <<<depends on hardware>>>

Remarks

1. If the Alarm mode is set but the number is empty or activation for key press(SP/LP) is not configured (Possible from factory settings), then pressing feature key will open the configuration menu

2. If handset is not synchronized to base station, Display_6 is shown instead of call setup.

3. If pre alerting is in progress, it is possible to change alert (if started with LFK, can be changed to SFK and if started with SFK, can be changed to LFK) simply by pressing appropriate key. Using SFK or LFK when the corresponding procedure is ongoing. will not result in restarting pre alert.

Pre Alert notification

Pre alert notification is a special state before alert-call is performed. It is ignored if alarm delay is set to 0 sec.

In this state:

• Handset plays melody with configured volume for the time selected by user,
• Handset blinks with spot LED, if configured by user <<<depends on hardware>>>,
• Handset shows Display_1,
• Handset counts down to 0, afterwards call is started.
• Name replacement is not supported in this state

Procedure can be canceled by softkey "Cancel", or change alert type (LFK / SFK), no other events should stop pre alerting.

Procedure can be skipped by softkey "Call now" / SEND key / center key, in this case counting is cancelled and call is started immediately.

This feature is supported when Handset software 13.04 or higher and DECT system software 2.62 or higher is used.

Short press and long press are supported, an MQTT message will be send to an configured MQTT server.

Feature Key / System action notification

When properly configured, following notification will be sent via MQTT that "Feature key" has been pressed together with type of the event (short press or long press) on the following topic:

<dm_id>/<sip_id>/as/hs/noti/hs_feature_key

Example notification:

local/4020/as/hs/noti/hs_feature_key {"msgId":"hs_event_32393","payload":{"sip_id":"4020","press_type":"short"}}

There is no visual nor acoustic feedback after pressing the key. Only regular "key click" tone is played (if standard "Key tones" option is switched on).

Repeated triggers in very short succession are ignored: if Feature Key was pressed multiple times within 1 second window, only 1 notification will be sent

Feature Key / System action notification JSON scheme

{
    "$id": "http://example.com/schema_feature_key_notification",
    "$schema": "http://json-schema.org/draft-07/schema",
    "type": "object",
    "required": [
        "msgId",
        "payload"
    ],
    "examples": [
         {
            "msgId": "hs_event_1",
            "payload":
            {
                "sip_id":"4020",
                "press_type": "long"
            }
        },
        {
            "msgId": "hs_event_2",
            "payload":
            {
                "sip_id":"4020",    
                "press_type": "long"
            }
        }
    ],
    "properties": {
            "msgId": { "$ref" : "file:json_ref/msgid.json"
        },
        "payload": {
            "$id": "#/properties/payload",
            "type": "object",
            "description": "Contains notification message payload",
            "required": [
                "press_type",
                "sip_id"
            ],
            "properties": {
                "sip_id": { "$ref": "file:json_ref/sip_id.json" },
                "press_type": { "$ref": "file:json_ref/press_type.json" }
            }
        }
    }
}