This information applies to the following Htek IP phones running firmware version 2.42.6.3.36 or later:

UC926U UC926S UC924U UC924W UC923U UC921U

UC507U UC507 UC505U UC505 UC503U

Contents

Introduction

Htek IP phone supports a Panic Button that connects to the USB port of the IP phone to implement various configuration functions. It can be used in normal mode and emergency mode, with different usage scenarios. This is described in detail below.

Ways to configure

1. Connecting to the IP Phone

·Plug the Panic Button into the USB port on the back (or side) of the IP phone.

·After the connection is successful, the following message is displayed on the LCD screen: “USB Button is connected!”

2. Configuring Panic Button

It can be configured via three ways.

Configuration via web interface

1. Login: Input the IP address in the web browser. (Login name: admin; default password: admin).

2. Click Setting -> Function keys ->USB KEY

3. Choose Panic Button mode and type

4. Fill in the value (optional)

5. Click SaveSet

Configuration via phone interface

1. Click Menu -> USB ->USB KEY

2. Choose Panic Button type

3. Fill in the value(optional)

4. Click Save

Configuration via configuration files

It can be configured by modifying the P value of the parameter. After saving, upload configuration file to the server and do provision or restore the configuration file on the web page.

Panic Button Mode & Usage Scenarios

The Panic Button has two modes with three common functions.

When the phone lock is on, the Panic Button works normally, either in normal or emergency mode.

Panic Button mode

Emergency mode

The functions in emergency mode have the highest priority. When it is pressed, IP phone will immediately stop current functions, and perform the Panic Button function. When IP phone is ringing, in a call, dialing or holding, press the button, the phone will hang up current call and perform the Panic Button function.

Normal mode

The Panic Button performs the corresponding functions and it will perform the same as the DSS key, such as speed dial, intercom and direct pickup. In this mode, panic button can be used as a supplement to the dss key, it can meet the need of remote control on the phone.

When IP phone is in idle state, the phone will perform the Panic Button function.

When IP phone is dialing, the phone will not perform the Panic Button function.

When the Panic Button is set to be call function (such as speed dial, direct pickup) and IP phone is ringing or holding, the phone will perform the call function of Panic Button.

When the Panic Button is set to be call function (such as speed dial, direct pickup) and IP phone is in a call, the phone will hold current call and perform the call function of Panic Button.

When the Panic Button is set to be other function (such as local group, DND) and IP phone is ringing or holding or in a call, the phone will not perform the Panic Button function.

Common function

1. Emergency call

When there is an emergency, press this button which is pre-set to silent call, IP phone will silent call the other extension to call the police or ask for help, at the same time, the phone LCD is still in idle state, will not hear the other extension's voice, but the other extension can hear the situation. The button can be installed under the table or on the wall.

When configuring, Value means extension requested for help.

This function is not related to pbx. It is a phone function. The other extension needs to answer the phone to hear.

Extension with Panic Button Extensions requested for help Other extension

(eg.4002) (eg.4004) (eg.4006)

When silent call is on, whether 4002 press the speakerphone button, headset button, or pick up the handle, silent call will be interrupted. If want to continue the silent call, please press the Panic Button again.

2. Monitor call

When need to listen to other extension or know the current situation, press this button which is pre-set to speed dial, so that can listen to the extension without the permission, and the monitored extension's phone interface is in idle state and will not hear the monitoring extension.

When configuring, Value means extension being monitored.

This function is related to pbx, which is supported by freepbx. IP phone can hear the monitored extension without the monitored extension’s answering the phone.

Before using this feature, it’s necessary to enable Allow Silent Intercom for Clearly Devices devices feature in freepbx server first. When configuring this feature, it’s necessary to configure it as speed dial and add the feature code in front of the target number.

Extensions being monitored, meaning silently answer the call.

Extension with Panic Button Extensions being monitored Other extension

(eg.4002) (eg.4004) (eg.4006)

When monitor is on, whether 4002 press the speakerphone button, headset button, or pick up the handle, monitor will not be interrupted. 4002 can change different ways to monitor.

3. Used as dss key

As a supplement to the dss key, it can meet the need of remote control on the phone.

Usage Scenarios

At the bank

When the robber breaks in, the teller presses the panic button under the counter which is pre-set to silent call and security receives the call.

If security wants to continue listening to situation in the bank, they can use monitor call to call the teller's number.

If the teller is coerced to call another number, the silent call will be hung up and the teller need to press the Panic Button again.

At school

The teacher calls a monitor call to the classroom phone from the office to monitor the students' situation.

If student uses the class phone, the monitor call will be interrupted. The teacher can set set a dss key as BLF on his phone to monitor class phone occupancy and then press Panic Button again to continue monitor call after the class phone returns to idle.

If the teacher wants to dial another number, the monitor call will be interrupted. The teacher can press the Panic Button again to continue monitor after the call ends.