ENA Configuration - AlphaCom mode

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AlphaCom with ENA Amplifiers

This article describes the configuration required for a Exigo Network Amplifier (ENA) to operate with an AlphaCom server. The ENA Amplifiers are configured through their web interface. The AlphaCom server is configured using the PC tool AlphaPro.

Quick getting started guide

To make an ENA Amplifier operational there are essentially four parameters to set in the web interface of the amplifier. Log In to the amplifier, go to Station Main > Main Settings, and:

Set Station Mode = "Use AlphaCom"
Configure the IP Settings (IP address) of the amplifier
Enter the AlphaCom IP-address
Enter Ch1 Directory Number

The Directory Number must also be defined in the AlphaCom Server using the AlphaPro configuration tool.

The station web interface

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The user interface and parameters displayed in the following sections are dependent on the Turbine station type (Compact, Industrial or Ex) selected.

Station Main tab

Station Information

Log In to the station
The Station Information page will now be displayed, showing the IP station configuration and status.

The Station Information page

Main Settings

Click Station Main > Main Settings to access the page for configuring station mode and IP parameters.

Station Mode: Select the Use Alphacom radio-button.

Product Model And Accessory: Depending on the type of Turbine hardware, there are different Product models and accessories to choose from. Find your model here: Turbine Station Models

Registration Settings:

AlphaCom IP-address: Enter the IP address of the AlphaCom server to which the IP station is to be registered
Directory Number: Enter the directory number of the station. This must match the directory number defined in the AlphaCom server

- If a directory number is not entered, the station will register with its MAC address. The MAC address is found on the Station Information page and needs to be entered in the AlphaCom server using the AlphaPro PC tool

IP Settings:

DHCP – Select this option if the IP station shall receive IP Settings from a DHCP server.
Static IP – Select this option if the IP station shall use a static IP address. Enter values for:

- IP-address

- Subnet-mask

- Gateway

- DNS Server 1 (option for network administration)

- DNS Server 2 (option for network administration)

- Hostname (option for network administration)

Read IP Address: Check the Read IP Address box to enable an unregistered station to speak the IP address when the call button is pressed. "Read IP Address" is default enabled.

Enable RSTP (for Industrial & Ex stations): Check the Enable RSTP box to enable RSTP. RSTP is only required when using redundant networking

Ethernet Speed 10 Mbits/s: Default Ethernet speed is 100 Mbit/s unless switch is configured to 10 Mbit/s

Click Save followed by Apply to apply the new configuration settings.

Station Administration tab

Reboot

Reboot system: Perform a full Linux reboot. No configuration is lost
Reboot main application: Perform a restart of the intercom application. No configuration is lost
Factory reset: Set all parameters to Factory Default values. The station will get static IP Address 169.254.1.100.
Factory reset with DHCP: Set all parameters to Factory Default values. The station will get IP Address from DHCP server. If no DHCP server in the network, it will get a random 169.254.x.x IP address.
Clear local ZAP profile: Not used in AlphaCom mode
Delete ZAP data.lua: Not used in AlphaCom mode

Logging

From the web interface of the station it is possible to activate logging, which can be useful for debugging and troubleshooting purposes. See Logging - IP Stations for more information.

Change Password

The password for web access and for accessing the display setup menus can be changed, see Password (IP Stations).

Backup and Restore

From the web interface of the station it is possible to backup and restore the configuration data. See Backup and Restore for more information.

Manual Upgrade

The software of the station can be upgraded via the web interface. see Turbine_Software_Upgrade for details.

Advanced AlphaCom tab

Audio

To configure audio settings select Advanced Alphacom > Audio from the menu

Select or set values for the parameters:

- Volume Override Level

- Microphone Sensitivity

- Automatic Volume Control

- Debug Automatic Volume Control

- Conversation Mode

- Audio profile

- Audio source

- Line Out Source

Volume Override Level: Select the Volume Override Level in the range 0 to 8 from the drop-down box. The default setting is 8. This setting determines the volume to be used in the station when receving audio and the Volume Override feature is activated, see Volume Override for more details.

Microphone Sensitivity: Select the sensitivity level in the range 0 to 7 from the drop-down box. The default setting is 5. If used as a local PA panel, a setting in the 1 to 3 range will reduce the chance of acoustic feedback (howling)

Volume Control Ch1 & Ch2: Offset Gain (default routed to Amplifier/Speaker). Valid range: -62 to +24 dB

NOTE!This feature must be used with caution as incorrect settings may severely degrade the performance of the echo-cancelling algorithm.

Automatic Volume Control: Check the box to enable automatic volume control that is adjusted according to the noise level

Debug Automatic Volume Control: Check the box to show current volume level on OLED display

Conversation Mode: For this parameter, there are five options:

Full Open Duplex: Normal mode with echo cancellation.

Robust Duplex: Option used when open duplex fails due to excessive speaker loudness, microphone overload or very high nonlinear distortions.

Half Duplex Switching: Switches speech direction depending on who speaks the loudest.

Push-To-Talk: Half-duplex communication. Initially the microphone is shut off. Push the M-button to open the microphone, and release to listen. (Only applicable to stations with M-key)

Open: Full Open Duplex without echo cancellation

Audio Profile: This parameter has the following options:

Normal

Noisy Environment

Very Noisy Environment

Advanced. Note!: Advanced options are for experienced users only! Incorrect settings may severely degrade the acoustic performance and intelligibility. Use with care!

See Turbine Audio Profiles for more details

Audio Source: This parameter has the following options:

Normal Microphone

Line In (for Turbine Extended intercoms only)

Line Out Source: Let you choose if the Speaker signal (the VoIP stream from AlphaCom) also should be played on the Line Out output, or if the Microphone signal should be routed to the Line Out output.

When used with an external amplifier (and speakers), use Speaker. When using the built-in microphone as an input to another system, use Microphone.

I/O Settings

These settings let you choose if an I/O should be used as an Input or as an Output. By default all I/O's are set as Inputs.

Select Advanced AlphaCom > I/O Settings from the menu

Select either Input or Output options from the drop-down box for I/O Pins 1 to 6.

See also the article Turbine Inputs and Outputs in AlphaCom.

OLED Labels

See article OLED Labels on how to configure the display in the station models TCIS-4 and TCIS-5.

Address Book

See the article Address Book on how to configure the address book of the station models TCIS-6 and TCIV-6.

Keyboard Settings

Applies to the station models TFIE-x (Industrial station) and TFIX-x (Explosion proof station). See article TFIE Keyboard Settings for more details.

Sound Detection

The Sound Detection, also known as Voice Activity Detection (VAD) samples the audio level from the microphone located in the IP Station. If the audio level meets defined criterias an action in AlphaCom can be triggered.

Time Settings

Select Advanced AlphaCom > Time Settings from the menu

Time Settings: You can enable Network Time Protocol, select the time zone and set the hostname or the IP address of the NTP server.

Advanced Network tab

SNMP

A set of SNMP functions are available in the IP station. SNMP (Simple Network Management Protocol) is a protocol for centralizing the management of devices in IP networks.

See SNMP Settings for futher information.

802.1X

IEEE 802.1X is an IEEE Standard for port-based Network Access Control (PNAC). It provides an authentication mechanism to devices wishing to attach to a LAN, either establishing a point-to-point connection or preventing it if authentication fails. For details on configuration, see IEEE 802.1X.

Firewall

All IP Stations have an embedded firewall. See Firewall for details.

Log in to the Amplifier

Access the amplifier by logging into the web interface using a standard web browser:

1. Open a web browser on your PC

2. In the browser’s address bar, type the IP address of the amplifier. The login page will be displayed.

3. Enter Username and Password. Default username: admin. Default password: alphaadmin

The information page will now be displayed, showing the main configuration and status.

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To find the IP address of the amplifier, use the Menu Selection Knob on the front of the amplifier, and navigate to Information > Network.