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ENA Advanced configuration mode (SIP)

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The ENA Amplifier is configured through its web interface. This article describes what configurations become available when the advanced configuration mode is enabled.
To enable advanced configuration mode, go to Main > Recovery, and under Preferences type the offline password (default = 1851), tick the checkbox and click save.

SIP Configuration

DAVC

The DAVC Settings page


Distributed Automatic Volume Control (AVC) Configuration:

  • Enable Distributed AVC: Activated DAVC when checked
  • Device is AVC Receiver: This device is a "AVC Receiver"
  • Device is AVC Source: This device is a "AVC Source" (listening microphone)
  • Master Volume [-40 - 2] dB: Sets the base gain when the "AVC Receiver" is an ENA Amplifier. Set a low base gain when using "Positive Mode", and a high base gain when using "Negative Mode".
  • Enable AVC Algorithm: The AVC Algorithm must be enabled either on all AVC Sources or on all AVC Receivers


AVC Algorithm (visible only when Enable AVC Algorithm is checked):

  • Adjustment Mode:
    • Positive Mode: Gain adjustment is from zero at AVC threshold level and adjusted positive. AVC Receiver should have a low base gain.
    • Negative Mode: Gain adjustment is from zero at AVC max level and adjusted with negative gain downwards. AVC Receiver should have a high base gain.
  • Lower Threshold [-95 - 0 dB]: The microphone signal level where AVC starts to work. Below this level no adjustment is done, and Audio Receivers should work on default base gain
  • Upper Threshold [-95 - 0 dB]: The microphone signal level where AVC stops to work. Above this level, no adjustment is done. The difference between upper and lower threshold also defines the working range for AVC gain adjustments. In negative AVC mode this also defined the ambient level where configured base output gain is reached (offset adjustment is zero)
  • Attack Rate [0.1 - 200 dB/sec]: This determines how quickly the AVC adjusts gain on raising ambient audio level
  • Decay Rate [0.1 - 200 dB/sec]: This determines how quickly the AVC adjusts gain on falling ambient audio level
  • Hysteresis [0.00 - 6.00 dB]: Hysteresis around previous set ambient audio level before doing adjustments
  • Far-End Lockout Time [0.0 - 1.0 sec]: When playing audio in AVC Zone (far-end-signal) all AVC adjustments are locked. When there is a pause in far-end-signal, adjustment commences after this lockout-time

AVC Source Devices (available only when Device is AVC Receiver is checked):

  • Source Selection Strategy: The AVC Receiver will receive ambient audio levels or Gain adjust values from a number of AVC Sources. This configures the selection strategy for final gain adjusts on AVC Receiver.
    • The different settings are: Highest, Average, Average Mid. "Average" requires two or more AVC Sources. "Average Mid" will remove high and low values if more than 4 AVC sources, and average rest.
  • Source Number: The directory Number of the remote microphone devices
  • Description: Type a name/description for the device.
  • Audio Channels: Which audio channel(s) on this device should be effected by signals from the remote AVC Source

AVC Receiver Configuration (available only when Device is AVC Source is checked):

  • Enter the IP Address of the "AVC Receiver" and a descriptive name. Press "+" to add, then Save.
Note icon Host name is not supported, only IP Address. Due to this, the AVC Receiver should have static IP address


Note icon On the AVC Receiver, UDP port 5035 must be enabled in the Firewall


Multicast Paging

Configuration page for Multicast Paging


  • Enable Multicast paging: When enabled, the station is capable of playing audio received as Multicast
  • Enable Order Priority:
    • Enabled: If the station is exposed to two (or more) multicast VoIP streams at the same time, and the VoIP streams have the same "Priority", the VoIP stream with the lowest "Order" priority number will be played.
    • Disabled: The "Order" will be ignored. If the station is exposed to two (or more) multicast VoIP streams at the same time, and the VoIP streams have the same priority, the first received VoIP stream will be played. Subsequent VoIP streams will not be played.
  • Label: Any descriptive text
  • Listening Address: The multicast IP address that the station shall listen to, e.g. 239.195.124.240. Multicast IP addresses are in the range from 224.0.0.0 to 239.255.255.255.
  • Port: The port number must be within the port range 61020-61250, recommended range is 61080-61250. Using odd number for port is not recommended.
  • Codec: Select between codecs G.711a, G.711u, G.722 and G.729
  • Priority: Select which priority mechanism should apply to this multicast VoIP stream. Options are LOW, NORMAL, HIGH (default), and EMERGENCY. See more details below.
  • Order: If the station is exposed to two (or more) multicast VoIP streams at the same time, and the VoIP streams have the same "Priority", the VoIP stream with the lowest "Order" priority number will be played. Requires that the "Enable Order Priority" option is enabled.
  • Channel(s): Select if this should apply for Channel 1, 2 or both.
Note icon Order number 1 has the highest priority, 10 has the lowest priority.


Station Administration

Backup and Restore

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

Logging

See Logging -IP Stations for more information.

Advanced SIP

Updates

IP stations may be set up to automatically poll configuration from a TFTP server. The IP address of this TFTP server can be obtained using DHCP procedures or be manually configured. See TFTP Provisioning for more information.

SIP Test

The SIP Test page


  • Call: Insert a directory number to establish a call to. Call is initiated by pressing the "Call" button.
  • Play Media: Select a file, press Play File to play the file.
  • Stream Audio: Select a Remote Hostname, Codec and port, press Start Stream to start streaming audio.
  • GPI State: Shows the current state of the GPI.

Advanced Network

SNMP

See SNMP in IP Stations for more information.

Firewall

The Firewall Settings page


All ENA amplifiers have an embedded firewall. See Firewall for details.