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What do the LEDs mean on Diva Media Board?

The LEDs located on the rear bracket of the Diva Media Boards can be useful in determining if the card is functioning correctly, or in assisting with the diagnosis of problems.

If you do not have physical access to the board, you can check the LED status in the Diva Management Console.

The meaning of the LEDs on Diva boards can be found in the Diva Media Board Manual, that can be downloaded directly here.

Below you will find a more detailed explanation of what the different LED statuses mean and what steps to take to resolve issues.

BRI Boards

Green On:
When on, the green LED indicates "Layer 1 activated, connection established" 
Meaning: The card and the ISDN line are both operating correctly. 

Green Off:
Indicates that Layer 1 can not be established. The most likely reason for this would be a wrong cable or wrongly configured switch type. Check the ISDN switch type in the Line configuration. Check the cable. Check the ISDN Line.

  Related link: Hardware Configuration Checklist

Orange On:
When on, the orange LED indicates 'Layer 2 activated'

Orange off:
Check your Layer 2 configuration, i.e. Switch Type, switch etc. Check that you have chosen the Correct Interface type, i.e. Point-to-Point or Point-to-Multi-Point. 

  Related link: Hardware Configuration Checklist

Note: In Europe, the status of the D-channel depends on the switch configuration; the LED might remain lit for the duration of the call or it might remain lit continuously. In North America, the D-channel is always active and the LED remains lit.

PRI Boards

Our helpweb contains information on troubleshooting PRI issues and can be used in conjunction with this article to solve problems.

Red On:
Indicates that Layer 1 can not be established. The most likely reason for this would be an incorrect  cable or configured switch type. Check the ISDN switch type in the Line configuration. Check the cable. Check that Line is still activated by the Line Provider.

Yellow On:
Indicates that the Remote station has synchronisation problems. This cause is sent by the remote station or switch. 
The most likely reason would be a wrong CRC setting - the CRC setting must match the value configured for your line by your ISDN service provider. Check the CRC setting in the Line configuration, you should select the correct CRC setting ('on' or 'off') for your ISDN service provider. 
Note: Some ISDN service providers do not always abide by their own standards for CRC setting, so if you continue to get a yellow LED error, try both 'on' and 'off' settings for the CRC. 

Blue On:
When on, the blue LED indicates "alarm indication signal" (AIS) or "loss of frame alignment" (LFA). There is a problem with incoming frames to the Diva PRI. Contact your ISDN service provider.

Green On:
When on, the green LED indicates "Layer 2 activated, connection established" 
Meaning: The card and the ISDN line are both operating correctly. 

When green is off, check your layer 2 configuration, i.e. switch type, switch etc.
Make sure that you have chosen the correct ISDN Interface Type, which is Point-to-Point and that you are not connected to a Point-to-Multi-Point interface, since this is not specified for PRI cards.

Please Note:
When green is off, this does not necessarily mean that the card is not working properly, but this will depend on the Layer 2 Connect Mode setting. A Diva PRI card can be configured for the following Layer 2 Connect Mode settings:
No Disconnect or No DISC - (German: Permanent nach Ruf)
If the drivers are installed properly this setting will have the following effect:
After a reboot of the server the Green LED is OFF until the first connection is established or a Line Check is performed successfully. Afterwards the Green LED will always remain lit until the server is rebooted, because Layer 2 will not be disconnected again.

Permanent Mode
If the drivers are installed properly this setting will have the following effect:
After a reboot of the server the Layer 2 is established automatically and never disconnects - i.e. the Green LED will be permanently on. The default setting for Primary Rate Adapters is Permanent, but certain switch types - e.g. some PABX models with PRI modules in Europe - may prefer the setting No Disconnect.

Note: The American ISDN protocols National ISDN 1 (NI 1) and all AT&T protocols always require 'Permanent' mode when used in conjunction with Primary Rate Interfaces.