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Michael Heinrich

SPA50x phone BLF light not work

Inside of our SIP switch I have a parking lot with BLF capibilities.  The NOTIFY that turns on and off the light doesn't work on SPA500 series phones, however the same NOTIFY will work with the SPA900 series phones.

Below is the XML inside of the NOTIFY that turns on the light for a SPA942 but not the SPA509G.

<?xml version="1.0"?>\n

<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="0" state="partial" entity="">\n

<dialog id="" direction="initiator">\n




Is there an option or configuration change that I need to get this to work on the SPA509G?

The line key extended function is fnc=sd+blf;ext=0*811@$PROXY;sub=park_1_1@$PROXY

paolo bevilacqua
Hall of Fame Master

Wrong forum, try "small business voice - spa phones".

You can move your post using the Actions panel on the right.

Hello. I have exactly the same problem.

I have a SPA509g configured via the webinterface.Asterisk is configured as explained in this topic. Nothing to do, the BLF stay's orange. The firmware was initialy 7.4.8  and now with 7.5.1 but problem stay the same.

I configured the syslog but I don't see anything wrong about the BLF. A SIP show hint don't show any whatchers.

For me, everything is ok with the asterisk because when I'm using X-Lite, I can see the presence without any problem, I see the watchers,...

Do you have any ideas? I see many topic with problem about that but the solution isn't clear.

Thanks a lot iin advance for support.

Brenden Griswold

This is the code I have successfully deployed to make this work in the GUI. I am using firmware version 7.4.7 and Metaswitch


Ext - Extension of party

Proxy- The address of your softswitch (or proxy)

DID - Direct phone number

Make sure your lines are set to disabled and private when configuring.


Everything seems to be ok. Can you look at this screens?

Ext1 and ext2 are disable. Ext3 is connected to my asterisk server. The line key 9 is used to show the status of this line.

It could be nice if you discover a mistake there

Thanks for help.

Sent from Cisco Technical Support iPad App

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