Hi Tomasz.Did you make the TERM41.7 file available to download via the 'tftp-server' command?-Adam

Also, check to make sure that your MWI type is correct for your phone. See the following:http://www.cisco.com/en/US/partner/docs/voice_ip_comm/vg248/1_3_1/english/configuration/guide/vg248swv.html#wp1028959-Adam

Hi Tristan.You may be hitting this caveat:CSCdu79519Voltage might be too low for Message Waiting Indication (MWI) lamps on some phones. Some older phones that use MWI lamps might not light up, even if the VG248 port is configured to indicate Message ...

John.Cisco has a solution for this, the Cisco Emergency Responder, see the following link:http://www.cisco.com/en/US/products/sw/voicesw/ps842/index.htmlFailing this, I'm not sure there is anything you can do. If you are required to provide 911 emer...