i have some 6945 and 6941 IP Phones which getting no Ringtones from TFTP. You can only choose the default ringtones Chirp1 and Chirp2.
Firmware is 9-4-1-3SR2 .
CUCM Version: 11.5
The Phone is getting the Ringlist from CUCM (Wireshark trace) but in Logs i got this error:
ERROR: Authenticating configuration file /RAM/Ringlist.xml.sgn
Has someone any idea what is going wrong?
Please follow the steps mentioned in the link below
Most likely you're facing the same as this thread