In certain situations and timings of SIP traffic to an SPA504G running any released firmware from 7.4.8a to 7.5.6a, the phone enters an endless Ringing state if the following sequence of SIP messages is received and responded to.
PBXIP -> PHONE I...
Jack,I've been able to reproduce the issue with 7.5.7 firmware, so yes it has not yet been fixed.At least I've had confirmation from Cisco that they are able to reproduce the issue.. now the wait on the fix.
Can you point me at the particular firmware in question or the Release Notes for that firmware?EDIT: Found this reference in the 7.5.6a release notes, but I can still reproduce it in that firmware.CSCty82148: The SPA51x phone keeps ringing even after...
