The configuration parameters below, in most situations, should allow for safe debugging of voice related issues on production routers. Debug output will be logged locally and can be retrieved with the ‘show log’ command.
Obviously it it’s never a good idea to ‘debug all’ of feature and as always YMMV!
conf t service sequence-numbers service timestamps debug datetime localtime msec service timestamps log datetime msec logging buffered 10000000 debug no logging console no logging monitor default logging rate-limit default logging queue-limit voice iec syslog exit clear log