When our IP phones are registered to CallManager, we can see CS3 and EF marked packets going through the network (using access lists).
However, when we force the phone into SRST we only see CS3 traffic - not EF.
At the edge (Catalyst 3560) we are trusting cos (and mapping cos 3 to DSCP 24 and cos 5 to DSCP 46).
Does the IP phone mark packets differently when it is in SRST mode?
Cisco 7941 IP phones
SRST version 3.3