We will like to prioritize voice traffic for all softphones.
The PBX is hosted at vendor's site, so we connect the softphone to an external IP of the PBX.
I have scripted something below but not sure how to apply to interfaces as softphones are installed on user computers.
Softphones and PCs are on same subnet.
ip access-list extended QoS-ACL-01
permit ip 0.0.0.0 0.0.1.255 220.127.116.11
class-map match-all QoS-CM-01
match access-group name QoS-ACL-01
set dscp ef
service-policy input QoS-PM-01
Do I have to apply "service-policy input QoS-PM-01" to all interfaces?