No Trust Device Cisco-Phone on C899G LTE Router

[BradBeer]

 I'm deploying some 899G LTE routers that will need to support a small number (2) of Cisco IP phones. I'm not seeing availability for the typical LAN command "trust device cisco-phone" on any of the (8) GigabitEthernet PoE ports on the router. I'm configuring each port as access and I can attached a service-policy to each port, but not the phone trust. Anyone aware of how to translate the trust command over to these little routers? I'm running version 15.4(3r)M1.

[Georg Pauwen]

Hello,

I don't think that command is available at all on the 800 platform, so you are 'stuck' with class based configs. I am not sure if the 899LTE supports Layer 2 Auto QoS, otherwise, below is a sample config for QoS for Cisco IP Phones:

class-map match-any VOICE_CLASS
match ip dscp ef
match ip dscp cs3
!
policy-map VOICE_POLICY
class VOICE_CLASS
priority percent X
class class-default
fair-queue
!
interface GigabitEthernet8
service-policy output VOICE_POLICY