N2048P Voice QoS Help

I am working on setting up a new stack of two Dell N2048P switches and I'm stumbling through the Voice QoS part of the setup.  A colleague started setting up this config and I am trying to get ready for production.

Any help or advice would be greatly appreciated. 

configure
vlan 20,22-26,28-29,253
exit
vlan 20
name "Workstations"
exit
vlan 24
name "Voice"

system jumbo mtu 9216
no ip http server
ip http secure-server
boot auto-copy-sw
class-map match-all voice-map
match vlan 24
exit
policy-map voice-policy in
class voice-map
assign-queue 2
mark cos 5

switchport voice vlan
ip ssh server
application install SupportAssist auto-restart start-on-boot
application install hiveagent start-on-boot

interface Gi1/0/1
cos-queue strict 5
description "Workstations"
classofservice dot1p-mapping 5 5
switchport mode general
switchport general pvid 20
switchport general allowed vlan add 24 tagged
switchport access vlan 20
lldp tlv-select system-description system-capabilities management-address
switchport voice vlan dot1p 5
switchport voice vlan override-authentication
exit
!
interface Gi1/0/2
cos-queue strict 5
description "Workstations"
classofservice dot1p-mapping 5 5
switchport mode general
switchport general pvid 20
switchport general allowed vlan add 24 tagged
switchport access vlan 20
lldp tlv-select system-description system-capabilities management-address
switchport voice vlan dot1p 5
switchport voice vlan override-authentication
exit
!

Thanks.