[c-nsp] Cisco VoIP and QoS using NBAR

[Ravengate]

Greetings list.

i am hoping someone can point me in the right direction.

we are using NBAR to classify traffic (Citrix and trying to accomplish the 
same with Cisco VoIP:

dial-peer voice 20 voip
 destination-pattern 2..
 session target ipv4:192.168.152.1
 dtmf-relay cisco-rtp
!
dial-peer voice 40 voip
 destination-pattern 4..
 session target ipv4:192.168.151.1
 dtmf-relay cisco-rtp
!

------------------------------------------------------

our class maps mark the Citrix traffic just fine but the voice class map 
doesn't seem to be recognizing the VoIP traffic:

class-map match-any Voice_ClassMap
  match protocol rtp
class-map match-any Citrix_ClassMap
  match protocol citrix
!
!

we tried both match protocol rtp and match protocol rtp-audio....

Foo-Host#sh policy-map interface serial 1/0.17
 Serial1/0.17: DLCI 17 -

  Service-policy output: RemoteSite_PolicyMap

    Class-map: Voice_ClassMap (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: protocol rtp
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing
        Strict Priority
        Output Queue: Conversation 24
        Bandwidth 30 (%)
        Bandwidth 37 (kbps) Burst 925 (Bytes)
        (pkts matched/bytes matched) 0/0
        (total drops/bytes drops) 0/0

    Class-map: Citrix_ClassMap (match-any)
      1615238 packets, 224636802 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: protocol citrix
        1615238 packets, 224636802 bytes
        5 minute rate 0 bps
      Queueing
        Output Queue: Conversation 25
        Bandwidth 40 (%)
        Bandwidth 49 (kbps) Max Threshold 64 (packets)
        (pkts matched/bytes matched) 49790/23910678
        (depth/total drops/no-buffer drops) 0/0/0

    Class-map: class-default (match-any)
      1135121 packets, 522233684 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
      Queueing
        Flow Based Fair Queueing
        Maximum Number of Hashed Queues 16
        (total queued/total drops/no-buffer drops) 0/101/0
Foo-Host#

-----------------

any ideas on what we need to do in order to classify the VoIP traffic 
properly?

thanks very much,
jg