Cisco Music on Hold (MOH) on 2921 Router issues

We have a Cisco 2921 router using an SRE-710 and running Cisco Unified Communications Manager Express 9.5 and when incoming calls or internal calls are placed on hold a tone sounds, but when the call is parked you head the music on hold as it should be.  Cox is providing a T1 PRI Voice Circuit and below is the associated telephony config.  Any thoughts on why we are not hearing the music on hold?

control-plane
!
!
voice-port 0/0/0:23
 local-alerting
 timeouts interdigit 3
 !
 !
 !
!
!
mgcp fax t38 ecm
mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
!
mgcp profile default
!
sccp local GigabitEthernet0/1.20
sccp ccm 172.20.10.1 identifier 1 port 2444 version 7.0
sccp
!
sccp ccm group 1
 associate ccm 1 priority 1
 associate profile 1 register confdsp
 associate profile 2 register xcodedsp
!
dspfarm profile 2 transcode
 codec g711ulaw
 codec ilbc
 codec g711alaw
 codec g729ar8
 maximum sessions 64
 associate application SCCP
!
dspfarm profile 1 conference
 codec g729br8
 codec g729r8
 codec g729abr8
 codec g729ar8
 codec g711alaw
 codec g711ulaw
 maximum conference-participants 16
 maximum sessions 4
 conference-join custom-cptone jointone
 conference-leave custom-cptone leavetone
 associate application SCCP
!
dial-peer voice 1 pots
 incoming called-number .
 direct-inward-dial
 port 0/0/0:23
!
dial-peer voice 1001 pots
 description Local dial-peer
 translation-profile outgoing sip-outbound
 destination-pattern 9[2-9]......
 port 0/0/0:23
!
dial-peer voice 1002 pots
 description Long Distance dial-peer
 translation-profile outgoing sip-outbound
 destination-pattern 91..........
 port 0/0/0:23
!
dial-peer voice 1003 pots
 description 411/911 dial-peer
 translation-profile outgoing sip-outbound
 destination-pattern 9411
 port 0/0/0:23
!
dial-peer voice 1004 pots
 description 10 digits dialing
 destination-pattern 9[2-9]..[2-9]......
 port 0/0/0:23
!
dial-peer voice 5000 voip
 description Voicemail
 destination-pattern 50.
 b2bua
 session protocol sipv2
 session target ipv4:172.20.10.2
 session transport udp
 dtmf-relay rtp-nte
 codec g711ulaw
!
dial-peer voice 5001 voip
 description MWI dial-peer
 destination-pattern 800[01]...
 b2bua
 session protocol sipv2
 session target ipv4:172.20.10.2
 session transport udp
 dtmf-relay rtp-nte
 codec g711ulaw
!
dial-peer voice 1000 pots
 translation-profile outgoing sip-outbound
 destination-pattern 9T
 no digit-strip
 port 0/0/0:23
!
dial-peer voice 911 pots
 translation-profile outgoing sip-outbound
 destination-pattern 9911
 port 0/0/0:23
 forward-digits 0
!
!
presence
 presence call-list
!
!
!
gatekeeper
 shutdown
!
!
telephony-service
 sdspfarm units 10
 sdspfarm transcode sessions 32
 sdspfarm tag 1 confdsp
 sdspfarm tag 2 xcodedsp
 conference hardware
 srst mode auto-provision all
 srst ephone template 1
 srst dn template 1
 srst dn line-mode dual-octo
 authentication credential administrator
 em logout 0:0 0:0 0:0
 codec g722-64
 max-ephones 90
 max-dn 300
 ip source-address 172.20.10.1 port 2444
 max-redirect 20
 service phone g722CodecSupport 2
 service dnis overlay
 service dnis dir-lookup
 timeouts interdigit 4
 timeouts ringing 30
 system message Butler Enterprises
 url services http://172.20.10.2/voiceview/common/login.do
 url authentication http://172.20.10.1/CCMCIP/authenticate.asp
 load 7916-12 B016-1-0-4-2
 load 7916-24 B016-1-0-4-2
 load 7937 apps37sccp.1-4-4-0
 load 7942 SCCP42.8-5-2S
 load 7962 SCCP42.8-5-2S
 load 7975 SCCP75.8-5-2S
 time-zone 12
 voicemail 500
 max-conferences 16 gain -6
 moh "butler5.au"
 web admin system name administrator secret 5 $1$1t2h$a2UDLrxtgDZCX2mN/BYpF/
 dn-webedit
 time-webedit
 transfer-system full-consult
 transfer-pattern 9T
 secondary-dialtone 9
 after-hours pstn-prefix 4 1
 night-service code *1111
 night-service weekday 17:30 08:30
 night-service day Sun 08:31 08:30
 night-service day Sat 08:31 08:30
 night-service date Dec 25 08:31 17:29
 night-service date Jan 1 08:31 17:29
 night-service date Jul 4 08:31 17:29
 night-service date Sep 5 08:31 17:29
 night-service date Dec 24 12:01 17:29