Lets call our data centre site A and our remote site site B, we have many remote sites connecting to the data centre but I'll leave them out for the purpose of simplicity. The link at the Data Centre is 14Mbps with CIR of 4Mbps, the remote site is 6Mbps with CIR of 2Mbps.
Voice calls are breaking up between site A and B if someone from either site starts a large file transfer (WAN utilization is normally at around 20% but shoots upto 80% to 90% during file transfer, also pings from Site A to Site B change from a stable 8ms to 15ms to a very eratic 20ms to 130ms, at the time the reply is above 100ms the voice call starts breaking up). Both sites are connected to each other via Frame-Relay over a MPLS cloud. I think I have implemented QoS correctly and the frame relay config but I may be mistaken, can someone please run your eye over the remote site WAN router config and see if something isn't quite right?
class-map match-any five description VOIP match access-group name aglevel5 match ip precedence 5 match ip precedence 3 match ip dscp ef match ip dscp af31
class-map match-any four description Video Conferencing match access-group name aglevel4 match ip precedence 4 match ip dscp cs4
class-map match-any two description high priority apps match access-group name aglevel2
class-map match-any one description medium priority apps match access-group name aglevel1
policy-map cos description cos policy map class five set ip precedence 5 priority 512
class four set ip precedence 4 priority 512 class two set ip precedence 2 bandwidth percent 10 class one set ip precedence 1 bandwidth percent 10 class class-default fair-queue
interface Hssi2/0 description Frame-Relay bandwidth 6144 no ip address no ip redirects no ip unreachables no ip proxy-arp encapsulation frame-relay ip route-cache flow no ip mroute-cache serial restart-delay 0 frame-relay traffic-shaping frame-relay lmi-type ansi
interface Hssi2/0.100 point-to-point description IPWan/FR (10.255.10.9) bandwidth 6144 ip address 10.255.10.9 255.255.255.252 frame-relay interface-dlci 100 IETF class shaped-voice
map-class frame-relay shaped-voice no frame-relay adaptive-shaping frame-relay cir 6144000 frame-relay bc 2048000 frame-relay be 4096000 frame-relay mincir 2048000 service-policy output cos
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