Dear All ,
I am Facing Voice delay in Cisco Call manager ,Recently we shifted our New Office ....Still on off my Voice Gateway is Connecting Through Data link Connection ....Mostly I am Face Delay ....Like when ever i am calling any External Number ,the receiver cannot able to hear my Voice ...
Is there is Any Way to solve this is issue and this High Priority ............
Assuming that you are the end user, and not a Voice Networking Engineer, do you work with a reputable consultant, or UC certified Cisco Partner?
If not, you should, because experience and knowledge are required when working on IP voice systems.
The following QoS configuration was put in place and the issue was resolved:
------------------ QOS: MQC - apply in THIS order step 1 (optional) define ACL step 2 define class-map call ACL above or match something like rtp, dscp, prec) step 3 define policy-map call class-map(s) above and allocated bandwidth & set action step 4 apply the policy-map on step 3 to interfaces or DLCI -------------------- MQC EXAMPLE (logical presentation - be sure to apply in the order listed ABOVE) ============== !! this first part is the shaper which then calls the QoS service policy further down policy-map MQC class class-default shape average 1425000 << based on 1.5 Meg pipe 95% of uplink speed << service-policy QOS policy-map QOS class voice-RTP priority 1050 << based on leaving 375K of a 1.5 Meg link available. set dscp ef !! more details of voice-RTP in the class-map below class voice-control bandwidth 75 << based on leaving 375 K of a 1.5 Meg link available. set dscp af31 !! more details of voice-control in the class map below class class-default fair-queue !! end policy-map QoS !! class-map details below class-map match-any voice-control match ip dscp af31 match ip dscp cs3 match access-group 101 !! more details on the access list below - choose type of control h323/sip/mgcp, etc class-map match-any voice-RTP match ip dscp ef match ip rtp 16384 16383 match access-group name AutoQos-VOIP-RTP !! more details on the access list below - deals with the ports 16384 through 32767 ! ! ip access-list extended AutoQos-VoIP-RTP permit udp any any range 16384 32767 ! ! !! details on ACCESS-LIST 101 depends upon type of control we are using. !For MGCP access-list 101 permit udp any any eq 2427 access-list 101 permit tcp any any eq 2428 !For H.323 access-list 101 permit tcp any any range 1718 1720 access-list 101 permit tcp any any eq 1731 !For Skinny (phones registered to CCM) access-list 101 permit tcp any any eq 2000 !For Sip access-list 101 permit tcp any any eq 5060 !!------------------------------- !! DO NOT FORGET TO APPLY MQC (or QoS if you choose not to shape) TO AN INTERFACE !!------------------------------- interface x/x service-policy output MQC ****** end MQC EXAMPLE ******