Hi Expert and Every Member,
My UC System include CUCM 8.6 , 1 Voice Gateway 3925 with CUBE, 300 Agent IP Phone 7942 .We can do outbound call very well. Unfortunately, when customer from PSTN do inbound call to ip phone(agents), they sometimes get one way audio call that means customer can hear ip phone's voice but Ip phones can not hear customer voice. But if customer press any button on his phone(one or few times) their are two way audio which mean is the ip phone (agent) can hear the customer voice?? This call is happen very intermittent about 10 inbound call success i get 1 one way audio inbound call. I try to do many ways to
- Check IP Routing, i can ping everything.
- All IP Phone, VoiceGateway on primary CUCM
my toplog show below:
customer phone--->pstn--->cube router----->cucm-----sccp phone 7942
voice-class codec 10
no voice-class sip outbound-proxy
dtmf-relay rtp-nte
fax protocol none
ip qos dscp cs3 signaling
no vad
!
dial-peer voice 32 voip
destination-pattern 88[2-4]..
session protocol sipv2
session target ipv4:1.1.1.1
voice-class codec 10
no voice-class sip outbound-proxy
dtmf-relay rtp-nte
fax protocol none
ip qos dscp cs3 signaling
no vad
!
dial-peer voice 35 voip
session protocol sipv2
session target sip-server
incoming called-number .T
voice-class codec 10
no voice-class sip outbound-proxy
dtmf-relay rtp-nte
fax protocol none
no vad
!
!dial-peer voice 65 voip
description xxx INBOUND
translation-profile incoming inbound
rtp payload-type nse 99
session protocol sipv2
session target sip-server
incoming called-number xx[2-4]..
voice-class codec 10
voice-class sip dtmf-relay force rtp-nte
dtmf-relay rtp-nte
fax protocol none
Please give me your recommends to solve it quickly please.
Thanks and best regards,
Eric
