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New Member

one way audio before press any button

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

2 REPLIES
VIP Super Bronze

one way audio before press any button

What fimware is your phone running? This looks like a firmware issue. You may consider upgrading your firmware

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New Member

one way audio before press any button

HI Aokanlawon,

My CUCM is  8.6.2.20000-2 Unrestricted

Can you help me to search this bug ?? Many thanks.

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