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Community Member

One way voice problem in cme


I have resently upgraded my cme to 8.8 & ios version isc2900-universalk9-mz.SPA.152-1.T2.binafter that on wards i am haveing problem .

from the cme setup we will dial a  speed dial and the call is routed to ccm translation patten and  from the ccm vg the call is go to pstn and it was working fine before and after upgrading  the cme the problem started .

cme side config



dial-peer voice 4 voip

description *****FOR ACESSING HO SPEED DIAL  *****

destination-pattern *3..

session target ipv4:

dtmf-relay h245-alphanumeric

codec g711ulaw


from this dial peer it will go to other side


ccm side vg config

dial-peer voice 5003 voip

description ***** HO SPEED DIAL via PUB *****

preference 3

destination-pattern *3..

voice-class codec 1

voice-class h323 1

session target ipv4:

incoming called-number .

dtmf-relay h245-alphanumeric

no vad


ccm vg pots config

controller E1 1/0

framing NO-CRC4

pri-group timeslots 1-31

interface GigabitEthernet0/0

description ***** Connected to NSCC-SW1 Port 0/44 *****

ip address

duplex auto

speed auto

h323-gateway voip interface

h323-gateway voip bind srcaddr


interface GigabitEthernet0/1

no ip address


duplex auto

  speed auto


interface Serial0/0/0

no ip address

clock rate 2000000


interface Serial1/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn incoming-voice voice

no cdp enable

dial-peer voice 205 pots

destination-pattern 905........

fax rate disable


port 1/0:15

prefix 05


form the cme side if call the speed dial no *360 it is translating to the original no and call is connecting

but the  called party  is not able to here  the voice  of  calling party

Please help me to resolve the issue

Everyone's tags (6)

One way voice problem in cme


The majority of RTP one way transmission problem are down to IP routing issues.

The RTP stream should be from the CME phone ip address to the CUCM phone IP address.

In your case the issue of RTP one way direct is from CME PHONE ----> CUCM PHONE.

You weill need to start checking the IP connectivity and routing tables

from the VLAN for the CME phone to the VLAN for the CUCM phone

May be use something simple like

tracert from the CME PHONE VLAN

Please rate useful posts.

Regards, Alex. Please rate useful posts.
Community Member

One way voice problem in cme

It was a ios issue  and got resolved .

with the ios version


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