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one way transmission on new IOS

pok-cheung.tse
Level 1
Level 1

Hi

I install a Vg200 for ISDN connection. I configure to MGCP and connect to T1. I have met the problem. Some voice call has one way transmission. The ip phone user can not hear voice in 1 or 2 second during the call. However, the other side can hear the voice. I have upgraded the IOS to 15.5(T5), but the problem can not be solved. Do you have any opinion to do? Upgrade other IOS or change the configuration.

regards

1 Reply 1

pbarman
Level 5
Level 5

Do you mean that there is a delay in the initial voice setup for the IP phone user? Can the IP phone user hear the outside caller after the initial 1 or 2 secs?