Video conf webex

L3 Networker

Video conf webex

Hello ,


we have got one issue .


While we dial from webex internal to outside webex number  : 

sometimes the webex connection created ; sometimes black screen and sometimes no connection created.


Got below error on webex


The far end system does not support the requested channel type .


The security policy is  to any  any port 


The NAT is Hide NAT ( dynamic IP and port) 


The logs says that it is seeing APP id h.225, h.245 , rtp-base ,rsvp 

Some logs shows tcp reset from server ,


At times ; while running show session id XXX commands ; i dont see NAT is happening 


DO I  need to change NAT to static Bidirectional or do i have to use application override  for ports 1024-65535? 

L6 Presenter

@FWPalolearner ,


Yes put static bidirectional NAT and then check. Most of audio/video related problems are due to NAT only.


Hope it helps!



Mayur S.
L3 Networker

Thanks  Mayur . I will try and provide you the update 

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