[Serusers] symmetric signaling / windows messenger

[Jan Janak]

On 30-03 15:32, Graham Turner wrote:
> am attempting to negotiate the issues of NAT traversal with Windows messenger (4.7) as the SIP user agent 
> 
> seems support for symmetric signaling is prerequisite to this - 
> 
> documentation seems to suggest that Windows messenger (version not documented) supports symmetric signaling. 
  
  4.7 tested.
  
> 
> would therefore be expecting SIP data to be initiated from port 5060 - this is not the observed behaviour as i see data initiated from UDP port 1895  with the "contact" header being populated with the port number 16895 

  What's more important is that WM is able to receive replies on that
  port. The port number is not important.

> does the symmetric signaling need to be explicity enabled  (and if so how) for versions of windows messenger ??

  No, WM works without any special configuration.

     Jan.