Model12 Posted June 25, 2007 Report Share Posted June 25, 2007 We are trying to get PBXnSIP to play nice with Exchange 2007. Everything works great but there two long delays during the SIP setup that results in about a 10 second total delay before the Exchange auto attendant starts talking. *ugh* Thru ugly low level packet traces it really seems that the Exchange server is just sitting there waiting. I called MS and they tried for days to help but we could find no problems. Then I got out the handy dandy telnet app and connected to port 5060 and pasted an INVITE to the Exchange server. To my surprise it just hung out ... for about 5 seconds (which it does twice during a connection leading to the 10 second delay). If I telnet and paste and then manually press ENTER it immediately works. If I telnet and paste an extra CR+LF it just sits there for 5 seconds. Is it a possible timing issue? I've actually seen this trying to simulate an SMTP connection via Exchange. Telnet/paste and it can't take it. Doing the same thing to a Linux machine running exim and it eats it right up. Does that make any sense? Quote Link to comment Share on other sites More sharing options...
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