https://community.checkpoint.com/t5/Firewall-and-Security-Management/SIP-Timeout/m-p/91516#M6993 <P>Maybe this sk will help:</P> <P><A href="https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&amp;solutionid=sk104786" target="_self"> Avaya VoIP calls with Avaya Call Manager fail through Check Point Security Gateway</A>&nbsp;</P> Tue, 14 Jul 2020 18:03:25 GMT HeikoAnkenbrand 2020-07-14T18:03:25Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/SIP-Timeout/m-p/91510#M6992 <P>&nbsp;</P><P>I have an Avaya SBCE SIP Proxy installed in my DMZ, which is running on a 1590 Appliance at R80.20.05.&nbsp; When the phone boots up it works fine, I am able to make and receive phone calls, but after a few minutes, the phone no longer has dialtone.&nbsp; The phone itself is still functional, and if I log out and log back into the phone it starts working again.</P><P>My thoughts are that something is timing out, just not exactly sure what.&nbsp; Does anyone have any idea on how to either correct this or figure out what exactly is timing out?</P><P>&nbsp;</P><P>Thanks</P><P>&nbsp;</P> Tue, 14 Jul 2020 16:32:01 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/SIP-Timeout/m-p/91510#M6992 mikewece 2020-07-14T16:32:01Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/SIP-Timeout/m-p/91516#M6993 <P>Maybe this sk will help:</P> <P><A href="https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&amp;solutionid=sk104786" target="_self"> Avaya VoIP calls with Avaya Call Manager fail through Check Point Security Gateway</A>&nbsp;</P> Tue, 14 Jul 2020 18:03:25 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/SIP-Timeout/m-p/91516#M6993 HeikoAnkenbrand 2020-07-14T18:03:25Z