https://community.cisco.com/t5/unified-communications-infrastructure/cucm-third-party-sip-softphone-fallback-issue/m-p/3311292#M7971 <P>Hi,</P> <P>&nbsp;</P> <P>We&nbsp;have third-party sip softphones. There is no any problem during failover scenario. When primary node is down, registered users moves back up node.</P> <P>&nbsp;</P> <P>However, we have a problem about fallback scenario. When primary is up again, we&nbsp;send&nbsp;register to the primary&nbsp; node. We received 200 OK from Cisco Call Server but the user&nbsp;is shown as unregistered both on primary and back up nodes.&nbsp;</P> <P>&nbsp;</P> <DIV class="cuesLoginVersionInfo">System version:&nbsp;11.5.1.12900-21</DIV> <P>&nbsp;</P> <P>Is there any configuration about this or anything else?</P> Tue, 19 Mar 2019 20:03:45 GMT Kadir4102 2019-03-19T20:03:45Z https://community.cisco.com/t5/unified-communications-infrastructure/cucm-third-party-sip-softphone-fallback-issue/m-p/3311292#M7971 <P>Hi,</P> <P>&nbsp;</P> <P>We&nbsp;have third-party sip softphones. There is no any problem during failover scenario. When primary node is down, registered users moves back up node.</P> <P>&nbsp;</P> <P>However, we have a problem about fallback scenario. When primary is up again, we&nbsp;send&nbsp;register to the primary&nbsp; node. We received 200 OK from Cisco Call Server but the user&nbsp;is shown as unregistered both on primary and back up nodes.&nbsp;</P> <P>&nbsp;</P> <DIV class="cuesLoginVersionInfo">System version:&nbsp;11.5.1.12900-21</DIV> <P>&nbsp;</P> <P>Is there any configuration about this or anything else?</P> Tue, 19 Mar 2019 20:03:45 GMT https://community.cisco.com/t5/unified-communications-infrastructure/cucm-third-party-sip-softphone-fallback-issue/m-p/3311292#M7971 Kadir4102 2019-03-19T20:03:45Z