Refer to the exhibit.
2015-02-02T19:46:31+01:00 collabedge tvcs: UTCTime=”2015-02-02 18:46:31,144” Module=”network.tcp” Level=”DEBUG”: Src-ip=”JabberPubIP” Src-port=”4211” Dst-ip=”VCS-E_IP” Dst-port=”5061” Detail=”TCP Connecting” 2015-02-02T19:46:31+01:00 collabedge tvcs: UTCTune=”2015-02-02 18:46:31,144” Module="network.tcp” Level=”DEBUG”: Src-ip=”JabberPubIP” Src-port=”4211” Dst-ip=“VCS-E_IP” Dst-port=”5061” Detail=”TCP Connection Established” 2015-02-02T19:46:49+01:00 collabedge tvcs: UTCTime=”2015-02-02 18:46:49,606” Module=”network.tcp” Level=”DEBUG”: Src-ip=”92.90.21.82” Src-port=”4211” Dst-ip=“VCS-E_IP” Dst-port=”5061” Detail=”TCP Connection Closed” Reason="Idle countdown expired”
While reviewing Expressway-E logs, an engineer encounters an idle countdown expired error that occurred when a Jabber client tried to register. There is a firewall in front of the Jabber client. Which cause of this error is true?