Last Modified: Dec 13, 2019
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Known Affected Versions:
14.0.0, 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 14.0.1, 220.127.116.11
Opened: May 30, 2019
The SIP RFC states that if converting a message from a reliable transport to an unreliable transport, the proxy must guarantee delivery.
A system db variable was added to disable the TCP to UDP protection.
A adminstator required conversion of SIP messages from TCP to UDP and was willing to forgo the delivery requirement.
A DB variable has been added, Tmm.Sp.Sip.AllowTcpUdpConversion, possible values are enable|disable, the default value is disable. Enabling the DB variable enables the protection blocking TCP to UDP conversion for SIP messages.