Use this control to configure TCP Fallback settings.

Note

The SBC supports, by default, 1,300 Maximum Transmission Unit (MTU) bytes, and the MTU size used by the SBC is configurable. If the initial INVITE message size exceeds the default MTU value, the SBC sends the data over the TCP transport protocol. The TCP transport protocol is used if it is allowed by the transport profile irrespective of its preference order.

Command Syntax

% set addressContext <name> zone <name> sipTrunkGroup <name> signaling TCPFallback 
		maxMTUSupportedOverUDPControl <disabled | enabled>
		maxMTUSupportedOverUDPValue <1-5000>

 

Command Parameters

TCP Fallback Parameters

ParameterLength/
Range		Description
maxMTUSupportedOverUDPControlN/A

Maximum MTU Size accepted over UDP.

  • disabled (default)
  • enabled
maxMTUSupportedOverUDPValue 1-5000

Maximum size of the SIP Invite accepted over UDP. (default = 1300).

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