Page History

...

 

Noprint
Panel borderColor green bgColor transparent borderWidth 2 Back to Table of Contents Back to SIP Services Back to SIP Transport

...

When TCP fallback feature is enabled it overrides any other configuration related to transport preference.

When a UE sends REGISTER request to the SBC over a TCP connection and the registration is successful, the TCP connection is present between UE and SBC for the life of the registration. If the registration becomes inactive, the SBC relies on the UE to clear (close) the TCP connection between the two.

The SIP Trunk Group flag clearTcpConnectionsforRegistration allows the SBC to clear the TCP connection between UE and SBC once the registration becomes inactive. The SBC closes the TCP connection even when there are user agent failure registrations.

TCP Keep-alive Timer

The 

Spacevars
0 series4

supports configuring TCP Keep-alive timer settings for SIP Trunk Group and Signaling Port configurations. These parameters enable the

Spacevars
0 product

to send out TCP Keep-alive packets to peer devices (for example, registered SIP phones) at configured intervals. The TCP Keep-alive packets allow a TCP connection between the

Spacevars
0 product

and the peer device to remain active when there are no SIP packets being exchanged between them.

...

For configuration details, see Signaling Ports - Sip Sig Port (EMA) or zone sipSigPort - CLI.

TCP Media Port Ranges

The 

Spacevars
0 series4

supports the ability to specify TCP media port ranges range for RTP and RTCP on a per-trunk group basis and at the system level MSRP and BFCP (over TCP) streams using the configurable TCP Port Range object. These TCP port ranges are used by the

Spacevars
0 product

to advertise TCP ports on which it can accept connections.

The following two are the configurable fields/parameters under tcpPortRange include:

• baseServerPort – The starting (base) port number for the range of TCP ports to use for media. The baseServerPort range is 1-65534, or "none" (the default value which indicates SBC does not apply this SIP trunk group control, and instead uses the tcpPortRange specified by system-wide settings.
• maxServerPort – The maximum TCP port number for the range of TCP ports to use for media. This value must be greater than the baseServerPort. The maxServerPort range is 1-65534, or "none" (the default value which indicates SBC does not apply this SIP trunk group control, and instead uses the tcpPortRange specified by system-wide settings.

...