Simultaneous TCP Connection and Registration Cache Deletion

You can configure the Oracle® Enterprise Session Border Controller to automatically start a timer when a user deregisters or changes location by registering with a new contact address.

Not all devices tear down TCP connections associated with these old addresses when a user registers with a new contact address.

Registration Cache Deletion Configuration

You can apply suppress-reinvite to the sip-interface facing the User Agents whose re-INVITEs are to be responded to locally.

To enable Registration Cache Deletion:

In Superuser mode, type configure terminal and press Enter.
```
ORACLE# configure terminal
ORACLE(configure)#
```

Type session-router and press Enter.

ORACLE(configure)# session-router
ORACLE(session-router)#

Type sip-interface and press Enter. If you are adding this feature to a pre-existing configuration, you will need to select and edit it.
```
ORACLE(session-router)# sip-interface
ORACLE(sip-interface)#
```
tcp-conn-dereg—The delay (in seconds) that is used to determine when to terminate the TCP connection for a user that has been removed from the registration cache or changed location. This feature can be disable by setting the value to zero.
```
ORACLE(session-agent)# tcp-conn-dereg 5300
```
Save your work.