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Generally, the voice gateway sends a SUBSCRIBE to the server, and receives a NOTIFY from the
server if the subscription is successful, and gets the status of the voice mailbox afterwards.
Configuring signaling security
Select Voice Management > Call Connection > SIP Connection from the navigation tree, and
click the Advanced Settings tab to access the configuration page as shown in Figure 674.
Figure 674
Con
figuring signaling security
Table 253 Configuration items
Item Description
TCP Connection
Aging Time
Set the aging time for TCP connections. If the idle time of an established TCP
connection reaches the specified aging time, the connection will be closed.
TLS Connection
Aging Time
Set the aging time for TLS connections. If the idle time of an established TLS
connection reaches the specified aging time, the connection will be closed.
Configuring call release cause code mapping
No matter whether a voice call is cleared normally or abnormally, a message with the call release
cause code will be sent. The default SIP status code to PSTN release cause code mappings and
PSTN release cause code to SIP status mappings are used for communication between a SIP
network and a PSTN. To adapt to more complex network applications, you can change the default
mappings.
Configuring PSTN call release cause code mappings
Select Voice Management > Call Connection > SIP Connection from the navigation tree, and
click the PSTN Release Cause Code Mapping tab to access the configuration page shown in Figure
67
5.
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