Setting Up Your System
87
account.X.nat.udp_update_time
(X ranges from 1 to 16)
Integer from 15
to 2147483647
Description:
Configures the keep-alive interval (in seconds) for account X.
Example:
account.1.nat.udp_update_time = 60
Note: It works only if the value of the parameter “account.X.nat.udp_update_enable” is set
to 1, 2 or 3.
Web User Interface:
Account->Advanced->Keep Alive Interval(Seconds)
Phone User Interface:
None
To configure the type of keep-alive packets and keep-alive interval via web user interface:
1. Click on Account->Advanced.
2. Select the desired account from the pull-down list of Account.
3. Select the desired value from the pull-down list of Keep Alive Type.
4. Enter the keep-alive interval in the Keep Alive Interval(Seconds) field.
5. Click Confirm to accept the change.
Rport
The Session Initiation Protocol (SIP) operates over UDP and TCP. When used with UDP,
responses to requests are returned to the source address the request came from, and returned
to the port written into the topmost “Via” header of the request message. However, this
behavior is not desirable when the client is behind a Network Address Translation (NAT) or
firewall. So a new parameter “rport” for the “Via” header field is required.
Rport described in RFC 3581, allows a client to request that the server sends the response back
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