Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series IP Phones
80
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.
, allows a client to request that the server sends the response back
to the source port from which the request came.
Rport feature depends on support from a SIP server.
Procedure
Rport feature can be configured using the following methods.
Central Provisioning
(Configuration File)
<MAC>.cfg
Configure NAT Rport feature on a
per-line basis.
Parameter:
account.X.nat.rport
Web User Interface
Configure NAT Rport feature on a
per-line basis.
Navigate to
:
http://<phoneIPAddress>/servlet?p=a
ccount-adv&q=load&acc=0
Details of Configuration Parameter:
Parameter
Permitted Values
Default
account.X.nat.rport
[1]
0, 1 or 2
0
Description:
Содержание SIP-T19 E2 T4 Series
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