Keep Alive Configuration; Rport Configuration - Yealink SIP-T2 Series Administrator's Manual

Keep Alive Configuration

Yealink IP phones can send keep-alive packets to the NAT device for keeping the communication port open.
The following table lists the parameters you can use to configure keep alive.
Parameter account.X.nat.udp_update_enable
It configures the type of keep-alive packets sent by the IP phone to the NAT device to keep the com-
Description
munication port open so that NAT can continue to function.
0-Disabled
1-Default (the IP phone sends UDP packets to the server).
Permitted
Values
2-Options (the IP phone sends SIP OPTIONS packets to the server).
3-Notify (the IP phone sends SIP NOTIFY packets to the server).
Default 1
Web UI Account->Advanced->Keep Alive Type
Parameter account.X.nat.udp_update_time
It configures the keep-alive interval (in seconds).
Example:
Description
account.1.nat.udp_update_time = 30
Note: It works only if "account.X.nat.udp_update_enable" is set to 1, 2 or 3.
Permitted
Integer from 15 to 2147483647
Values
Default 30
Web UI Account->Advanced->Keep Alive Interval(Seconds)
[1]
X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for T52S/T42G/T42S, X=1-12; for T41P/T41S/T27G,
X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2/CP920, X=1.

Rport Configuration

Yealink IP phones support rport described in
back to the source port from which the request came.
Rport feature depends on support from a SIP server.
The following table lists the parameter you can use to configure rport.
Parameter account.X.nat.rport
Description It enables or disables the NAT Rport feature.
0-Disabled
Permitted
1-Enabled
Values
2-Enable Direct Process
Default 0
Web UI Account->Advanced->RPort
[1]
[1]
RFC 3581. It allows a client to request that the server sends the response
[1]
<MAC>.cfg
<MAC>.cfg
<MAC>.cfg
Phone Network
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