Yealink SIP-T2 SERIES Administrator's Manual page 763

3. Tap the Save soft key to accept the change.
IP phones can send keep-alive packets to NAT device for keeping the communication
port open.
Procedure
Keep alive feature can be configured using the configuration files or locally.
Configuration File
Local
Details of Configuration Parameters:
Parameters
account.X.nat.udp_update_enable
Description:
<MAC>.cfg
Web User Interface
Configuring Advanced Features
Configure the type of keep-alive
packets on a per-line basis.
Parameters:
account.X.nat.udp_update_enable
Configure the keep-alive interval
on a per-line basis.
Parameters:
account.X.nat.udp_update_time
Configure the type of keep-alive
packets on a per-line basis.
Configure the keep-alive interval
on a per-line basis.
Navigate to:
For
SIP-T48G/T46G/T42G/T41P/T40P/T29
G/T27P/T23P/T23G/T21(P) E2/T19(P)
E2/CP860:
http://<phoneIPAddress>/servlet?p
=account-adv&q=load&acc=0
For SIP VP-T49G:
http://<phoneIPAddress>/servlet?
m=mod_data&p=account-adv&q
=load&acc=0
Permitted Values
0, 1, 2 or 3
Default
1
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