Mitel 6867i Administrator's Manual page 148

Mitel 6800 Series SIP Phone Release 4.2.0 Administrator Guide
PARAMETER
IN
IP PHONE UI
NA
NA
3-78
PARAMETER PARAMETERS IN
IN CONFIGURATION
MITEL WEB UI FILES
NA sip persistent tls
keep alive
NA sip send sips over
tls
DESCRIPTION
Allows you to configure the keep-alive
feature for persistent TLS connections only.
When this feature is configured, the phone
will send keep-alive pings to the proxy server
at configured intervals.
The keep-alive feature for persistent TLS
connections performs the following
functionalities:
• After a persistent TLS connection is
established or re-established, activate the
keep-alive, which will send CRLF to peer
periodically.
• The phone will retry the connection
automatically when a persistent TLS
connection is down.
• When a persistent TLS connection is
re-established (primary is up or primary is
down and backup is up), refresh
registration of the accounts associated
with the connection.
• When a persistent TLS connection to
primary is down, switch to backup if
connection to backup is working.
Allows administrators the ability to manually
configure the IP phones to use either the SIP
or SIPS URI scheme when TLS or persistent
TLS is enabled.
For more information, see Chapter 6, the
section, "Transport Layer Security (TLS)"
page 6-20.
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