Yealink VC880 - Page 79

| Configuring Account Settings | 79
Parameter Description Configuration Method
Transport
Specify the transport protocol
for transmitting the SIP
signaling.
The supported protocols are as
follows:
• UDP—it provides the best
transmission for SIP signaling.
• TCP—it provides a reliable
transmission for SIP signaling.
• TLS—it provides a safe
transmission for SIP signaling.
TLS is available only when the
device is registered on a SIP
server that supports TLS.
• DNS-NAPTR—the device
performs the DNS NAPTR
and SRV request to find the
service type and the port if
no server port is given.
Default: UDP.
Web user interface
Endpoint
CTP20
Server Expires
The registration timeout (in
seconds) of the device.
After the timeout, the device will
send the registration request to
the SIP server again.
Default: 3600 seconds.
Web user interface
Endpoint
CTP20
Keep Alive Interval
Configure the interval (in
seconds) that the device sends
keep-alive messages to the SIP
server, so that the SIP server can
remain connected to the device.
Default: 30 seconds.
Web user interface