Yealink VC880 - Basic System Features; CP960 World Time Viewing

| Configuring Account Settings | 81
Parameter Description Configuration Method
SIP IP Call Out (is not applicable
to VP59)
Enable or disable the SIP IP Call
Out. If it is enabled, the system
can call the far site by dialing an
IP address directly.
Default: On.
Web user interface
Endpoint
CTP20
SIP IP Call (is only applicable to
VP59)
Enable or disable the SIP IP Call
Out.
Default: On. Note: When it is set
to On on both sites, the system
can call the far site by dialing an
IP address directly.
Web user interface
Endpoint
Transport
Specify the type of transport
protocol for the SIP IP call.
The supported protocols are as
follows:
• UDP—it provides the best
transmission for SIP signaling.
• TCP—it provides a reliable
transmission for SIP signaling.
Default: TCP.
Web user interface
Endpoint
CTP20
Advanced Security (is not
applicable to VP59)
Enable or disable the advanced
security.
Default: On.
If advanced security is enabled
and the IP call password is
configured, the third-party or
Yealink old devices need to use
“password@IP” to call in for the
SIP IP call.
Web user interface
IP Call Password (is not
applicable to VP59)
Configure the password for the
SIP IP call.
Note: It can be configured only
when the advanced security
feature is enabled.
Web user interface
Note: If you want to use SIP IP call to make private-to-public calls, you also need to enable the
static NAT settings or STUN feature for the SIP IP Call.
Related tasks
Configuring NAT
Enabling Static NAT Feature for SIP Protocol(SIP Account and SIP IP Call)