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Different server vendors can provide different
models.
RFC protocol edition
: Configure the protocol
version of the phone. When your phone needs to
communicate with gateway which uses SIP1.0,
such as CISCO5300, you need to configure to
RFC2543 to conduct normal communication.
RFC3261 is used by default.
Anonymous call edition
: Configure whether to
use anonymous security call. It supports
RFC3323 and RFC3325.
Transport protocol
: Configure the transport
protocol, TCP, UDP or TLS.
Ban anonymous call
: Configure whether to ban
anonymous call.
Enable strict proxy
: Compatible with special
server. (Using source address of opposite side
when return message, no longer use the address
in via field).
Subscribe for MWI
: After successful
registration, you can subscribe to information,
such as someone else's status or voice mail and so
on.
Enable rport
: Configure whether to support
RFC3581, rport mechanism is used in internal
network, and requires a SIP server to support, it
is used for keeping the NAT connect of the
internal network and the external network.
Enable PRACK
: Configure whether to support
Multi-media Video Phone UTT-990 User Manual