User Manual

99
Property
Type
Values
Default Value
Description
voip.rtp-port
NUMBER
1024..65535 : Port number
4000
Base port number for VoIP RTP. RTP is originated and received on
even port numbers, and the associated RTCP uses the next higher
odd port number.
voip.set-qos
BOOLEAN
0 : Disable QoS
1 : Enable QoS
0
Option to enable QoS (Quality of Service) tagging for SIP and
media. For layer 3, at the Internet layer, the DiffServ
(Differentiated Services) precedence level is Class 3. The
Differentiated Services Code Point (DSCP) in the IP header is set to
24 (0x18). For layer 2, IEEE 802.1p tagging is supported.
voip.udp-tcp-
selection
BOOLEAN
0 : UDP
1 : TCP
0
Transport that will be used for SIP messages.
voip.local-port
NUMBER
1024..65535 : Port number
5060
Specifies the local port for SIP transport.
voip.ip-addr
TEXT
ip-address : IP address
Configure optional address to advertise as the address of this
transport. Can specify any address or hostname for this field. For
example, it can point to the public address of a NAT router where
port mappings have been configured for SIP.
voip.bound-addr
TEXT
ip-address : IP address
Configure bound IP address we intend to use.
voip.no-refer-sub
BOOLEAN
0 : Disable suppressing
subscription
1 : Enable suppressing
subscription
0
Enable or disable suppress subscription during transfer. When
transferring a SIP call, the SIP REFER process automatically
establishes a temporary event subscription to notify the party
initiating the transfer about the receiver's status in handling the
REFER. In some cases these event subscriptions and notifications
are not needed, such as when forking is not used. Enable this
option to suppress the automatic event subscriptions when
transferring calls. (See IETF RFC 4488.)
voip.min-size
BOOLEAN
0 : Do not use compact format
1 : Use compact format.
0
Use compact SIP message format. The SIP protocol specifies that
header field names can be in the full name form or in the
abbreviated form. Abbreviated form is useful when messages
might be too large to be carried on the available transport, for
example when exceeding UDP's Maximum Transmission Unit
(MTU). Enable this option to encode SIP headers in their short
forms to reduce size. By default, the option is not enabled and SIP
headers in outgoing messages will be encoded in their full names.
(See SIP protocol standard, IETF RFC 3261.)