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Unicorn 3112 User Manual
Copyright © 2008
Hanlong Technology Co., Ltd
Page 35 of 42
FXO PORT SETTING
Setting Options
Meaning
Refer-To Use Target
Contact
Default is NO. If set to YES, then for Attended
Transfer, the “Refer-To” headeruses the transferred
target’s Contact header information.
SIP T1 Timeout
Default is 0.5 sec
SIP T2 Interval
Default is 4 sec
DTMF Payload Type
This parameter sets the payload type for DTMF using
RFC2833
DTMF in Audio
Default is YES
DTMF via RFC2833
Default is YES
DTMF via SIP INFO
Default is NO
Send Flash Event
This parameter allows users to control whether to send
an SIP NOTIFY message indicating the Flash event, or
just to switch to the voice channel when users press
the Flash key.
Proxy-Require
SIP Extension to notify SIP server that the unit is
behind the NAT/Firewall.
Use NAT IP
NAT IP address used in SIP/SDP message.
Default is blank.
Preferred Vocoder
(in listed order)
The Unicorn 3112 supports up to 7 different Vocoder
types including G.711 A-/U-law
,
G.723.1, G.726,
G.728, G.729A/B, iLBC(Pending). Depending on the
product model, some of these Vocoders may not be
provided in standard release.
Users can configure Vocoders in a preference list that
will be included with the same preference order in SDP