4 Configurations on Web Interface
Flash-hook Operation Mode
Choose Mode one, Mode two or Mode three
Attended Transfer Trigger
Choose ‘On-hook’ or ‘Flash-hook +4’
When enabled, the device will not resend the 200 OK
Ignore ACK
response message even if it does not receive an ACK message
after going off-hook
Figure 4-10-5.2 Configure Default SIP Parameters & Early Media
Table 4.10.5-2 Explanation of Default SIP Parameters & Early Media Parameters
Parameter
Explanation
PRACK(RFC3262)
If this parameter is enabled, the FXO GW device supports
reliable transmission of provisional response
PRACK Only for 18x with
If this parameter is enabled, only PRACK will be sent when
SDP
there’s SDP in 18x response
Early Media
If this parameter is enabled, the FXO GW device supports the
receiving of Early Media.
Early Answer
If this parameter is enabled, the FXO GW device supports early
answer
Session Timer (RFC4028)
Whether to enable ‘session timer’, default value is ‘not enable’.
The interval for refreshing session; default value is 1800s.
Session-Expires
Min-SE
The Session-Expires header field conveys the session interval
for a SIP session.
The minimum interval for refreshing session; default value
is 1800s.
The Min-SE header field indicates the minimum value for the
session interval.
Session Refresh Method
The method to refresh session; default value is INVITE.
Gateway-128o User Manual
49
Summary of Contents for FXO-128o
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