Xorcom GW0017, Руководство пользователя

Страница: 53 / 88

GW0017 User Manual
48
Figure 4-15 Configure Default SIP Parameters & Early Media
Table 4-8 Explanation of Default SIP Parameters & Early Media Parameters
PRACK(RFC3262)
If this parameter is enabled, the GW0017 device supports
reliable transmission of provisional response
PRACK Only for 18x with
SDP
If this parameter is enabled, only PRACK will be sent when
there’s SDP in 18x response
Early Media
If this parameter is enabled, the GW0017 device supports the
receiving of Early Media.
Early Answer
If this parameter is enabled, the GW0017 device supports early
answer
Session Timer (RFC4028) Whether to enable ‘session timer’, default value is ‘not enable’.
Session-Expires
The interval for refreshing session; default value is 1800s.
The Session-Expires header field conveys the session interval
for a SIP session.
Min-SE
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.