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CH4 VOIP Advance
4-1 SIP
Figure 4-1 SIP
Parameter Description:
SIP Hold Type: SIP on hold message sending method.
-
Send Only: Set up the SDP media to
sendonly
when send an
on-hold SIP message.
-
0.0.0.0: Set up the SDP connection to 0.0.0.0 when send an on-hold
SIP message.
-
Inactive: Set up the SDP media to inactive when send an on-hold
SIP message.
SIP Hold Auth: enable or disable SIP Hold Auth. When enable this
feature, it should contain authorization message on SIP invite
message at SIP Hold behavior.
SIP Compact Form: Enable SIP compact form or not. When enable
this feature, the connected SIP proxy is required to support compact
form.
Session Refresher: Who will send dialog keep alive message
(re-invite or update).
UAC: User Agent Client will do the refresh (default setting).
UAS: User Agent Server will do the refresh.
SIP T1 (msec): T1 determines several timers as defined in
RFC3261. For example, when an unreliable transport protocol is used,
a Client Invite transaction retransmits requests at an interval that
start at T1 seconds and doubles after every retransmission. A Client
