DWG2000E/F/G GSM/CDMA VoIP Gateway User Manual
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Shenzhen Dinstar Technologies Co., Ltd.
60
From Mode when Caller ID Is Available
Used to configure "From" Mode when Caller ID Is Available when call from GSM to
VoIP
Tel/User:
From: Caller ID <sip:3001@host.com>;tag=51088abb
User/User:
From: 3001 <sip:3001@host.com>;tag=51088abb
Tel/Tel:
From: Caller ID <sip: Caller ID@host.com>;tag=51088abb
User/Tel:
From: 3001 <sip: Caller ID @host.com>;tag=51088abb
From Mode when Caller ID Is Unavailable
Used to configure "From" Mode when Caller ID Is Unavailable
Anonymous :
From: <sip: Anonymous @host.com>;tag=51088abb
Username :
From: <sip: Username @host.com>;tag=51088abb
Answer Mode
Answered: Gateway will send SIP message "200 OK" to SIP Server after
GSM/CDMA users answered the call.
Alerted: Gateway
will send SIP message ‘200 OK’ to SIP Server immediately after
183 Ringing. In this situation, the called party possibly still in ringing status.
183 Mode
Immediately: Gateway will send "183 RING" immediately to SIP Server while it
receive “INVITE". In this situation, the called party possibly still not in ringing status.
Alerted: Gateway will send "183 RING" after received exact ringing signal from
GSM/CDMA network. In this situation, the called party is definely in ringing status.
Session Timer
SIP Session Timers which is an extension of SIP RFC 4028 that allows a periodic
refreshing of a SIP session using the RE-INVITE/UPDATE message. The refreshing
allows both the user agent and proxy to determine if the SIP session is still active. The
SIP Session Timer is a keep alive mechanism for SIP sessions that allow User Agents
(UA) or proxies to determine the status of a session and to release it if it is not active,
even if a BYE has not been received.