Grandstream Networks GVC3200 Administration Manual page 40

It is used to set the SIP message type to refresh the session. If it is set to "Yes", the
Force INVITE
Session Timer will be refreshed by using the SIP INVITE message. Otherwise, the
device will use the SIP UPDATE or SIP OPTION message. The default setting is "No".
This is used to set the caller party to act as refresher. If set to "Yes" and both parties
Caller Request
support session timers, the device will enable the session timer feature when it makes
Timer outbound calls. The SIP INVITE will include the content "refresher=uac". The default
setting is "No".
This is used to set the callee party to act as refresher. If set to "Yes" and both parties
Callee Request
support session timers, the device will enable the session timer feature when it
receives inbound calls. The SIP 200 OK will include the content "refresher=uas". The
Timer
default setting is "No".
It is used to activate the session timer feature on the device. If it is set to "Yes", the
device will use the session timer even if the remote party does not support this feature.
If it is set to "No", the device will enable the session timer only when the remote party
Force Timer
supports this feature. To turn off the session timer, select "No". The default setting is
"No".
It is used to activate the PRACK (Provisional Acknowledgment) method. This option
is very important to support PSTN internetworking. PRACK improves the network
Enable 100rel
reliability by adding an acknowledgement system to the provisional Responses (1xx).
If set to "Yes", the device will respond to the 1xx response from the remote party. The
default setting is "No".
It is used to set the header tag from the SIP INVITE message for the Caller ID display.
If it is set to Auto, the device will use one of the available headers in the priority
hierarchy of P-Asserted Identify Header, Remote-Party-ID Header and From Header.
Caller ID Display
If it is set to "From Header", it will use the From Header information for the Caller ID.
If it is set to "Disabled", all the incoming calls Caller ID will be displayed with
"Unavailable". The default setting is "Auto".
Controls whether the Privacy header will present in the SIP INVITE message or not,
whether the header contains the caller info. When set to "default", the Privacy Header
Use Privacy
will show in INVITE only when "Huawei IMS" special feature is on. If set to "Yes", the
Header
Privacy Header will always show in INVITE. If set to "No", the Privacy Header will not
show in INVITE. The default setting is "Default".
It is used to set if the P-Preferred-Identity Header will be presented in the SIP INVITE
message. If set to "default", the P-Preferred-Identity Header will be omitted in SIP
Use P-Preferred-
INVITE message when "Huawei IMS" special feature is active. If set to "Yes", the P-
Identity Header
Preferred-Identity Header will always be presented. If set to "No", it will be omitted.
The default setting is "Default".
It is used to set the protocol used to transport the SIP message. It can be selected
SIP Transport
from TCP/UDP/TLS. The default setting is "UDP".
GVC3200/3202 Administration Guide
P a g e | 40