Grandstream Networks GAC2500 Administration Manual page 45

Incoming INVITE
Authenticate Incoming
INVITE
Only Accept SIP Requests
from Known Servers
Allow SIP Reset
SIP T1 Timeout
SIP T2 Interval
SIP Timer D Interval
Remove OBP from Route
Check Domain Certificates
Validate Certification Chain
Auto-filling Pickup Feature
Code
Pickup Feature Code
of the SIP INVITE message from the remote party. If it doesn't match the
phone's SIP User ID, the call will be rejected. The default setting is "No".
Configures the phone system to authenticate the SIP INVITE message
from the remote party. If set to "Yes", the phone will challenge the
incoming INVITE for authentication with SIP 401 Unauthorized response.
The default setting is "No".
Answers the SIP request from saved servers when set to "Yes", only the
SIP requests from saved servers will be accepted; and the SIP requests
from the unregistered server will be rejected. The default setting is "No".
Configures whether to allow SIP Notification message to perform factory
reset on the phone. The default setting is "No".
Defines an estimate of the round-trip time of transactions between a client
and server. If no response is received in T1, the figure will increase to 2*T1
and then 4*T1. The request re-transmit retries would continue until a
maximum amount of time define by T2.The default setting is 0.5 sec.
Specifies the maximum retransmit time of any SIP request messages
(excluding the SIP INVITE message). The re-transmitting and doubling of
T1 continues until it reaches the T2 value. The default setting is 4 sec.
Defines the amount of time that the server transaction can remain when
unreliable response (3xx-6xx) received. The valid value is 0-64 seconds.
The default value is 0.
Configures the phone system to remove the outbound proxy URI from the
Route header. This is used for the SIP Extension to notify the SIP server
that the device is behind a NAT/Firewall. If it is set to "Yes", it will remove
the Route header from SIP requests. The default setting is "No".
Sets the phone system to check the domain certificates if TLS/TCP is used
for SIP Transport. The default setting is "No".
Configures whether to validate certification chain, when TLS/TCP is
configured for SIP Transport. If this is set to "Yes", phone will validate
server against the new certificate list. The default setting is "No".
Sets if the phone system will add the configured feature code to retrieve
parked calls. If it is set to "Yes", the "Pickup Feature Code" configured will
be automatically prepended on the phone's dial pad when retrieving the
parked call. The default setting is "Yes".
Configures the pickup feature code for call park. If "Auto-filling Pickup
Feature Code" is set to "Yes", this pickup feature code will be
automatically filled in on the phone's dial pad when picking up the parked
call.
GAC2500 Administration Guide
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