Grandstream Networks GXP1450 User Manual page 35

Use Actual Ephemeral
Port in Contact with
TCP/TLS
Check Domain
Certificate
Remove OBP from
Route
Validate Incoming
Messages
Support SIP Instance ID Selects whether or not SIP Instance ID is supported.
NAT Traversal
SUBSCRIBE for MWI
SUBSCRIBE for
Registration
Feature Key
Synchronization
Proxy-Require
Voice Mail UserID
Grandstream Networks, Inc.
Enable to use actual ephemeral port in contact with TCP/TLS. Default is "No".
Enable to check the domain certificate. Default is "No".
The SIP Extension notifies the SIP server that it is behind a NAT/firewall.
This configuration selects whether or not the incoming messages should be
validated.
This parameter activates the NAT traversal mechanism. It has options: No, STUN,
Keep-Alive, UPnP, Auto, VPN.
If selecting STUN and a STUN server is also specified, the phone performs
according to the STUN client specification. Using this mode, the embedded STUN
client detects if and what type of NAT/Firewall configuration is used. If the detected
NAT is a Full Cone, Restricted Cone, or a Port-Restricted Cone, the phone will use
its mapped public IP address and port in all of its SIP and SDP messages.
If selecting Keep-Alive with no specified STUN server, the GXP1450 will periodically
(every 20 seconds or so) send a blank UDP packet (with no payload data) to the
SIP server to keep the "hole" on the NAT open.
Default is "No". When set to "Yes" a SUBSCRIBE for Message Waiting Indication
will be sent periodically.
Default is "No". When set to "Yes" a SUBSCRIBE for Registration will be sent
periodically.
Default is "No". This option is to synchronize DND/Call Forward features with
Broadsoft platform.
When set to "Yes", a SUBSCRIBE will be sent out periodically to the server. Then
when DND/Call Forward features (Call Forward No Answer, Unconditional Call
Forward and Call Forward on Busy) are configured or changed on the phone and
Broadsoft server side, those features will be synchronized on the phone side and
Broadsoft server side.
SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
When configured, user can access messages by pressing "MSG" button. This ID is
usually the VM portal access number.
GXP1450 User Manual
Firmware 1.0.1.110
Page 34 of 42
Last Updated: 01/2012