User's Manual

Grandstream Networks, Inc. GXV3140H USER MANUAL Page 44 of 146
FIRMWARE VERSION 1.0.7.2 Updated : 11/2010
DNS Mode The default is set to A Record. If the user wishes to locate the server by DNS
SRV, the user may select SRV or NATPTR/SRV.
NAT Traversal This setting decides whether the NAT traversal mechanism is activated. If it
is set to “Yes” and STUN server is configured, the GXV3140H will route
according the STUN server.
In this mode, the STUN client embedded in the phone will communicate with
the appointed STUN server to examine which type of Firewall/NAT setting is
employed. If the type of NAT detected is Full Cone, Restricted Cone or
Port-Restricted cone, the phone will try to use public IP addresses and port in
all the SIP and SDP messages.
If the “NAT Traversal(STUN)” is configured to be “No, but keep-alive”, the
phone will send an empty SDP packet (without payload data) to the SIP
server once in 20 seconds to keep the NAT port open. If an outbound proxy
server is used, please configure this to be “NO”.
Proxy Require Notifies the SIP server that the unit is behind a NAT/Firewall.
Account/SIP Settings
SIP Registration Selects whether or not the GXV3140H will send a SIP Register message to
the proxy; The default setting is YES.
Unregister On Reboot If set to YES, the SIP user registration messages will be cleared on reboot.
The default setting is YES.
Register Expiration (m) This defines the expiration time of the registration in minutes. The default
value is 50 minutes; the maximum value is 65535 minutes (approximately
45 days) and the minimum value is 5 minutes.
Wait Time Retry
Registration (s)
The wait time for registration retry if registration fails. The default is set to
20 Seconds.
Local SIP Port The local SIP port for sending and receiving data. The default settings for
Account 1/2/3 are 5060/5062/5064.
Subscribe for MWI Default is set to No. When selected, a SUBSCRIBE for Message Waiting
Indication will be sent out periodically.
Session Expiration (s) Session Expiration is the time (in seconds) at which the session is
considered timed out if no successful session refresh transaction occurs
beforehand. The default value is 180 seconds.
MIN-SE (s) The minimum session expiration (in seconds). The default value is 90
seconds.
UAC Specify Refresher As a Caller, select UAC to use the phone as the refresher, or select UAS to
use the Callee or proxy server as the refresher.
UAS Specify Refresher As a Callee, select UAC to use the caller or proxy server as the refresher,