Grandstream Networks GHP6 Series - SIP transport; SIP Registration; Register Expiration; Enable SIP OPTIONS;NOTIFY Keep Alive

SIP transport
User can select UDP or TCP or TLS. Please make sure you’re SIP Server or network
environment supports SIP over the selected transport method. Default is UDP.
SIP Registration
This parameter controls whether the GXW42XX needs to send REGISTER messages
to the proxy server. The default setting is “Yes”.
Unregister on Reboot
Default isNo. If set to “Yes”, the SIP user’s registration information is cleared on
reboot.
Add Auth Header on Initial REGISTER
Default isNo. If set to “Yes”, an Authentication Header with blank nonce will be
added in the initial REGISTER.
Outgoing Calls Without Registration
If set to “Yes,” user can place outgoing calls even when not registered (if allowed by
Internet Telephone Service Provider) but is unable to receive incoming calls.Any
port, member of a Hunting Group that is not registered with a SIP account, will be
able to place outbound calls using the SIP credentials of the primary Hunting Group
port. Default isNo.For example: Port 1, 3 and 5 are members of the same Hunting
Group. Port 1 is registered with a SIP account. Ports 3 and 5 are not registered.
Ports 3 and 5 will be able to place outbound calls using the SIP account of port 1,
even ifOutgoing Call without Registrationis set to No.
Register Expiration
Allows the user to specify the time frequency (in minutes) for the GXW42XX to
refresh its registration with the specified registrar. The default interval is 60 minutes
(or 1 hour). The maximum interval is 65535 minutes (about 45 days).
SIP Registration Failure Retry Wait Time
Allows the user to specify the time frequency (in seconds) for the GXW42XX to re-
register after registration failure. The default interval is 20 seconds. The maximum
interval is 3600seconds (1 hour).
SIP Registration Failure Retry Wait Time
upon 403 Forbidden
Default is1200sec. Specifies the interval to retry registration if the process is failed
due to 403 Forbidden. Valid range is 0 to 3600 in second. 0 second means stop retry
registration.
Reregister Before Expiration
Determines how many seconds before the previous registration expires that the port
should reregister.
Enable SIP OPTIONS/NOTIFY Keep Alive EnableSIP OPTIONSorSIP NOTIFYkeep-alive. Default isNo.
SIP OPTIONS/NOTIFY Keep Alive Interval Time interval for OPTIONS/NOTIFY Keep Alive feature in Second.Default is30.
SIP OPTIONS/NOTIFY Keep Alive Max
Lost
Number of max lost packets for SIP OPTIONS/NOTIFY Keep Alive before re-
registration. Between 3-10. Default is3.
Local SIP Port
Defines the local SIP port the GXW42XX will listen and transmit. The default value
for Profile 1 is 5060 and 6060 for Profile 2.
Use Random SIP Port
Default isNo. If set to Yes, the device will pick randomly-generated SIP ports. This is
usually necessary when multiple GXW42XX /HT50X are behind the same NAT.
Local RTP port
Defines the local RTP port used to listen and transmit RTP packets. The default value
is 50000 for Profile 1, 51000 for Profile 2, 52000 for Profile 3 and 53000 for Profile
4.
SIP T1 Timeout
T1 is an estimate of the round-trip time between the client and server transactions.
If the network latency is high, select a larger value for more reliable usage..
SIP T2 Timeout Maximum retransmission interval for non-INVITE requests and INVITE responses.
Remove OBP from Route Header
Default isNo. If set to Yes, the Outbound Proxy will be removed from the route
header.
Support SIP Instance ID
Default isYes. If set to Yes, the contact header in REGISTER request will contain SIP
Instance ID as defined in IETF SIP Outbound draft.
Hold Target Before Refer
Default isYes. Select whether the gateway will send ReINVITE to hold transfer target
before sending REFER to transferee.
Refer-To Use Target Contact
Default isNo. If set to YES, then for Attended Transfer, the “Refer-To” header uses
the transferred target’s Contact header information. 