Grandstream Networks HT818 Administration Manual page 26

• Saved on until no response SIP request will always be sent to the registered IP address only until registered IP
address is unreachable.
When the primary SBC is up, device will send SIP requests to the primary SBC. If at any point device fails over to the
Failback Timer secondary SBC, the SIP requests will stay on the failover SBC for the duration of the failback timer. When the timer
expires, device will send SIP requests to the primary SBC, (in minutes. Default is 60 minutes, max 45 days).
Register This feature is used to control whether the device need to initiate a new registration request (following existing DNS
before DNS SRV fail-over mode) first and then direct the non-registration SIP request (INVITE) to the new successfully
SRV Failover registered server or not.
Indicates E.164 number in "From" header by adding "User=Phone" parameter or using "Tel:" in SIP packets, if the
HT81x has an assigned PSTN Number.
Disabled: Use "SIP User ID" information in the Request-Line and "From" header.
TEL URI User=Phone: "User=Phone" parameter will be attached to the Request-Line and "From" header in the SIP request to
indicate the E.164 number. If set to "Enable".
Enabled: "Tel:" will be used instead of "sip:" in the SIP request.
Please consult your carrier before changing this parameter. Default is Disabled.
Use Request
Routing ID in If set to Yes, device will use the configured [Request URI Routing ID] in the SIP INVITE. This option is usually used
SIP INVITE under a SIP trunk account's configuration. Default is No.
Header
SIP
Controls whether the HT81x needs to send REGISTER messages to the proxy server. Default setting is Yes.
Registration
Controls whether to clear SIP user's information by sending un-register request to the proxy server. The un-
registration is performed by sending a REGISTER message with "Expires=0" parameter to the SIP server. This will
unregister the SIP account under the concerned FXS page.Unregister on reboot option can be set to "No", "All" or
"Instance".
1. Set to "No": If the "Unregister on reboot" option is set to "No", it means that the SIP user's information will not be
cleared when the device reboots. In other words, the SIP account will remain registered with the server even
Unregister on
after the device is rebooted.
Reboot
2. Set to "All": If the "Unregister on reboot" option is set to "All", it means that all SIP accounts associated with the
device will be unregistered when the device reboots. This option clears the SIP user's information for all the FXS
ports on the device.
3. Set to "Instance": If the "Unregister on reboot" option is set to "Instance", it means that only the SIP account
associated with the concerned FXS port will be unregistered when the device reboots. This option clears the SIP
user's information for only the specific FXS port that is affected by the reboot.
Default value is set to "No"
Outgoing Call
Enables the ability to place outgoing calls even if the account is not registered (if allowed by ITSP); device will not
Without
be able to receive incoming calls. Default is No.
Registration
Refreshes registration periodically with specified SIP proxy (in minutes). Maximum interval is 65535 minutes (about
Register
45 days).
Expiration
Default is 60 minutes (or 1 hour).
Reregister
Sends re-register request after specific time (in seconds) to renew registration before the previous registration
Before
expires.
Expiration
SIP
Sends re-register request after specific time (in seconds) when registration process fails. Maximum interval is 3600
Registration
seconds (1 hour).
Failure Retry
Default is 20 seconds.
Wait Time