352 Matrix ETERNITY NE System Manual
This parameter will be checked when:
• SIP Trunk Mode is configured as Proxy.
• Registrar Server Address is configured as Domain and Outbound Proxy Address is blank OR Registrar
Server Address is configured as Domain/IP Address and Outbound Proxy Address is configured as
Domain.
• You can select whether or not the system should send the OPTIONS message periodically to the Proxy
Server to monitor its availability. Select the Send OPTIONS as Heartbeat check box to send the
OPTIONS message. Calls can be made and received only if the Proxy Server is alive.
If the Proxy Server is unavailable, like no response is received, the status of the SIP Trunk will display
“Heartbeat Failed” along with the Reason for Failure.
To view status of the Proxy Server, go to “SIP Trunk Status”.
If you enable Send OPTIONS as Heartbeat, you must configure the Heartbeat Interval.
• Define the Heartbeat Interval (Seconds), the time period, from 10 to 999 seconds, after which SARVAM
UCS should send the OPTIONS message to the Proxy Server. Default: 30 seconds.
• You can select whether or not the system should send Re-INVITE message from the SIP Trunk to the
Remote Peer, when an external call over the SIP Trunk is put on hold by the extension user. Set Send Re-
INVITE over SIP Trunk on Hold as per the requirement of the Remote Peer. The Remote Peer can be a
Proxy Server or a SIP Device.
By default, Send Re-Invite over SIP Trunk on Hold is disabled. For more information see “Call Hold”.
• Enable the Delayed Offer check box, if you want the SIP Trunk to generate INVITE without SDP. Default:
Disabled.
• SARVAM UCS extensions may be assigned DDI numbers by the ITSP. When INVITE is received from
ITSP, the ITSP may send the DDI number either in the “Request URI” of the INVITE message or in the
“To:” field of the INVITE message. Set the Fetch Called Party Number From option as per the
requirement of your ITSP.
Default: Request URI.
• If you want SARVAM UCS to display the called party number received in the INVITE message as the CLI,
select the Display Called Party Number as CLI check box. By default, Display Called Party Number as
CLI option is disabled.
This parameter is useful when a single SIP Trunk having DDI Numbers and Operator are shared by more
than one organization. If you enable this option, make sure:
• you configure the names and corresponding numbers of the organizations sharing the SIP Trunk in the
Global Directory of SARVAM UCS.
• the Operator has an Extended IP Phone or a Mobile Softphone Client.
With this option enabled, the Operator will be able to handle calls more efficiently. When there is an
incoming call, SARVAM UCS matches the number with the numbers configured in the Global Directory. If a
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