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The Fully Qualified Domain Name (FQDN) feature supports entering a Fully Qualified Domain Name instead of an IP Address into the c= line of the SDP on the outgoing leg. If the outgoing Fully Qualified Domain Name (FQDN) is configured and enabled in the SIP Profile pane, the SIP Signaling and/or VoIP module IP addresses will be replaced with the FQDN in the outgoing request and/or outgoing SIP response. Follow the procedure below to configure FQDN on IMG 2020.
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The procedure below explains how to configure the IMG 2020 to execute a DNS Query on the outbound leg. Before configuring the outbound FQDN feature, the IMG 2020 must have an initial configuration created on it. Follow the Basic Configurations procedure before proceeding.
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Right click on the Dialogic object and select New External Network Elements. Refer to the External Network Elements topic for more information on configuring this object.
Right click on the External Network Elements object and select New DNS Servers. Refer to the DNS Servers topic for more information on configuring this object.
Right click on the DNS Servers object and select New DNS Server. Enter IP Address of this DNS server. Refer to the DNS Server topic for more information on configuring the remaining fields in this object.
Right click on the IMG 2020 physical node object and select New DNS Client. The IP address will default to the IP address of the Control Port. Select from drop down menu in the Primary DNS Server field the DNS Server just created. Refer to the DNS Client topic for more information on configuring the remaining fields in this object.
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Right click on the Dialogic object and select New External Network Elements. The External Network Elements object is a container object and no configuration is needed in this object. Refer to External Network Elements for more information.
Right click on External Network Elements object and select New External Gateways. The External Gateways object is also a container object. Under the External Gateways object, multiple individual gateways can be created. Refer to External Gateways topic for more information.
Right click on External Gateways and select New External Gateway. Refer to the screen capture and table below.
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The configuration above displays how to configure the SIP Profile and External SIP Gateway so that the FQDN Support feature is configured. The next step is to configure the SIP signaling stack and SIP Channel Groups. Refer to the Configure SIP (Single SIP IP) topic for a procedure on how to configure the SIP functionality. When referencing the Configure SIP topic, the procedure describes the steps required to configure the SIP stack and associated objects. The procedure does not describe certain settings that are pertinent to the FQDN Support feature. Below is short procedure and a screen capture of what needs to be configured in the SIP Signaling object for this feature.
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Right click on the IMG 2020 physical node object and select New Signaling. The Signaling topic is a parent or container object and no configuration is needed here. Refer to the Signaling topic for more information.
Right click on the Signaling object just created and select New SIP. Refer to the SIP Signaling topic for information on how to configure this object.
Right click on the SIP Signaling object and select New SIP IP Address. Enter a FQDN in the Fully Qualified Domain Name (FQDN) field. Refer to the screen capture below.
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Refer to SIP Signaling - IP Address topic for more information on configuring each of the individual fields within this object.
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The procedure below describes what needs to be configured if the FQDN Support feature utilizes a SIP Virtual Address. In this scenario, the SIP signaling stack must be configured to Single IP Mode. Within the SIP Signaling object, the IP Operation Mode field must be set to Single IP. Refer to the IMG 1010 - SIP Signaling Object topic for information on this.
Right click on IP Network object and select IP Address. In the Source Endpoint field select Services from the drop down menu. Enter an IP Address for this interface and enter the Default Gateway IP address.
Click In the Gratuitous ARP and ARP Responses field select Disable from the drop down menu.
In the Fully Qualified Domain Name field enter the FQDN. Refer to IP Address topic for more information on configuring the remaining fields in this object.
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Right click on the physical node object and select New Signaling. The Signaling object is a parent or container object and no configuration is needed here. Refer to the topic for more information on this object.
Right click on the Signaling object and select New SIP. Verify that the IP Operation Mode field is set to Single IP. Refer to the IMG 1010 - SIP Signaling Object topic for information on configuring each of the remaining fields in this object.
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Right click on the SIP Signaling object created earlier and select New SIP Virtual Address. The SIP Virtual IP Address field will be automatically populated with the address of the interface that has the Gratuitous ARP and ARP Responses field set to Disable. Refer to screen capture below.
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Refer to SIP Signaling - Virtual Address for more information on this object.
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The configuration above displays how to configure the SIP Profile, External SIP Gateway, and SIP Virtual Address so that the SIP FQDN Support feature is configured. The next step is to configure the SIP Channel Groups. Refer to the Configure SIP (Single SIP IP) topic for a procedure on how to configure the SIP functionality.
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dialogic-voip-src-sig-fqdn
dialogic-voip-src-rtp-fqdn
dialogic-voip-dst-rtp-fqdn
Refer to the RADIUS - Dialogic VSA's topic for more information.
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