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The SIP trunk used for connection to the IP phones. Valid options: ATT SIP Trunk, Other SIP Trunk, Verizon SIP Trunk, KDDI SIP Trunk, Broadsoft Trunk, SoftBank ConnecTalk, SoftBank White Office, NTT DOCOMO Officelink, and Twilio SIP Trunk.

The SIP Trunk selected determines the field options displayed in Step 2. See see Step 2 - Configure SIP Details for Endpoint.

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These fields apply if you selected KDDI SIP Trunk in Step 1 - Select Scenario.

KDDI SIP Trunk 

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KDDI SIP Trunk
KDDI SIP Trunk

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These fields apply if you selected Twilio SIP Trunk in Step 1 - Select Scenario.

Field

Description

Border Element ServerThe FQDN or IP address of the Remote Peer service provider.
ProtocolThe IP protocol used for sending and receiving SIP messages between the SBC and the Border Element Server. Valid entries: UDP or TCP.
Port Number

The port number for the SIP server used to send and receive SIP messages between the SBC and the Border Element Server.

Use Secondary Border Element ServerEnables or disables the secondary Remote Peer service provider configured. 
Secondary Border Element ServerSpecifies the Secondary Border Element Service provider. Valid entry: IP Address or FQDN. This field is available only when Use Secondary Border Element Server is Enabled.
ProtocolThe Protocol used for communicating with the Secondary Border Element Server. Valid entry: UDP or TCP. This field is available only when Use Secondary Border Element Server is Enabled.
Port NumberThe Port Number is used for sending and receiving messages between SBC and the Secondary Border Element server. This field is available only when Use Secondary Border Element Server is Enabled.
Signaling/Media Source IPSelect the external (Internet-facing) IP address for the server that handles routing of messages for signaling and media.
Outbound NAT IP

Allows the SBC to be placed behind a NAT device, and uses the IP of the NAT device for all outgoing messages. If this field is set to Enable, the Public IP address field configuration is required. Valid selections:

  • Enable: Network Address Translation is used for the NAT device's Public IP address.
  • Disable: Network Address Translation address translation is not used.

NOTE: This field is required when the SBC interface has a private IP and the NAT device is using a public IP. For details on configuring an SBC behind the NAT, refer to Configuring the SBC Edge Portfolio for NAT Traversal.

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