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PSTN Pass Through Unicorn3112 supports PSTN pass through using the FXS port. Configure the Use Random Port to NO when completing Direct IP calls. For example: calling dial *473 follow by # calling dial *4723 follow by # calling dial *47123 follow by # NOTE: If you have a SIP Server configured, a Direct IP-IP still works.

Controlled static IP usage is recommended. This simulates a PBX function using the CMSA/CD without a SIP server. This enables the phone to make direct IP-calls, using only the last few digits (last octet) of the target phone s IP-number.Ģ This is possible only if both ATA are in under the same LAN/VPN. Quick IP Call Mode The Unicorn3112 also supports Quick IP call mode. You can not make direct IP calls between FXS1 to FXS2 since they are using same IP. NOTE: When completing direct IP call, the Use Random Port should set to NO. b) If the target IP address/port is :5160, then the dialing convention would be: *47 or Voice Prompt with option 47, then 192*168*0*160*5160 followed by pressing the # key if it is configured as a send key or wait for 4 seconds. In this case,the default destination port 5060 is used if no port is specified. Examples: a) If the target IP address is, the dialing convention is *47 then 192*168*0*160 followed by pressing the # key or wait for 4 seconds. Destination ports can be specified by using * (encoding for : ) followed by the port number.

Enter the target IP address using same format as above. Pick up the analog phone then dial *47 2. Elements necessary to completing a Direct IP Call: Both Unicorn3112 and other VoIP Device, have public IP addresses, or Both Unicorn3112 and other VoIP Device are on the same LAN using private IP addresses, or Both Unicorn3112 and other VoIP Device can be connected through a router using public or private IP addresses (with necessary port forwarding or DMZ). 1 Unicorn3112 Tips Direct IP Calls.1 Quick IP Call Mode.1 PSTN Pass Through.2 VoIP-to-PSTN Calls.2 PSTN-to-VoIP Calls.3 Route Calls to PSTN.4 Forward Calls to PSTN.4 Forward Calls to VoIP.4 One Stage Dialing.5 Direct IP Calls Direct IP calling allows two parties, that is, a FXS Port with an analog phone and another VoIP Device, to talk to each other without a SIP proxy.