AT&T DataRemote POTS in a BOX CDS9070 - Direct IP Calls

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4.10.2 Direct IP calls
Direct IP calling allows two phones (an ATA with an analog phone and another VoIP Device) to talk to each other
without a SIP proxy. VoIP calls can be made between two phones if:
a) Both ATA and the other VoIP device (i.e. another ATA or other SIP product) have public IP addresses
- or -
b) Both ATA and the other VoIP device (i.e. another ATA or other SIP product) are on the same LAN using private
or public IP addresses
- or -
c) Both ATA and the other VoIP device (i.e. another ATA or other SIP products) can be connected through a router
using public or private IP addresses
To make a call, first pick up the analog phone, input the IP address directly, and end with “#”