66 Digital Telephone IP Adapter Installation and Administration Guide
Planning for installation Standard 2.1
!The RLC requires an IP address that the Digital Telephone IP Adapter unit
can access.
Model 2: IP on-demand
If your BRI routers incur toll charges, configure an IP on-demand connection.
!TCP/IP signaling sessions between the RLC and the Digital Telephone IP
Adapter unit close when calls end.
!Configure a static IP address for the Digital Telephone IP Adapter unit on
the RLC for best service.
!IP on-demand configuration supports VPNs.
!IP on-demand configuration does not support NAT or PNAT routers.
!Both the RLC and Digital Telephone IP Adapter unit require IP addresses
that are accessible from the other unit.