Patton electronic 4110 - Manual (Page 28)

2 • Applications Overview Model 4520 & 4110 Series Getting Started Guide
28 Applications for SmartNode 4110 Series
Application—PBX toll bypass gateway
The gateways can be used to provide toll bypass over an IP WAN (see figure 11 ). The call routing in this case is
provided by the PBX systems. A call routed to the FXS gateway can be relayed on a port-to-port basis to the
remote gateway or on a dialled number basis.
Note With the use of FXS ports extension dialing on the secondary side must be
done through two stage dialling (DTMF relay).
Figure 11. Toll bypass