Specifications

MyPBX U5XX Administrator's Guide
www.yeastar.com Page 127
other analog devices to your PBX
FXO (Foreign Exchange Office) is an interface that connects to a phone line to
supply your PBX with access to a public telephone network. FXO interfaces use
FXS signaling. FXO interfaces allow you to connect your PBX to real analog
phone lines.
9.1.1 Sample Routing via E1 Trunk
Let‟s route all inside extensions through an E1 trunk by dialing 9. In
Outbound Routes, add a new outbound route as below.
Figure 9-1
As we can see from the outbound route of „pstnout‟, all phone numbers
starting with 9 will have their first digit stripped off (digit 9) and will be sent
to the E1.
After we have configured the above, we can dial 9 + local number to dial out
via a E1 trunk.