MyPBX Standard User Manual
www.yeastar.com Page 115
6. Use MyPBX
6.1 Make outbound call
To make an outbound call, we need to add trunk first. There are five types of
VoIP Trunk:
·Analog Trunk: FXO ports of MyPBX, connected to a local PSTN.
·GSM Trunk: GSM ports of MyPBX, connected to GSM Network.
·BRI Trunk: BRI ports of MyPBX, connected to a local PSTN.
·VoIP Trunk: Connected to remote VOIP service server.
·Service Provider: Connected to service provider server.
What are FXO and FXS?
FXS (Foreign exchange Station) is an interface which drives an analog
telephone or FAX machine. FXS interfaces deliver power, provide ringing, and
use FXO signaling. FXS interfaces are what allow you to hook telephones and
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.
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