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The extension account of the FXS port
If it is enabled, the FXS extension account will be registered to a SIP server.
Master Server: The address and port of the master SIP server; make reference to
Trunk SIP;
Slave Server: The address and port of the slave SIP server; make reference to
Trunk SIP. The slave server will be in use when it is successfully registered
but the master server fails to be registered
Auth Username: the auth username of the SIP server; it is optional to fill in.
Password: the password of the SIP server; it is optional to fill in.
Direct Inward Dialing; if the called number is same with DID, the call will be
directly forwarded to the extension, rather than choosing a route.
The receiving gain of the FXS port
The sending gain of the FXS port
The FXS profile that is selected for the FXS extension; make reference to
Profile FXS/FXO
If it is enabled, the FXS port is available; if it is disable, the FXS port is
unavailable
Note:
SIP server is a main component in a VoIP network and is responsible for establishing conversations for
SIP calls. IPPBX, softswitch, UC2000 and UC100 can serve as a SIP server.
SIP servers based on Linux include OpenSER, sipXecx, VoS and Mera.
SIP servers based on Windows include miniSipServer, Brekeke and VoIPswitch.
Softswitches of Cisco, Huawei and ZTE can also serve as SIP server.
4.7.3 Ring Group
On the Ring Group interface, you can group several extensions (FXS extensions or SIP extensions)
together and set strategy for choosing which extension to ring under a ring group. The ring group function
is widely used in call centers.