System information

Ports and Trunks
FXS Ports
Cisco Unified Communications UC320W Administration Guide 37
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FXS Ports
Use the Configuration > Ports and Trunks > FXS Ports page to enable the phone
(FXS) ports on the Cisco UC320W and Cisco SPA8800 IP telephony gateways.
These ports support analog devices.
Note: Refer to the on-screen illustration for the location of the FXS ports, where
you can connect analog devices. You can position your mouse pointer over the
pointer icon to view the picture at a larger size.
Enabled: Check this box to enable the port. Uncheck the box to disable the port.
As a best practice, enable the ports only as needed, to avoid unnecessary impact
on the 24-user limit. This limit applies to all IP phones and all enabled FXS ports on
SPA8800 gateways. It does not include the built-in FXS port on the Cisco
UC320W.
SIP/BRI Trunks
Use the Configuration > Ports and Trunks > SIP/BRI Trunks page to enter the
settings for the SIP providers and BRI gateways that provide Voice over IP (VoIP)
services. You can add up to four different services.
Note: This configuration page is available if the System Mode is set to PBX or
Blend. It is not available in Key System mode. (For more information, see the
PBX/
Key System
page.)
About SIP/BRI Trunks
• The Cisco UC320W supports up to 12 simultaneous calls across all trunks
(including FXO and SIP/BRI trunks).
• To configure the dialing prefix for outbound call routing through your FXO
trunks and SIP/BRI trunks, see the
Outbound Trunks page.
• To enter the phone numbers and configure the inbound call routing for these
trunks, see the
Inbound Calls page.
• After applying your configuration, verify your settings by placing outbound
calls through this trunk. Also use an external phone such as a cell phone to
place a call to the phone numbers for this trunk.