Fxo Impedance Matching; Fxs Ports - Cisco UC320W Administration Manual

• When finished, click Apply Now to immediately apply the new settings. You can check the new
settings by placing calls through your FXO trunks. Make additional adjustments, if needed.
• To revert to the default settings, click Restore Defaults or Reset.
• To close the window without applying any changes, click Cancel.

FXO Impedance Matching

Important: For testing, the trunk must be connected to a Cisco UC320W FXO port. After the test, if you
wish to connect the trunk to a Cisco SPA8800 instead, you can input the recommended settings in the
fields for the SPA8800. Take care to ensure that you physically connect the trunk to the corresponding
SPA8800 port.
1. Phone number for testing: Enter an external phone number, without spaces or punctuation. Choose
a phone that you can answer during this test. No steering digit is required for an FXO call.
2. Choose a test port on the UC320W, and physically connect the test trunk to this port. All enabled
ports are listed.
3. Start: Click this button to start the test. When your phone rings, answer it and immediately press the
Mute button. The call will be active for about 7 minutes while the test tones are transmitted.
Note: Click Stop if you do not want to continue the test.
4. When the status icon and recommended settings appear, hang up your phone. Note: For more
information about the status icons, position your mouse pointer over the information button on the
screen.
5. In the lower half of the screen, find the port where you want to use this trunk, and enter the settings:
• Impedance: Based on the test results, enter the recommended Impedance setting.
• Co-Termination: Based on the test results, enter the recommended Co-Termination setting.
• Line Type: Based on the test results, enter the recommended Line Type setting.
6. Physically connect the tested trunk to the selected port. Refer to the port labels on the device to
ensure that you use the correct port.
7. If needed, repeat the above steps for other trunks.
8. Complete the procedure:
• Apply Now: Click to immediately apply the settings.
• Cancel: Click to close the window without making any changes.

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-phone license limit. Note: Only 24 phones,
including all enabled Cisco SPA8800 FXS ports, may
be licensed to the Cisco UC320W. The built-in FXS port on the Cisco UC320W does not count towards
this license limit.
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