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Voice Cards 13-13
FXO Card FXO Card User Screens and Settings
Rx ABCD
The Receive ABCD setting allows you to either monitor the status of the ABCD signaling bits
being received from the network or set a specific ABCD pattern for testing the receive side of
the circuit. The options for this field are mon (monitor) or set. Choosing set will bring up a
four-digit field for you to input the ABCD pattern you want to receive. Any four digit
combination of ones and zeros is acceptable for this setting.
T-R-CNTL
The Tip and Ring Control setting allows you to either monitor (mon) or set (set) the state of
the Tip and Ring leads of an FXO port. Choosing set will bring up the following options:
• loop (the Tip and Ring leads are tied together)
• open (the Ring lead is not connected to either Tip or ground)
TO USER
In cross-connect systems only, the To User parameter allows you to break the circuit and send
a 0dB test tone toward the user side of the system. The options for this field are PCM, 300Hz,
1 kHz, 3 kHz and quiet. Selecting PCM means that you do not want to inject a tone toward
the user and that the PCM signal received from the network should continue to be sent to the
user port in the normal manner.
TO NTWK
In cross-connect systems only, the To Network parameter allows you to break the circuit and
send a 0dB test tone toward the network side of the system. The options for this field are PCM,
300Hz, 1 kHz, 3 kHz and quiet. Selecting PCM means that you do not want to inject a tone
toward the network and that the PCM signal received from the user port should continue to be
sent to the network in the normal manner.
Tx ABCD
The Transmit ABCD information field shows the current values of the ABCD bits that are
being transmitted to the network. If TX ABCD in the top half of the screen is changed via the
set function mentioned above, and the settings are saved by the Save command in the Menu
of Actions, the new bit pattern chosen will be reflected here.