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Voice Cards 13-7
FXO Card FXO Card User Screens and Settings
Electromechanical) used for timing relays that are specific to Russia. If you selected mrd as
the Mode, then Signal will automatically default to mrd. If you select fxodn in Mode the
options are loop, gs, lp-fd, R2, gs-a and lp-em. For fxo the additional option is ls-R2.
CAUTION!
Before activating a port, verify the behavior expected by both the station equipment and the
remote central office equipment and ensure that you have the system properly configured.
Rx TLP
The Receive Transmission Level Point setting controls the amount of gain or attenuation
added to signals after they are decoded to analog signals. To increase the signal level, set the
Rx TLP setting to a positive number (i.e., the larger the number, the more gain is added). To
decrease the signal level, set the Rx TLP setting to a negative number (i.e., the more negative
the number, the more the signal level is decreased). For example, an incoming signal at -5
dBm can be increased to -3 dBm by setting Rx TLP to +2 dB. Acceptable values range from
-10.0 dB to +2.0 dB.
Tx TLP
The Transmit Transmission Level Point setting controls the amount of gain or attenuation
added to signals after they are received from the local analog port and before they are encoded
to digital PCM signals. To increase the signal level, set the Tx TLP setting to a negative
number (i.e., the more negative the number, the more gain is added). To decrease the signal
level, set the Tx TLP setting to a positive number (i.e., the more positive the number, the more
the signal level is decreased). For example, an incoming signal at -5 dBm can be increased to
-2 dBm by setting Tx TLP to -3 dB. Acceptable values range from -10.0 dB to +5.0 dB.
CODING
The Coding setting sets the PCM companding method used for a port. Generally, the North
American T1 environment uses m-law coding. The International E1 environment uses a-law
or a-inv (inverted A-law) coding, and a-inv provides a higher ones density than a-law. The
coding default is determined by the type of card in the WAN port you select.
TC CGA
The Trunk Conditioning during Carrier Group Alarm setting defines whether the FXO port
should be placed in idle or busy mode upon declaration of a Carrier Group Alarm (CGA) on
the WAN link to which the port is assigned. In most cases, you should set this parameter to