Matrix ETERNITY NE System Manual 285
• CO - Mobile (Tx-Gain and Rx-Gain): Configure the Gain Setting that you want the system to apply on
the CO Port when the CO Port is connected to any Mobile Port of the system during an incoming or
outgoing call. Valid Range for Tx gain: +10dB to -15dB and Rx Gain +10dB to -15dB. Default: -0.6dB
for Tx Gain and -0.3dB for Rx Gain.
• Click Submit.
• Select the type of Answer Supervision
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supported by your Network from the following options. Default:
Pseudo Answer.
• Pseudo Answer: It is used when no signaling is available from the PSTN. If this option is selected, the
call will be considered as matured on the expiry of the 'Pseudo Answer Supervision Timer'
(configurable; default 10 seconds), irrespective of whether or not the call actually gets matured. After
this, the Call Duration Timer starts. Finally, the system starts detecting the "Disconnect Supervision"
signal configured for the CO port.
Select this option only if there is no Answer Supervision Signal supported.
• Polarity Reversal: It is used as maturity signal when the answer signaling is given in the form of
Battery Reversal. If the battery polarity of the line is -ve for TIP and +ve for RING, when the called party
has answered the call, the CO network will reverse the battery polarity, i.e. TIP becomes +ve and Ring
-ve. After this, the Call Duration Timer is started. Finally system starts detecting the Disconnect
Supervision signal configured for the CO port.
Select the same Answer Supervision signal as provided by your CO Network. If the type of Answer
Supervision signal selected in the system does not match with that of the CO network, the call will not be
stored in the Station Message Detail Record (SMDR) buffer. For example, if the CO network does not
support Answer Supervision, but you have selected Polarity Reversal or 12/16KHz as Answer Supervision
Type, the call will be considered as matured and will not be stored in the Station Message Detail Record
(SMDR) buffer. The same would be the case if you selected 12/16KHz when the CO supports Polarity
Reversal.
• If you selected Pseudo Answer as Answer Supervision signal, configure the Pseudo Answer
Supervision Timer.
This is the time period for which the system will wait before treating a call as matured (regardless of
whether or not it was answered). The range of this Timer is from 001 to 255 seconds. Default: 10 seconds.
When Pseudo Answer is selected as Answer Supervision signal, the call duration measured by the system
will not accurately reflect the actual call duration because the Pseudo Answer Supervision Timer is not
related to the actual call maturity. For example, if the Pseudo Answer Supervision Timer is set to 15
seconds, the call will be considered as matured after 15 seconds, even if it is answered after 20 seconds.
Similarly, if this Timer is set to 80 seconds, but the call was answered after 20 seconds and disconnected
after 40 seconds, this call will never be considered as matured as it ends before 80 seconds.
• Select the Disconnect Supervision
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signal type supported by your network from the following options.
Default: None.
60. It is a signal from the CO network to indicate to call maturity. Whenever you make an outgoing call from CO Trunk, the CO network
will give answer signaling when the called party answers the call.
This feature is particularly useful if you want to use “Call Cost Calculation (CCC)” to enable accurate billing. When the signal is
received, the billing will start and in the absence of this signal, the call will not be billed, ensuring that unanswered and unsuccess-
ful call attempts are not billed.
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