Method and system for adjusting line interface level to compensate for induced loss

摘要

An induced loss value is retrieved from a configuration file of an MTA device. The loss value is provided to a signal generator that generates call progress/alerting signals and FSK signals in the MTA telephony device. To mitigate the imbalance between incoming voice signal levels and call progress/alerting signals that may occur because the call progress/alerting signals are not generated at a level equal to that of the incoming voice signals, the loss/attenuation amount from the configuration file is used to adjust the levels of the generated call progress/alerting and FSK signals by a corresponding amount before they are attenuated along with the incoming voice signals.

主权项

1. A method for compensating the levels of tone signals for line interface losses, comprising:
retrieving a loss amount value from a configuration file, the loss value being associated with adjustments to the signaling information separately from adjustments applied to received voice information; adjusting the output level of a tone signal generator used to generate signaling information to set up and tear down telephonic calls, the adjusting being based on the loss amount value retrieved from the configuration file wherein adjusting the output level of a tone signal generator is performed separately of any adjustment of output level applied to received voice information; attenuating incoming call signaling and the adjusted output level of tone signals generated by the tone signal generator by an amount that corresponds to the loss amount value, wherein attenuation is applied to call signaling and the adjusted output level of tone signals separately of any attenuation applied to received voice information; and providing the attenuated incoming call signaling and attenuated output signals of the tone generator to a user device.