How do I set up Call Termination on FXO?
To set up Call Termination on the MP-1xx FXO, use the following 5 methods supported by the MP-1xx FXO:
1 Detection of polarity reversal / current disconnect (Go to)
2 Detection of Reorder / Busy tones (Go to)
3 Detection of silence (Go to)
4 Interruption of RTP stream (Go to)
Note that the disconnection methods used by the MP-1xx must be supported by the CO or PBX.
Detection of Polarity Reversal / Current Disconnect
This is the recommended method. The call is immediately disconnected after polarity reversal or current disconnect is detected on the Tel side (assuming the PBX / CO produces this signal). Relevant ini file parameters: EnableReversalPolarity and EnableCurrentDisconnect.
Detection of Reorder / Busy Tones
The call is immediately disconnected after a Reorder / Busy tone is detected on the Tel side (assuming the PBX / CO produces this tone). This method requires the correct tone frequencies and cadence to be defined in the Call Progress Tones file. If these frequencies are not known, define them in the CPT file (the tone produced by the PBX / CO must be recorded and its frequencies analyzed). This method is slightly less reliable than the previous one.
Detection of Silence
The call is disconnected after silence is detected on both call directions for a specific (configurable) amount of time. The call isn’t disconnected immediately; therefore, this method should only be used as a backup. Relevant ini file parameters: EnableSilenceDisconnect and FarEndDisconnectPeriod (with DSP templates number 2 or 3).
Interruption of RTP Stream
Relevant ini file parameters:
BrokenConnectionEventTimeout and DisconnectOnBrokenConnection. This method works correctly only if silence suppression is not used.
Detection of Silence
The call is disconnected after silence is detected on both call directions for a specific (configurable) amount of time. The call isn’t disconnected immediately; therefore, this method should only be used as a backup. Relevant ini file parameters: EnableSilenceDisconnect and FarEndDisconnectPeriod (with DSP templates number 2 or 3).
Interruption of RTP Stream
Relevant ini file parameters:
BrokenConnectionEventTimeout and DisconnectOnBrokenConnection. This method works correctly only if silence suppression is not used.
