Nexo FXO-128o, User Manual

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4 Configurations on Web Interface
DTMF, Pulse, Pulse before DTMF
On-hook when Busy
Tone Detected Polarity
Normal Detected Current
Detected
After enabling this function, the FXO gateway calls the
PSTN, the FXO device hang up when: busy tone
detected ,polarity normal detected and current detect .
DC Impedance The impedance parameters when FXO gateway is connected to
PBX or PSTN.
FXO Min On-hook Minimum on-hook voltage of FXO gateway
Voltage
Busy Tone Detected The busy tone detection cadence needs to be set according to the
busy tone system of the PSTN. If you do not know the busy tone
Cadence standard, you can use the busy tone detection function to detect
the busy tone cadence.
The cadence count is used to detect the validity of the busy tone.
Cadence Count When multiple busy tone beats are continuously detected, it is as
a valid busy tone.
Delta The error value of busy tone detection cadence
On
→
Off Energy
The energy threshold of busy tone from On to Off .
Threshold
Off→ On Energy The energy threshold of busy tone from Off to On.
Threshold
Acim The value of AC impedance
Hybrid The value of hybrid balance parameters
4.10.3
Media Parameter
Media parameters mainly include RTP start port, DTMF parameter, preferred Vocoder, etc.
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