CHAPTER29 Analog Gateway
Mediant 1000 Gateway & E-SBC | User's Manual
2. From the 'FXS Coefficient Type' drop-down list (FXSCountryCoefficients), select the required
FXS Coefficient type.
3. From the 'FXO Coefficient Type' drop-down list (CountryCoefficients), select the required FXO
Coefficient type.
4. Click Apply, and then reset the device with a save-to-flash for your settings to take effect.
FXO Operating Modes
This section provides a description of the device's FXO operating modes:
■ For IP-to-Tel calls (see FXO Operations for IP-to-Tel Calls)
■ For Tel-to-IP calls (see FXO Operations for Tel-to-IP Calls)
■ Call termination on FXO devices (see Call Termination on FXO Devices)
FXO Operations for IP-to-Tel Calls
The FXO device provides the following operating modes for IP-to-Tel calls:
■ One-stage dialing (see One-Stage Dialing)
● Waiting for dial tone (see Two-Stage Dialing)
● Time to wait before dialing
● Answer supervision
■ Two-stage dialing (see Two-Stage Dialing)
■ Dialing time: DID wink (see DID Wink)
One-Stage Dialing
One-stage dialing is when the FXO device receives an IP-to-Tel call, off-hooks the PBX line
connected to the telephone, and then immediately dials the destination telephone number. In other
words, the IP caller doesn't dial the PSTN number upon hearing a dial tone.
One-stage dialing incorporates the following FXO functionality:
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