Binding an FXS interface to an FXO interface
The one-to-one binding between FXS and FXO interfaces enhances the reliability of voice communication. By working with the PLAR feature, this feature enables the telephone connected to the FXS interface to exclusively use the bound FXO interface to place and receive calls.
The on-hook/off-hook state of the bound FXS and FXO interfaces is consistent. If the FXS interface receives a call when the bound FXS interface goes off-hook, the calling party will hear a busy tone.
To bind an FXS interface to an FXO interface:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter FXO interface view. | subscriber-line line-number | N/A |
3. Bind an FXS interface to the FXO interface. | hookoff-mode delay bind fxs-subscriber [ ring-immediately ] | By default, no FXS interface is bound to an FXO interface. |
4. Enable the PLAR feature. | private-line string | By default, the PLAR feature is disabled. For more information about this command, see Voice Command Reference. |
5. Set the interval between on-hook and off-hook. | timer hookoff-interval milliseconds | The default is 500 milliseconds. |