H3C Technologies H3C MSR 5600 - Manual (Page 21)

11
Setting the electrical impedance
The electrical impedance setting must be subject to country specifications. Each country corresponds to
an impedance value. You specify an impedance value while specifying a country.
To set the electrical impedance:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter FXO interface view. subscriber-line line-number N/A
3. Set the electrical impedance
of a country.
impedance { country-name | r550
| r600 | r650 | r700 | r750 |
r800 | r850 | r900 | r950 }
The default is the electrical
impedance of China.
You must configure the same
electrical impedance value on the
originating and terminating
devices.
Configuring the packet loss compensation mode
You can configure the packet loss compensation mode to alleviate the impact on voice quality:
• For discrete packet loss, you can use the general compensation mode to reconstruct lost packets.
• For continuous packet loss, you can use the voice gateway-specific compensation mode to
reconstruct lost packets.
To configure the packet loss compensation mode:
Step Command Remarks
1. Enter system view. System-view N/A
2. Enter FXO interface view. subscriber-line line-number N/A
3. Configure the packet loss
compensation mode for the
FXO interface.
plc-mode { general | specific }
By default, the voice
gateway-specific compensation
mode is used for an FXO interface.
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 function, 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 busy tones.
To bind an FXS interface to an FXO interface:
Step Command Remarks
1. Enter system view. system-view N/A