R2511-HP MSR Router Series Voice Configuration Guide(V5)

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Configuring other functions
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter FXO voice subscriber
line view.
subscriber-line line-number N/A
3. Set the electrical impedance.
impedance { country-name | r550
| r600 | r650 | r700 | r750 |
r800 | r850 | r900 | r950 }
Optional.
By default, the electrical
impedance conforms to Chinese
standards.
4. Configure the packet loss
compensation mode.
plc-mode { general | specific }
Optional.
The default is specific.
Binding an FXS voice subscriber line to an FXO
voice subscriber line
The one-to-one binding between FXS voice subscriber lines and FXO voice subscriber lines enhances the
reliability of voice communication, which is particularly important for some industries. After the binding,
FXO voice subscriber lines can be used for communication over PSTN when the IP network is
unavailable.
The one-to-one binding between FXS voice subscriber lines and FXO voice subscriber lines provides the
following functions:
• Dedicated FXO voice subscriber lines—The FXO voice subscriber lines are used only for the bound
FXS voice subscriber lines and PSTN-originated calls received over the FXO voice subscriber lines
are directly connected to the bound FXS voice subscriber lines.
• Consistent state between bound FXS and FXO voice subscriber lines—The on-hook/off-hook state
of the bound FXS and FXO voice subscriber lines is consistent. If an FXS voice subscriber line
receives a PSTN-originated call when the corresponding FXS voice subscriber line goes off-hook,
the calling party will hear busy tones.
Configuration prerequisites
The router is equipped with FXO and FXS interface cards. The basic functions of FXO and FXS voice
subscriber lines are configured.
Configuration procedure
To bind one FXS voice subscriber line to one FXO voice subscriber line:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter FXO voice subscriber
line view.
subscriber-line line-number N/A