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

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• Immediate mode—The calling party dials the number of the trunk. Upon receiving the call, the FXO
goes off-hook and sends a dial tone to the calling party. Then, the calling party dials the destination
number.
• Delay mode—The number of the private line is configured in subscriber line view on the system.
When the calling party dials the destination number, the call is routed to its destination based on
the configured private line number. When the called party picks up the phone, the FXO goes
off-hook for the conversation.
To configure the off-hook mode:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter FXO voice subscriber
line.
subscriber-line line-number N/A
3. Configure the off-hook mode.
hookoff-mode { delay |
immediate }
Optional.
Immediate mode by default.
Setting ring detection parameters
PBXs from different vendors might use different types of ring signals. By setting ring detection parameters,
you can detect ring signals of different frequencies and waveforms.
To configure ring detection parameters:
Ste
p
Command Remarks
1. Enter system view.
system-view
N/A
2. Enter FXO voice subscriber
line.
subscriber-line line-number N/A
3. Set the debounce time of ring
detection on the FXO voice
subscriber line.
ring-detect debounce value
Optional.
10 milliseconds by default.
• Do not set the debounce time
during a conversation.
• Do not set the debounce time
too short or false ring tone
recognition might occur under
power line interference.
• If you configure this command
on a FXO voice subscriber line
of a board, the configuration is
effective on all FXO subscriber
lines on this board.
4. Set the frequency value in the
ring detection.
ring-detect frequency value
Optional.
40 Hz by default.