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

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Configuring analog voice subscriber lines
This chapter covers the configuration of analog FXS, FXO, and E&M voice subscriber lines.
The HP MSR900 and MSR93X routers do not support voice functions.
Signal tone
Call progress tones (CPTone), also called signal tones, are generally composed of several discrete
single-frequency tones that are played repeatedly on a make-break ratio basis. Signal tones, including
dial tone, ringback tone, and busy tone, are used to inform users of the call progress. Signal tones vary
greatly with countries as per their national standards.
Signal tones support two modes: country mode and custom mode. In addition, the amplitude of signal
tones can be customized to avoid signal tone detection failure.
FXS voice subscriber line
FXS interface
A foreign exchange station (FXS) interface uses a standard RJ-11 connector and a telephone cable to
directly connect to an ordinary telephone or a fax machine. An FXS interface accomplishes signaling
exchange based on the level changes on the Tip/Ring line and provides ring, voltage, and dial tone.
CID
Calling identity delivery (CID) enables called terminals to display the calling identity information,
including the calling number, calling name, date, and time.
With the CID function, calling numbers and calling time in single-data-message format are transmitted or
received in an on-hook state. When the CID function is combined with services such as call
forwarding—unconditional (CFU) and call forwarding—busy (CFB), calling identity information can
also be transmitted if required. A message in the single-data-message format contains the following
information:
• Date and time when the voice call occurs (MM DD hh:mm)
• Calling number if CID is enabled on the device
• P if CID is disabled on the device
• O if the terminating PBX fails to obtain the calling number (for example, the originating PBX end
does not send it)
A message in the multiple-data-message format contains the following information:
• Date and time when the voice call occurs (MM DD hh:mm)
• Calling number and calling name if CID is enabled on the device
• Two Ps for the calling number and the calling name if CID is disabled on the device
• O if the terminating PBX fails to obtain the calling number (for example, the originating PBX end
does not send it)