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Connecting to the Customer’s Network
October 2002
TN2501 Voice over the LAN (VAL)
The TN2501 Voice over the LAN (VAL) is an integrated announcement circuit pack that
• offers up to 1 hour of announcement storage capacity.
• requires shorter backup and restore times.
• is firmware downloadable.
• plays announcements over the TDM bus.
• has 33 ports, including
— 1 dedicated telephone port for recording and playing back announcements (port
number 1).
— 1 ethernet port (port number 33).
— 31 playback ports (ports 2–32).
• 10/100 Mb Ethernet interface, allowing announcement and firmware file portability over
your LAN (FTP server functions).
• supports *.wav announcement files.
Important File Specifications
Voice Announcement over LAN (VAL) requires that announcement files are in the following
*.wav formats:
• CCITT A-Law or CCITT µ-Law (mu-Law) companding format (do not use PCM)
• 8-kHz sample rate
• 8-bit resolution (bits per sample)
• Mono (channels = 1)
You must convert other wave (*.wav) file formats to those listed above. Telephone access
creates the correct file formats.
Caveats
Remember the following points when using the TN2501AP integrated announcement circuit
pack for the first time:
• Despite the feature name, announcements are not played over the LAN but can be
transferred to and from the TN2501AP circuit pack over the LAN.
• You cannot save or restore announcements to a TN2501AP circuit pack to or from
— a TN750C circuit pack
— flashcards
— tape
— magneto optical disks.
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