Panasonic KX-TVS120 Installation Manual page 22

VOICE PROCESSING SYSTEM OVERVIEW
Optional Port Cards:
The following types of port cards can be installed in the VPS.
• Four digital port expansion cards (KX-TVS204)
• Two digital/analog port expansion cards (KX-TVS102)
SLOT 2 of the KX-TVS120 is not available for installing the KX-TVS204 card.
KX-TVS102 consists of the following 2 cards:
• Telephone line interface card
• Digital processor (DSP) card
The telephone line interface transmits and receives analog and digital signals to and from
the telephone line. The analog input signal is digitized at a sampling rate of 8 kHz to create
a 16-bit digital signal.
The DSP has the following features:
• Voice Compression and Decompression
• Touchtone Detection
• Touchtone Generation
• Call Progress Tone Detection
KX-TVS204 consists of a telephone line interface and a DSP. The telephone interface of the
KX-TVS204 transmits and receives ONLY digital signals with a Panasonic KX-TD or KX-
TA1232 Digital PBX. The DSP has the same features as the KX-TVS102.
Hard Disk Drive:
(One/system) Stores the proprietary system program, the system administration table, and the
voice prompts; has the recording area for the messages from callers. (The hard disk is
controlled by the central micro processor.)
Note: The actual Hard Disk Drive mounted on your VPS may look different from the one
shown in the corresponding illustration provided in the beginning of this section.
CPU Board:
(One/system) Main processing unit for the system. Comprised of central microprocessor,
ROM, dynamic RAM, system controller, DIP Switch (KX-TVS320) or Rotary Switch (KX-
TVS120 and KX-TVS220), and an RS-232C interface.
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