Specifications

October, ‘03 Comdial 11
DX-80 Installation & Maintenance
1. OVERVIEW
The Comdial DX-80 is a fully digital hybrid key telephone system. The DX-80 uses “loop start”
central office (telephone company) line interfaces, and a mix of analog and digital extension ports to
provide office communications and connectivity to the Public Switched Telephone Network (PSTN).
The DX-80 delivers a vast array of office productivity features and telephone use enhancing features,
including Caller Identification (requires telephone company subscription), in the standard package.
Unlike most systems that support Caller ID, the DX-80 supports Caller ID to DX-80 proprietary digital
extensions and to third-party, Caller ID capable analog devices (cordless telephones, etc.)
Although most features are standard, the DX-80 provides for several optional features to further
enhance office communications. Built-in voice processing integration packages include:
• Automated Attendant,
• Four port, Flash-based Voice Mail/Auto Attendant (expandable to 8 ports), and
• Four port, Hard drive-based Voice Mail/Auto Attendant (expandable to 8 ports).
The DX-80 platform allows you to use these voice processing platforms without losing valuable
system port resources.
The DX-80 is comprised of an application configured, expandable Key Service Unit (KSU) platform.
There is one fully-featured Digital Executive Telephone (DET) that delivers access to all system func
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tions. The system architecture provides an expandable interface for digital port growth and analog port
growth. The basic configuration supports both device types. (Analog ports might be used for plain old
telephones, fax machines, modems, etc.) The DX-80 is designed to meet the telecommunications
needs of small-to-medium business offices.
1.1 System Technology
The DX-80 incorporates state-of-the-art digital technology for voice switching and call processing,
using Pulse Code Modulation and Time Division Multiplexing (PCM/TDM). The DX-80 is a non-
blocking switch, with no loss or degradation of voice signals. The system is stored-program control
and uses a 16-bit, 20 MHz main microprocessor and peripheral devices (extensions and CO lines) in a
distributed processing configuration. Memory consists of 640K bytes of ROM (Read Only Memory)
and 384K bytes of RAM (Random Access Memory). The RAM is lithium battery protected.
The following table shows the available DX-80 equipment.