MDA
MDA Spec Sheet 
The Multi-Function Digital Adapter (MDA) has been designed to be a functional replacement for the Dual
Trunk Adapter (DTA) and Dual Phone Adapter (DPA)1. This design provides a space efficient and low
cost replacement for the DTA/DPA that is ideal for mobile applications. Additionally, a new data
capability will be added that will allow secure data to be transported through the Raytheon SDS or DSS
switch by robbing the voice bandwidth. This data capability will utilize the existing security authentication
procedures (SALs), provided by the Raytheon switch, to provide an authenticated multi-level secure data
capability.
Another new capability provided by the MDA is the addition of a Simple Network Management Protocol
(SNMP) agent. This agent allows the target (MDA) to be configured/queried remotely by a SNMP
manager. The SNMP manager can query the MDA to determine near real-time failure and status
information that can provide valuable information to technicians that are diagnosing and correcting network
problems.
Features
Authenticated Multilevel
Security (MLS) data capability
Four-telephone UDLT network
interfaces
Near-real-time failure and
status information
DTA/DPA replacement
(backward compatible)
Front-panel keypad and LCD
Compatible with SDS and DSS
Easy connection to PC or hub
Simple Network Management
Protocol (SNMP) control
2 ethernet interfaces
Can be remoted up to 2
satellite hops
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Interfaces
• 100/10MB Ethernet
• 10MB Ethernet
• 4 UDLT Telephone Interfaces
• RS-232 T1/E1
• MIL-188-114 Interface/Spare
RS-422, RS-232
• Optical Fiber TX/RX Interface
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