English French German Spanish
Wan Raptor Network Emulator
RDS-Plus, Data Link Simulator
PDS-1/10G Portable Delay Simulator

Network Emulator Testing
10 / 100 / 1000, 10G, 25G & 40G

RDS-PLUS, Data Link Simulator

RDS-Plus, Data Link Simulator
Latency Emulator & BERT
Testing for Serial Data and Telcon Interfaces


Network Impairment testing
Latency, Loss, Jitter & Re-Ordering

previous arrowprevious arrow
next arrownext arrow
Products for Global Networks
Manufacturing Network latency Emulators, IP Traffic
Generators and Data Communication Equipment since 1994.

About East Coast Datacom, Inc

East Coast Datacom, Inc. is a customer oriented, high technology enterprise which was formed in 1994 to design, manufacture and support Wide Area Network Equipment. We manufacture the broadest line of Network Emulators in the network test equipment market supporting over 18 different interfaces for Serial, Telco and Ethernet.

For Ethernet, the WanRaptor™ Network Emulator allows users to test and stage critical network equipment adding network latency, loss, Jitter and re-ordering impairments. For Serial data and Telco the RDS-PLUS delay simulator is a modular, network link error and delay emulator that provides a realistic simulation of physical network behavior with respect to time delays and bit errors.

We also manufacture an extensive line of legacy network equipment critical to the military, government and Fortune 500 companies. These include data broadcast splitters, digital sharing devices, interface converters and many other network adapters. Our highly respected Sync2IP Converter is a unique solution for Sync data to IP conversion as we support any sync data protocol.

We hope you enjoy our collection of products we present on our web site. Keep in mind we can modify or design a new solution for your unique application.

Our Featured Products

Select a category you are interested in and explore what we have to offer you. We manufacture a full line of data communication equipment and network latency simulators.

Network Emulators

Application Performance Testing
Network Latency Simulators

Serial Network Adapters

Converts Sync Serial Data to IP Transport
Serial Network Adapters

Data Broadcast Units

Simplex Data Broadcast for RS-232 or V.11
Data Broadcast Units

A-B Switch

2-Ports with Dry Contacts
For RS-232

Supports RS-232
** UL 60950 & UL 62368 Approved


Features / Benefits

  • Economical Secure A/B Switch, No Volatile Memory Parts Utilized
  • Allows Remote A/B Switching
  • Supports Common Input and Port A or Port B Switching
  • Dry Contact Relay Switching
  • Three DB-9 Connectors – Compact Design
  • Supports 4-Wires and Ground for RS-232
  • All wires & Power are Surge Protected
  • Loss of Power Default Switch to Port A
  • Status LED’s Port A or Port B Active
  • Reliable 5V DC Power Supply is UL, cUL and PSE Approved, RoHS
  • Compact Sturdy Aluminum Enclosure


The A/B Switch allows secure and safe switching between RS-232 or any ITU V.24 data ports. The unit supports switching 4-wires of user data traffic from the common port to Ports A or Port B. All switching is accomplished with dry contact positive latching relays for years of dependable service. In the event of local power failure, the A/B Switch will default to Port A.

The switching between Port A to Port B are accomplished with a remote device that applies a positive or negative voltage to the A/B Switch via the RS-232 RJ45 port.

The front panel has three status LED’s that present the user with Port A or Port B active status. A power LED is also present to indicate that the A/B Switch has power applied.

The A/B Switch is housed in a sturdy metal enclosure and operates on a simple reliable 5V DC power supply.

The A/B Switch has a 3-year warranty and a 24-hour turnaround on warranty repairs..


Application Allows a user to connect to a Single Common Input Port and Remotely Switch between two Output A and B Ports with local visual port indicators.
Capacity Three Ports Common Port A and Port B
Data Interface 4-Wire & Ground Interface supports RS-232 or any ITU V.24 compliant balanced interface
Data Format Data Transparent at all Data Rates
Data Rates Up to 19.2Kbps
Indicators Power, Port A and Port B
Surge Protection Main power supply and all Data Ports
Power Source - MTBF External Wall Mount AC to DC Supply, Input Voltage 90-240VAC. Output Voltage is 5VDC with 300,000 Hour MTBF

EMI Approvals

FCC 47CFR, Part 15, Subpart B for conducted emissions from a Class A
FCC 47CFR, Part 15, Subpart B for radiated emissions from a Class A

Safety Approvals

UL 60950, UL 62368

Electric Discharge

IIEC EN-61000-4-2


Operating Temperature: 32º to 104º F (0º to 40º C) Operational Altitude: 0 to 6,600 feet
Operational Relative Humidity: 30º C at 93%
Non-Operational Temperature: -30 degC to 56 degC Non-Operational Altitude: 0 to 50,000 feet above sea level

Dimensions Height ....... 1.75 inches (4.445 cm) Width ........ 5.75 inches (14.605 cm) Length ....... 5.54 inches (14.072 cm)
Weight 1 Pound (0.045Kg)
Warranty Three Years, Return To Factory
Ordering Information Main Unit Part Number: 273000
Model: A/B Switch RS-232
Description: 2-Port A/B Switch with Common
Included with each unit: 1) Operations Manual
2) PT# 711019: AC to DC Power Supply N America For further detailed technical information on this prod- uct, contact East Coast Datacom Technical Assistance toll free at (321) 637-9922