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600 Ohm Analog and Dry Contact-over-IP Gateway


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This Analog & Dry Contact IP Gateway links or extends up to 4 channels of 600Ω 2/4 wire analog and dry contacts across Layer 2/3 Ethernet networks.

Learn more about Enhanced Audio with Analog Radio Over IP

The JumboSwitch® series is a TDM over IP/Ethernet based solution designed to emulate time-division multiplexing over packet switched networks (PSN). TDM over IP/Ethernet is a TDM pseudowire (PW) technology making it possible to provision E1, T1, E3, T3, STS-1 and serial data services across PSN's such as IP, MPLS or layer 2 Ethernet Networks.

For assistance with this product or to request a user manual please contact Technical Support.


  • Enhanced Audio with Analog Radio Over IP
  • 1-4 Scalable Channels of Analog/Dry Contact over IP
  • 1 & 2 Ch. Units Field Expandable to 2 or 4 Channels
  • 64Kbps/Channel (No Compression)
  • Extremely Low Latency
  • Temperature & Power Consumption Monitoring
  • Extreme Temp (-40°C to +80ºC) Optional
  • Meets or Exceeds IEC 61850-3, IEEE 1613 & NEMA TS-2 Standards
  • Member of JumboSwitch Product Family

"Over the past thirty-five years I have used similar boxes from other vendors for similar applications. But I have never seen one that would produce such a linear, uniform audio transmission from one end to the other - especially across an IP link.”
- Martin T. Vinson, N.C.T., A.S.C.E.T.


Typical applications include linking or extending various 600Ω analog, audio and intercom devices, (e.g. Frequency Shift Keying [FSK] modems), E&M, teleprotection relay controllers, and dry contacts over Layer 2/3 IP networks.

It is also used to improve voice quality and increase system reliability in harsh environments, to replace unreliable leased phone circuits and to stabilize voice level settings for 600Ω audio channels.

Analog and Dry Contact to IP Application Using Raytheon SNV-12 and Motorola Radio
Analog and Dry Contact to IP Application Using SNV-12 and Motorola
Analog & Dry Contact over IP with voter/comparator
Using TC3846-6 with voter/comparator
600Ω Analog over IP in remote paging application
Using TC3846-6 in a remote paging application
TC3846-6 - Analog and Dry Contact IP Gateway
Click to enlarge


Connection Capacity
  1. 600Ω (2/4 Wire)1, 2, or 4 Ports
  2. Dry Contact1, 2, or 4 Ports
  3. Ethernet1 Port
  1. Dry Contact Interface
  2. Normal openStandard
  3. Normal closeOptional
  4. Load Voltage (peak AC)60V
  5. Load Voltage (DC)60V
  6. Continuous load current0.55A
  7. Peak load current1.2A
  8. Max On Resistance2.5 Ω
  9. Output Capacitance150pF
  10. Detector Max input voltage9V
  11. 600Ω Analog Interface
  12. Impedance600Ω
  13. Max Input3Vp-p
  14. Frequency band300 to 3400Hz
  15. Ethernet Interface
  16. StandardsIEEE 802.3, 802.3u, 802.1p&Q
  17. ConnectorRJ45
  18. Console PortRJ45
Regulatory Approval
  1. CE, FCC Part 15, CISPR (EN55022) CLASS A, IEC 61850-3, IEEE 1613, NEMA TS-2
  1. Bit Error Rate1 in 1010 or Better
Diagnostic Functions
  1. Local and Remote Loopback for Analog and Ethernet
  1. Unit StatusPWR (A, B), Alarm, Vcc, CS, MS
  2. ChannelStatus
  3. EthernetLink/Act
  1. Standard12VDC
  2. Optional24VDC, -48VDC or 125VDC (1U/ 2U/ 4U only), 90-260 VAC, 50/60Hz
  3. Power Consumption< 10W
Operating Temperature
  1. Hi-Temp-20°C to 70°C
  2. Extreme Temp-40°C to 80°C
  1. Temperature-40°C to 90°C
  2. Humidity95% non-condensing
Physical (4-Channel Standalone)
  1. Height(3.15 cm) 1.24"
  2. Width(17.78 cm) 7.0"
  3. Depth(22.86 cm) 9.0"
  4. Weight(0.3 kg) 0.75 lbs


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