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    TC3848-3 and -4
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TC3848-3 and -4

2 Ch. or 4 Ch. FXS or FXO over Ethernet

TC3848-3 and -4
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This Modem Over IP is compatible with CCITT and Bell data modem standards. It is easy to configure and offers extremely low latency.

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.

  • FXS (TC3848-3) or FXO (TC3848-4)
  • Extends 2 or 4 Ch. 2-Wire Telephone/Dial-up Links
  • 64 Kbps DS0 Channel (No Compression)
  • Extremely Low Latency
  • VLAN & QoS Support
  • Built-In Temperature & Power Sensors
  • Extreme Temp (-40°C to +80ºC) Optional
  • Meets or Exceeds IEC 61850-3, IEEE 1613 & NEMA TS-2 Standards
  • Member of JumboSwitch® Product Family


The TC3848-3/4 MoIP Gateway is used to link analog telephones or legacy dial-up devices including data modems, fax machines, meters, ATM machines and Credit Card machines over Ethernet/IP or MPLS networks.

It can also be a critical connectivity product for completing migration from a legacy network to a fully integrated voice and data over Ethernet/IP network.

Typical applications include:

  • Connecting a TC3848-3 FXS interface to a 2-wire analog phone station and a TC3848-4 FXO interface to PSTN for outside telephone service.
  • Connecting a TC3848-3 FXS interface to a dial-up meter in the field and a TC3848-4 to a PBX to enable a PC with a built-in dial-up modem to collect information and communicate with a central office.
  • Connecting ATM or Credit Card Machines to a central processing center.
  • Extend Analog Phones or Legacy Dial-up Devices over Ethernet / IP Networks.
TC3848-3 and -4 - Modem Over IP
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  1. FXS/FXO Interface
  2. Impedance600Ω
  3. Frequency Band300Hz to 3400Hz
  4. ConnectorRJ11
  5. Ethernet Interface
  6. StandardsIEEE 802.3, 802.3u, 802.1p&Q
  7. ConnectorRJ45
  8. Console Interface
  9. Connector2.5mm Audio Jack
SLIC Characteristics
  1. Maximum Ringer Load (REN)3
  2. Ringer Voltage50Vrms
  3. Distance4,000 feet (1.2192 km)
  1. Web, SNMP, Serial Console, and Telnet
Regulatory Approval
  1. CE, FCC Part 15, CISPR (EN55022) CLASS A, IEC 61850-3, IEEE 1613, NEMA TS-2
  1. Unit Status PWR (A, B), Alarm, BU, PL, Vcc, BP, MGM
  2. ChannelRing, Hook
  3. EthernetLink, Duplex
  1. Standard12VDC
  2. Optional24VDC, -48VDC or 125VDC (1U/ 2U/ 4U only), 90-260 VAC, 50/60Hz
  3. Power Consumption< 10W
Operating Temperature
  1. Standard 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 (rack mount card)
  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
Ordering Information
  1. TC3848-3-22 Ch. FXS
  2. TC3848-3-44 Ch. FXS
  3. TC3848-4-22 Ch. FXO
  4. TC3848-4-44 Ch. FXO
*Contact factory for higher requirements


For more information

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