VT-MODEM-5 56K DC power
Modem with Security

Industrial Telephone Modems eliminate the difficulties encountered with installing office-grade modems in industrial settings. These rugged modems connect to any PLC, RTU or other industrial equipment and provide the important features you have been looking for.

  • Supports speeds up to 56K
  • Can be configured through the phone line from a distant location
  • Callback security prevents unauthorized access
  • Rated for -30° to +70°C operation
  • Tough enough for Class I, Div. 2 (Zone 2) hazardous locations
  • DIN Rail or flat panel mounting
  • DC powered - No more bulky AC adapters
  • Five year guaranteed availability for OEMs


Why an Industrial Modem - Industrial grade modems are designed for industrial environments. Their rugged packaging and protected circuitry keep them working under conditions that may cause cheap office-grade modems to fail. Industrial applications are demanding - it gets hot, it gets cold - the power browns out or spikes wildly - and you need a reliable industrial modem that can keep on going.

The Callback Remote Security feature allows you to password-protect a remote (answering) VT-MODEM-5 to restrict call-in access. The remote VT-MODEM-5 will only establish a connection with a local (dialing) modem after the password has been received from the local site. Refer to the VT-MODEM-5 Callback Security topic for more information on this feature.

This security feature can be enabled by clicking the Enable Remote Callback Security button.

VT-MODEM-5 Specifications

Telephone Line:

Max. Data Rate 56K bps (V.90 and V.92)
Compatibility V.92, V.90, V.34 enhanced, V.34, V.32bis, V.32, V.22bis, V.22A/B, V.23, V.21, Bell212A & 103
Data compression V.42 bis (4:1) and MNP 5 (2:1)
Error correction V.42 LAPM and MNP 3-4
Maximum fax rate 33.6 Kbps
Fax compatibility ITU-T “Super” Group 3; Class 1.0, 2.0, 2.1; Group 3, Class 1 and 2, T.4, T.30, V.21, V.27ter, V.29, V.34, V.17, and TIA/EIA TR29.2
Callback security Yes
Remote configuration Yes
Ringer Equivalent 0.3
Line Jack RJ11
Phone Jack RJ11

RS232 Port:

Max RS232 Rate 115.2 kbps
RS232 Signal Support TXD, RXD, CTS, RTS, DCD, DTR, DSR, RI, GND
RS232 Connector DB9 female
Command Set All standard AT and S register commands, including Class 1 and Class 2 Fax commands

General Characteristics:

Dimensions 3.23W x 4.75L x 1.35H inches (8.2W x 12.1L x 3.4H cm)
Input Power 10-30 VDC
Input Current (normal mode) 75 mA @ 24 VDC (typical)
Input Current (low power mode) 52 mA @ 24 VDC (typical)
Operating Temperature -30° to 70° C
Storage Temperature -40° to 85° C
Humidity 5% to 95% RH (non-condensing)
Flammability (module plastic) UL 94V-0 materials
Telecom FCC part 68 (Reg. #5KNUSA-32535-MM-E), Industry Canada (Cert. #29918926A), Contact SIXNET for other countries
Electrical Safety UL 508, CSA C22.2/14; EN61010-1 (IEC1010),CE
EMI Emissions FCC part 15, ICES-003, Class A; EN55022, CE
EMC immunity EN50082-1 (IEC801-2, 3, 4), CE
Vibration IEC68-2-6
Hazardous locations UL 1604, CSA C22.2/213-M1987, (Class I, Div 2, Groups A, B, C, D), EN50021 (zone 2)
Marine/offshore locations Det Norske Veritas (DNV) No. 2.4 (Class A and B)

see other Sixnet VT-modem pages


301-924-7400 EXT 25

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