ISDN modem with V.24 interface

Connection of V.24 Devices using ISDN Dial-up Lines

  • Remote management connection or backup services over ISDN
  • Data rate: Up to 128 kbps
  • Interface: 1 x V.24/V.28 or 1 x V.24/V.28
  • Line: ISDN dial-up lines (ISDN S0)
  • Security by PAP/CHAP, password protection, call-back function (optional)
  • B-channel protocol: MLPPP and transparent HDLC
  • Available as compact standalone unit
  • Remote Management of Network Devices using ISDN Dial-up Lines

    The SPEED-ISDN MODEM enables conversion of a widely-used V.24 interface to an ISDN dial-up line. In addition the ISDN modem is perfectly suited for service providers, carriers or enterprises by realizing an ISDN backup or configuration connection to a remotely installed device to increase reliability.

  • Backup of DSL Connections via ISDN Dial-up Lines

    The device behaves like an analogue modem and does not request certain driver for connected devices. The SPEED-ISDN MODEM V.24 can be configured by a service center remote via ISDN. It is available as stand alone version.


  • LED indicators: Status Power, ISDN, L1, L2, Synch, B-channels, DCD, DTR, Rx, Tx (B1, B2)
  • Dimensions (H x W x D): 22 x 70 x 130 mm
  • Power supply: 230 V AC using external adapter

ISDN dial-up line port

  • ISDN interface: I.430 (ISDN BRI S0) acc. to standard CCITT I.430 (2B1D)
  • Data rate: Up to 128 kbps
  • Connector: RJ45
  • Dialing method: Hayes dialing
  • Optional: V.25bis asynchronous, X.3-PAD
  • B-channel protocols: V.110/ECMA102, V.120, X.75, HDLC transparent (PPP synchronous to asynchronous) and MLPPP
  • D-channel protocols: DSS1, X.31 (optional)

Client port

  • Interface: V.24/V.28 (DB9, female)
  • Data rate: 128 kbps asynchronous, half and full duplex


  • Password protection
  • User authentication: PAP/CHAP, MD5
  • Optional: Call-back function


  • Configuration: Local use asynchronous terminal/PC or remotely by ISDN

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