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STM-8/16/24 HS

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Tel: 410-583-1701     Email: Sales & Technical

 

Features
  • Multiplex statistically 8, 16 or 24 async channels onto a single sync link
  • Asynchronous channel data rates up to 19.2 kbps
  • Composite link data rate up to 64 kbps
  • Composite link interfaces: V.24/RS-232, V.35, X.21 and RS-530
  • Independent hard and soft flow control for each channel
  • Control signal passed end-to-end, bi-directional
  • Menu controlled configuration and diagnostics
  • Downloading of system parameters
  • Permanent storage for system parameters
  • Password secured access

 

Description
  • The STM high speed statistical multiplexers, integrate up to 24 asynchronous channels onto a single synchronous link. Three models are available:
    • STM - 8 with 8 asynchronous channels
    • STM - 16 with 16 asynchronous channels
    • STM - 24 with 24 asynchronous channels.
  • The channel data rates are from 75 bps up to 19.2 kbps. The synchronous composite link operates at up to 64 kbps and has four selectable interfaces:
    • V.24/RS-232
    • V.35
    • X.21
    • RS-530.
  • Powerful error detection and automatic retransmission ensures error free performance.
  • The STMs feature independent hard and soft flow control for each channel. End-to-end flow control can be initiated from DTE to DTE or from the STM channel to the remote DTE. Several characters for X-ON and X-OFF are provided, enabling compatibility with most applications.
  • Any sub-channel can be used as a command port to configure the entire system or to perform diagnostic tests. Password secured access prevents unauthorized alteration of the system configuration.
  • The STMs feature permanent storage of the user-programmed system configuration, using non-volatile memory and downloading of the configuration parameters.
  • Comprehensive diagnostic capabilities provide local and remote loopbacks on the sub-channels or on the composite channel, as well as testing of the modems between two STM units.
  • The STMs are designed for desktop or 19" rack installation. Sub-channel connections are made via RJ-45 connectors located on the front panel.
  • The STMs can be connected to RAD's APS and SPS packet switching products for expanding the number of async channels in PAD/FRAD applications