Console Structure

  • Console access via ssh
  • Console access via usb-serial
  • Shell Commands via WebUI – Command Execution
  • Gateway CLI Commands via WebUI – Command Execution
  • Operating system is Linux based. Therefore Linux expertise is mandatory.

Connect via SSH

Use default SSH clients on any desktop

  • Windows – putty
  • Linux – native ssh

On login prompt

  • Username: root
  • Password: < your custom password >

Connect via USB Serial

  • usb to serial cable
    • One must use usb to serial cable + null modem cable
    • If Laptop does not have a serial port then use two usb to serial cables plus null modem cable per diagram below.
  • Connect to any usb port on SBC appliance
    • All SBC appliances have usb port on rear panel
    • 2U SBC appliances have usb port in front panel as well.
  • Configure Terminal Client on Laptop
    • Windows HyperTerminal
    • Linux – mincomm
  • Serial Settings
    • 115200, N, 8, 1 vt100
  • Press enter a few times until a login prompt appears.
    • Login via: username: root, password:

Bash Shell

Once successfully logged into the system, either via ssh or usb serial, user will be offered a bash prompt.

  • SBC system is based on Linux
  • The initial console after login will be a bash shell

System Commands

System commands are based on Linux operating systems.
Listed here are some most useful debugging commands.

  • tcpdump
    • Provides network capture to a pcap file
    • Can be analyzed using wireshark on Desktop or Laptop.
  • ethtool
    • Provides detail network interface information, like Ethernet link status.
    • Run: ethtool for all the options
    • Eg: ethtool eth0 – show Ethernet status
  • Ifconfig
    • Network interface statistics tool
    • Shows error counters on Ethernet and TDM interfaces.
    • Notice the error and overrun counters on wanpipe w1g1 interfaces.
  • nsc_cli
  • Provides SBC CLI

Refer to the appendix for all System Commands

SBC CLI – nsc_cli

  • First log into the System Console (bash)
  • Once on bash prompt run
    • nsc_cli

Command Description

status Shows SBC Status
show channels List all active calls
log [debug, error, crit] Set log level to debug loglevel critical

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