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The following illustration shows the rear panel interfaces on the 24 Port I/O for the IMG 2020:

 

Connector

Description

CTRL 0, CTRL 1

  • Redundant 10/100/1000BaseT Ethernet connectors providing secure communication with an external host or device.
  • Auto-negotiating, full-duplex connectors that support MDIX (cable crossover), eliminating the need for crossover cables for point-to-point communications.
  • Base MAC is always assigned to the CTRL interfaces. The IP address assigned to this interface through dhcp or bootup.cfg will be used for OAMP support.
  • Can be utilized for RTP Traffic and IP Signaling if required. IP addresses must not conflict with the IP address set up through dhcp.conf or bootp.cfg files.

AUX 0, AUX 1

Reserved for future use.

DATA A0, DATA A1 DATA B0, DATA B1

  • Redundant 10/100/1000BaseT Ethernet connectors providing an interface to the internal Ethernet switch.
  • Used to communicate to all IMG 2020 devices that communicate over the public network.
  • Up to 2016 VoIP channels available.
  • Auto-negotiating, full-duplex connectors that support MDIX (cable crossover), eliminating the need for crossover cables for point-to-point communications.
  • Interface DATA A is reserved for both RTP traffic and IP signaling.
  • Interface DATA B is reserved for both RTP traffic and IP signaling.

T1/E1

  • (24) T1/E1 DS-1's. (RJ48 Connectors)
  • Up to 768 E1 TDM DS-0's available.
  • Up to 576 T1 TDM DS-0's available.

Redundancy (1+1 T1/E1 redundancy)

Reserved for future use.

Ethernet LEDs

RJ-48 Ethernet connectors containing one Ethernet status LED:

  • Green/blinking green - 1000Base-T link present/1000Base-T activity
  • Orange/blinking orange - 100Base-T link present/100Base-T activity

Power supply LEDs

Indicate the power supply status:

  • Off = No power to both power supply units.
  • Flashing red with audible alarm = No power to one of the redundant supplies
  • Green = AC present. Only standby output on.
  • Blue = DC power supply on and OK.
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