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|   16 Port Plus E1 Monitoring Groomer   |

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The VCL-MegaConnect, 16 Port Plus E1 Monitoring Groomer is suitable for non-intrusive monitoring of upto 8, "live" E1 traffic links, bi-directionally (i.e. in both transmit and receive directions through its 16 E1 receivers) through a high impedance (Hi-Z) path. Additionally, the equipment also provides 4 output E1 ports that shall connect the aggregated time-slots which have been non-intrusively "monitored" from the 8, "live" E1 traffic links to the user's protocol analyzers, test probes, etc.

The VCL-MegaConnect, 16 Port Plus E1 Monitoring Groomer, occupies only a 2U high rack-space, and is a compact 19-inch stand-alone unit. The unit is powered by and operates on a -48V DC power supply. An AC mains option is also available with an external AC-DC converter.

The equipment is provided with BOTH, RS232 Serial Interface for COM Port connection and as well as a TCP/IP LAN Interface (10BaseT) for providing equipment access through Telnet over a LAN/TCI/IP link. The user may select and use either of these ports for executing HyperTerminal text commands for configuration etc. The access for configuration and system management is provided through CLI (Command Line Interface) text commands which may be executed either from a serial (COM) Port of a PC or through the TCP/IP 10/100BaseT LAN Interface. The 10/100BaseT LAN Interface allows the equipment to be connected on a TCP/IP network for remote access for configuration and monitoring over LAN/TCP/IP link. The system is also supplied with an easy to use Windows (95, 98, Me, XP) Graphical User Interface that provides the user a complete control to prepare multiple configuration "maps" and store them as easy to read data files. Dry contact relay alarm output is also available at rear of the system to connect the system to an external audio/visual alarm output though a dry relay contact.

The Groomer is capable of non-intrusively monitoring upto 8 "live" E1 links and grooming the selected 64 Kbps time-slots to the 4 additional output E1 Ports provided in the equipment. The 16, E1 receivers of the Groomer shall connect to the 8, E1 "live traffic" links which are to be monitored, non-Intrusively. 4 additional (Normal-Z) output E1 Ports are also provided by the equipment which shall route the aggregated data of the "monitored" time-slots to the user’s test equipment, such as protocol analyzers, test probes, billing servers etc.

The Groomer (E1 Monitoring DACS) is capable of monitoring a -20dBdsx (0.3Volt Pulse) E1 signal through a Hi-Z path, without in any way affecting or disturbing the "live" E1 traffic that is required to be monitored.

The equipment offers the user with complete flexibility to choose and select time-slots from each of the 8 E1 links that are being monitored, without limitation or restrictions, through the internal TSI non-blocking switch (data received by the equipment's 16 E1 receivers) and then aggregate the selected time-slots to the 4 output E1 ports that shall connect to the test probes etc.

The additional solutions are offered and available for Hi-z non-intrusive live traffic monitoring applications are:

Application Diagram


  • 16 E1 (or T1) ports
  • Stratum 3 clock
  • Economical
  • Compact
  • Monitoring and Grooming applications
  • Available with TCP / IP access facility for remote monitoring & access


  • 8 E1 Links (16 E1 Ports plus 4 E1 ports for connecting to monitoring equipment) E1 monitoring groomer
  • Monitoring of “Live Traffic” on E1 links which are to be monitored, non-intrusively (Hi-Z) in both transmit and receive directions.

Indications and Alarm Monitoring

  • Loss of incoming signal at any E1 Port
  • Configuration Error Alarm
  • Clock Status
  • 1 to 8 channel LED indicators to indicate the status of each E1 channel
  • +3 Volts Power Supply
  • -48V DC present
  • Configuration Error

Programmable Features

  • Specifying the priority sequence for clock selection
  • Enabling or disabling E1 channels (masking) of the E1 channels that are not is use
  • Creating a cross - connect between E1s (and T1) at DS-O level (single time-slot level) using the Windows based, easy to use GUI
  • Telnet interface for remote programming.

Status Monitoring

  • Clock Selection
  • Status of alarms
  • Enabled / Disabled status of E1 channels
  • Monitoring of the VCL-MegaConnect status and configuration.

Technical Specifications

Monitoring E1 Ports (shall connect to the E1 links that are to be Monitored) -
Monitored Port (MP)

Line Rate E1 (2.048 Mbps ± 50 bps)
Connector RJ-45 (Female)
Impedance Hi-Z for Non-Intrusive Monitoring
Compliance G.703
Available Time-Slots 1-31
Jitter G.823
Framing G.704
Compliance (for Hi-Z Monitoring) G.772
Receive Signal Sensitivity Upto -20dBdsx (0.3 Volt Pulse)
Number of E1 Receivers to connect to the Monitored Links 16 E1 Receivers. Capable of non-intrusively monitoring upto 8 E1 links bi-directionally.

Test E1 Port (shall connect to the Test Equipment) - Test Port (TP)

Line Rate E1 (2.048 Mbps ± 50 bps)
Connector RJ-45 (Female)
Impedance 120 Ohms
Available Time-Slots 1-31
Jitter G.823
Pulse Shape Compliance G.703
Signal Pulse 3.0 Volt - as per G.703
Framing G.704
Number of E1 Ports 4

Power Supply

Power Supply -48V DC (-40V DC to -60V DC)
Power Consumption 6 watts

Time-slot selection/Grooming

  • Any MP to Any TP through an internal, best byte, non-blocking TSI Switch.




AT&T TR62411, Telcordia GR-1244-CORE
Stratum 3, Stratum 4, Enhanced and Stratum 4, ETSI ETS 300 011, ITU-T G.813 Option 1
75 Ohms - 2.048 MHz

Management and Control

  • Serial Management Port (RS232) - COM Port
  • 10/100 BaseT for Remote Management over a LAN
  • 10/100 BaseT Telnet over a TCP-IP Network.

Command Language

  • Command Line Interface (English text commands)
  • Windows based GUI (optional).


  • 2U High
  • 19-inch rack-mounting shelf.

Mechanical Specifications

Rack mounting Standard 19-Inch. DIN Rack
Height 90.00 mm.
Depth 260.00 mm.
Width 477.00 mm
Weight 4.00 kg

Others Links:

  STM SDH Multiplexers
  E1 VoIP-GSM Gateways
  VoIP SS7 and C7 Solution
  Echo Cancellers and VQE Solutions
  GSM Gateways / GSM Channel Banks
  E1 and T1 over Ethernet (TDM over IP)
  Groomers (Hi-Z Non-Intrusive Monitoring)
  Digital Access Cross Connect Switch (DACS)
  E1, T1, E3, DS3, Ethernet Converter (IP over TDM)

Technical specifications are subject to change without notice.
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