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|   VCL-CB-BR - E1 Channel Banks with Answer Supervision    |

|   PRODUCTS   |

Comarra E1 Channel Bank - the VCL-CB-BR provides answer supervision / battery reversal / polarity reversal support. Available with FXO, FXS and 2W/4W E&M interfaces. It used in applications to deliver voice over an end-to-end E1 (radio / fiber / HDSL) links. VCL-CB, E1 Channel Bank - Product Photo

The interface to the analog PSTN (POTS*) lines have been ruggedized to provide complete protection against line card failures which occur from induced voltages from AC power lines and lightening strikes and difficult field conditions.

The VCL-CB-BR™ E1 Channel bank offers all types of analog interfaces including FXO, FXS and 2W/4W E&M interfaces, that may be required to deliver voice over an end-to-end E1 (radio / fiber / HDSL) links.

Comarra also introduces its intelligent E1 Channel Bank, VCL-CB-BR™ with compatibility to fixed wireless cellular terminals / GSM fixed wireless terminals / Telular fixed wireless cellular terminals with voice activity detection (VAD) activated "answer supervision" and "disconnect supervision" to connect VoIP (Voice over IP), Voice over Frame Relay and Voice over ATM servers to GSM fixed wireless networks.

Comarra E1 channel bank is especially designed for VoIP (Voice over IP), Voice over Frame Relay and Voice over ATM, call-termination and long distance communications markets and operators who wish to terminate their long-distance traffic directly to the GSM fixed wireless terminals. The channel bank solution provides a cost-effective platform to connect to upto 30, GSM fixed wireless terminals to a digital E1 interface of VoIP (Voice over IP), Voice over Frame Relay and Voice over ATM Gateways.

E1 channel bank provides answer supervision feature when the called party answers, upon receiving an actual battery reversal of the PSTN analog line. Both, the line connect and disconnect functions are provided using the actual battery reversal function of the PSTN analog line (e.g. much like your coin pay-phones).

Features and Highlights

  • Ruggedized equipment design.
  • Provide complete protection against the line card failures occurring from induced voltages from AC power lines and lightening strikes and other difficult field conditions.
  • VF (Voice Frequency) specifications are in accordance with G.712, ITU-T recommendations to provide clear voice.
  • Ideal choice for long distance call / traffic termination operators, corporate and ISP customers, who wish to connect their fully digital networks to the PSTN, through the available analog dial-up PTT lines.
  • Available with an E1, 2Mbps interface or a fractional E1 interface (to even start service with less than 10 lines).
  • Ideal for long distance traffic termination.
  • Also used in conventional applications to deliver voice over an end-to-end E1 (radio / fiber / HDSL) links.
  • Available with FXO, FXS and 2W/4W E&M customer interfaces.
  • Compliance to all the relevant ITU-T recommendations.
  • Modular, 3U high, compact construction provides easy maintenance.
  • Plug & Play - easy to install equipment.
  • Extensive set of alarms
  • Available with easy to use Windows™ based Graphical User Interface.
  • Synchronization to different user selectable clock sources.
  • Remote Access through TCP/IP (for remote configuration and monitoring - available as an optional extra).
Core System Composition: (Common Equipment) Part No. #
19-Inch Chassis with connectorized backpanel VCL-CB-000/005
-48VDC Power Supply Card                     VCL-CB-010
Control Card, E1 Interface Card VCL-CB-015-BR
Ring Generator - Optional*
* Required only with FXS Interface Card
VCL-CB-040
User Interface Cards
FXO (Central Office Interface Card) VCL-CB-030-BR
FXS (Remote / Subscriber Interface Card) VCL-CB-025
E&M (2 Wire / 4 Wire Interface Card) VCL-CB-035

Notes

FXO interface cards - connect to the analog PSTN (telco) lines.
FXS interface cards - connect to analog telephone sets.
E&M interface cards - connect to E&M switches / interfaces.

Others Links:

  Multiplexers
  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)
  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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