• Mutiplexers

16 E1 with Gigabit Ethernet (Wire Speed) Optical Multiplexer

Orion Telecom Offers Power Utility Solutions Oil & Gas Networks Solutions Railway & Metro Rail Solutions PTP IEEE-1588v2 GPS Primary Reference Clock Packet Optical Transport Multiplexers Teleprotection SCADA, FOTE, OLTE Digital Cross Connects Echo Cancellers IP/Ethernet over TDM 1+1 APS (Fail-Over) Solutions Monitoring Groomer Solutions

16 E1 with Gigabit Ethernet (Wire Speed) Optical Multiplexer

Orion Telecom Networks Inc. offers 16 E1 with Gigabit Ethernet (Wire Speed) Optical Multiplexer is a unique Gigabit multi-service optical fiber transport solution which transmits both Gigabit Ethernet (Gigabit Wire Speed) data along with upto 16 E1 (TDM) channels over an optical fiber link.

E1, Intelligent Channel Bank

1+1 optical fiber redundancy is also available for minimizing the possibility of transmission loss due to an optical link failure.

The Gigabit (Wire-Speed) Ethernet traffic along with 16 E1's are multiplexed into 1.25 Gbps optical link to provide a compact, high performance, high throughput and cost effective broadband network access solution

Data Sheet (PDF)

  • For connecting to PSTN lines that "Support", or "Do Not Support" "Battery Reversal / Polarity Reversal" (Answer Supervision).
  • Voice Activity Detection (VAD) activated spoof "Answer Supervision"
  • To provide "Disconnect Supervision" to disconnect hung PSTN lines.
  • Provides complete line protection against difficult field conditions.
  • Also used in conventional applications to deliver voice over an end-to-end E1 (radio / fiber / HDSL) links.
  • Also available with PRI ISDN (Euro ISDN) Q.931 interface (optional).

The VCL-CB™ E1 Channel bank offers all types of analog interfaces including FXO, FXS and 2W/4W E&M interfaces, that may be required to connect to an E1 digital interface of a VoIP, VoFR and VoATM Gateway.

The E1 Channel Bank shall interface to the E1 port of any Server / Switch / VoIP Gateway / PBX using R2 CAS (R2 Digital) Signaling (R2 Channel Associated Signaling) as per ITU-T Q.421 / Q.422 recommendations, to connect up to 30 analog interfaces to an E1 port.

The cable plant of most telecom service providers is not designed to deliver E1 services to customers in most parts of the world. The VoIP Gateway / Switch / Server / PBX with an E1 interface, thus, in such cases can only be accessed through dial-up, 2 wire analog lines, the only available link for connecting the Exchange (Central Office) to the Corporate PBX Networks and VoIP Gateways.

Orion's VCL-CB™ intelligent E1 Channel Bank is especially useful in countries, where the cable plant is not equipped to deliver digital E1 services to the customer, who are using the next generation access equipment, which can only connect to an E1 interface.

Features and Highlights

Features and Highlights

  • Used for terminating long distance traffic on PSTN lines that "Support" or "Do Not Support" "Battery Reversal / Polarity Reversal" (Answer Supervision).
  • Uses sophisticated DSP algorithms to provide Voice Activity Detection (VAD) to provide "Answer Supervision" to initiate metering and "Disconnect Supervision" feature to "Disconnect hung / stuck PSTN lines".
  • 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 for traffic termination for corporate and ISP customers, who wish to connect their fully digital networks to the PSTN, through the available analog dial-up PTT lines.
  • Ideal for connecting to PSTN.
  • 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).
  • Available with an E1, 2Mbps interface or a fractional E1 interface (to even start service with less than 10 lines).

The E1 Channel Bank solution is available in two versions:

  • The first E1 channel bank VCL-CB-BR™ provides answer supervision 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).
    Available with FXO, FXS and E&M interfaces
  • The second E1 Channel Bank VCL-CB-INT™ is an intelligent E1 Channel Bank that provides the metering function using Voice Activity Detection (VAD) to provide voice activated "answer supervision" and "disconnect supervision". The VCL-CB-INT™ intelligent E1 Channel Bank uses a sophisticated DSP algorithm to "listen" to the PSTN line for "voice activity" and will provide "answer supervision" information to initiate the metering process.

The VCL-CB-INT™ E1 Channel Bank is available with FXO interfaces which shall connect to the analog PSTN (POTS*) lines from the local Exchange / Telco / Switch.

*POTS: Plain Old Telephone Service

Core System Composition (Common Equipment): Orion's Part #
19-Inch Chassis with connectorized backpanel VCL-CB-000 / 005
-48VDC Power Supply Card VCL-CB-010
E1 Interface Card (Control Card) VCL-CB-015-INT
User Interface Cards:
FXO (Central Office Interface Card) VCL-CB-030-INT


  • 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.

Application Diagram:

VCL-CB-INT™ E1, Channel Bank
Switch / Server / VoIP Gateway Application

E1 Channel Bank Remote Access Server / VoIP Gateway Application