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Valiant's E1 PRI ISDN (Euro ISDN) multiplexer as per ITU-T Rec. Q.931
 
 
 
 
 
 

E1 PRI ISDN Q.931 Multiplexer
 

DescriptionValiant's Primary Rate E1 PRI ISDN (Euro ISDN) multiplexer as per ITU-T Q.931 converts 30, dial-up, analog FXS interfaces to a digital E1 PRI ISDN interface.

Valiant VCL-PRI ISDN (Primary Rate Interface) Multiplexer provides an efficient and cost-effective platform to convert 30, dial-up, analog voice circuits to a digital E1, PRI ISDN interface, as per ITU-T Q.931 recommendations.

Our E1 PRI ISDN Multiplexer offers a unique application to deliver voice to campus, office and residential areas over an IP backbone.

This is offered as a compact, modular and cost-efficient solution.

Our E1 PRI ISDN Multiplexer is complete E1 PRI ISDN integrated channel bank solution that provides an E1 PRI (Q.931)  ISDN Interface on the E1 side (which connects to Cisco AS5350 VoIP Router and Cisco Call Manager) and provides 30, FXS Ports (with long loop drivers) on the customers side.

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One of the key features includes the ability to provide contemporary technology over an IP backbone, and also overcome the limitations of any PBX systems, since no PBX system offers long loop driver capabilities and that no PBX system shall be able to connect to telephone sets over such long (4-8 KM) distances.

An E1 integrated channel bank solution (with an E1 PRI (Q.931) ISDN Interface on the E1 side) provides upto 30, FXS Ports on the customers side - which shall connect to upto 30 customer's telephone sets (each connection can have as many a two / three telephone sets / extensions in parallel, depending on their distance from the E1 PRI ISDN channel bank.

Application Note

The E1 end of the channel bank with the E1 PRI (Q.931) ISDN Interface shall connect to your Cisco AS5350 E1 Router(s) / Call Manager(s), through the E1 PRI (Q.931) ISDN Interface(s). The AS5350 E1 Router(s) / Call Manager(s), shall carry the Voice Over IP traffic and then inter-connect on your IP backbone.

On the customer side, the E1 PRI integrated channel bank solution shall provide 30, FXS interfaces (each of which shall drive upto an 800 Ohms FXS loop - which shall be 4-8 KM, depending on the cable gauge being used on the analog plant) and connect to analog telephone sets at the customer's premises.

The FXS ports shall provide the dail-tone to the customer's telephone sets and accept DTMF dialing from customer's telephone sets.

How does this work?

On the CALLING SIDE, the customer pick's up the handset to make a call. The FXS port provides the dial-tone. The customer dials the number and the call is transmitted through the E1 port of the integrated E1 PRI (Q.931) ISDN channel bank to the E1 PRI ISDN Port of the Cisco VoIP Router / Call Manager and the call is processed, accordingly.

On the RECEIVING SIDE the call, which had been processed by the Cisco VoIP Router / Call Manager is received over the IP backbone and routed to the RECEIVING SIDE. The E1 PRI ISDN Port of the Cisco VoIP Router on the the RECEIVING SIDE alerts the RECEIVING SIDE that a call is being received and the corresponding FXS port of the CALLED NUMBER provides a 75VRMS RING signal to the customer's telephone set and makes it ring. When the customer answers by picking up the handset the ring disconnects and the call is established.

Features include

  1. It is a cost-effective solution, since the Cisco equipment connects to external equipment through E1, PRI ISDN ports. The long-loop FXS drivers are an intergared part of the E1, PRI ISDN channel bank which provides the FXS ports with dial-tone and an integrated 75VRMS ring generator (required to ring a telephone set over such a long loop).
  2. It is less expensive.
  3. The proposed solution is a compact solution - thus less prone to faults. Modular and easy to service.
  4. Using simple FXS line drivers require the duplication of the FXS circuits that already exist on the analog ports of the Cisco equipment - if that is used. This not only increases the possibility of equipment failure but also increases the size and the bulk of the equipment that shall be required to be used. This also results in higher costs shall cost more and be less efficient.
  5. The E1 integrated channel bank solution offers and provides the capability to drive not just the FXS loops over a longer distance by providing the extra current and voice amplification over a longer analog spans, but integrates a HIGH CAPACITY RING GENERATOR which delivers a 75VRMS, un-balanced ring-signal which shall be required to provide a ring current and voltage to a telephone set over such a long loop.
  6. Fully protected as per the ITU-T standards against external induced voltages from power cables etc. that shall be common to such long-haul FXS loops.
  7. Shall connect to upto 30 customer's telephone sets (each connection can have as many a two / three telephone sets / extensions in parallel, depending on their distance from the E1 PRI ISDN channel bank.
  8. Features of the E1, PRI (Q.931) ISDN channel bank include:
    • TE / NT mode switchable
    • CALLER ID display facility
    • TCP/IP telnet remote access
    • TEI value - user selectable
  9. The VCL-PRI ISDN (Euro ISDN) Multiplexer bridges the gap between the analog and the digital E1 world by providing an intelligent interface to connect E1, PRI ISDN to 30 analog telephone sets. VCL-PRI ISDN (Euro ISDN ) Multiplexer is an ideal choice for Corporate and ISP customers who wish to connect their equipment with E1, PRI ISDN digital interfaces to analog telephone sets.

The VCL-PRI ISDN (Euro ISDN ) Multiplexer shall interface to the E1, PRI ISDN port of any Switch / Server / PBX using PRI ISDN (Euro ISDN) signaling as per ITU-T Rec. Q.931 to interconnect up to 30, analog interfaces to the E1, PRI ISDN port.

Application Diagram

E1 PRI ISDN with Cisco

E1 PRI ISDN Multiplexer with Cisco

E1 PRI ISDN with Qunitum


E1 PRI ISDN Multiplexer with Quintum
 

E1 PRI ISDN - Call Center Application

E1 PRI ISDN Multiplexer for Call Center applications
 

Features

  • Available interface is FXS.
  • VCL-PRI ISDN (Euro ISDN) Multiplexer uses PRI ISDN (Euro ISDN) signaling in accordance with ITU-T Q.931 recommendations.
  • NMS Card with Telnet support
  • VF (Voice Frequency) specifications are in accordance with G.712, ITU-T recommendations.
  • Ideal choice for corporate and ISP customers, who wish to connect their fully digital PRI ISDN networks to analog telephone sets.

Highlights

  • CALLER ID: Supports / provides DTMF caller ID on all 30 ( FXS) analog circuits.
  • Management System for monitoring and system configuration.
  • Compliance with all relevant ITU-T (CCITT) recommendations
  • 3U high, compact construction
  • Extensive set of alarms
  • Synchronization to different user selectable clock sources (User Selectable Priority Assignment)
  • Available with E1, PRI ISDN 2Mbps interface or fractional E1, PRI ISDN  interface.

Mechanical Specifications

Rack Mounting Standard 19 inch DIN rack
Height 3U (133.22 mm)
Depth 292 mm
Width 482 mm
Weight 8.50 Kgs.

Ordering Information

Core System (Common Equipment) Choice of Interface Cards
Control Card 1 & Control Card 2 FXS (Remote / Subscriber)
Power Supply Card Ring Generator
Connectorized Backplane & .
19 inch Shelf .

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