VMUX- INTRODUCTION ( PRODUCT OVERVIEW)

Introduction

The VMX0100 is 2Mbps, 30 Channel E1, highly flexible Add-Drop Multiplexer that provides full range of POTS (voice) and digital data services to subscribers located at different locations, requiring to interconnect and establish a voice and data network over an E1 link. The VMX0100 is a simple, yet powerful E1 Channel Bank for connecting and integrating analog communication equipment with digital E1 services. With variety of features & user interfaces, it can fulfil versatile voice & data communication needs.

PRODUCT OVERVIEW 

The VMX0100, E1, Add-Drop Multiplexer provides wide variety of voice telephony and digital data services. The available Data options includes:

• G.703, co-directional, synchronous data interface @ 64Kbps.
• V.35/V.24/V.11/X.21, synchronous / Asynchronous data interface @ 1200-19200 baud.
• "N" x 64Kbps, V.35/V.24/V.11/X.21 user configurable, synchronous data interface.
• Supports ISDN Digital Subscriber Line (IDSL).
• Supports N*64, G.703 / Fractional E1 interface
• Additional four channels for Teleprinter Data, 50/100 baud on the spare bits.

The system also supports a full range of voice interfaces with user programmable speech output. These includes:

·         2 wire analog voice interface (FXO, FXS) for subscriber dial-up applications.

·         2 wire and 4 wire E&M interface(s) for connecting large PABX(s), or, for inter-connecting analog telephone switches.

·         2 wire Loop Incoming & Loop Outgoing for connecting large PABX(s), or, for inter-connecting analog telephone switches.

·         Configuring any two voice (FXS - FXS) channels to provide Hotline facility.

The design of VMX-0100 is modular and most user interfaces come with a modularity of four channels per card.

VMX-0100 supports two standard E1 PCM trunks. The VMX-0100 used as end terminals are configured to have one PCM trunk whereas the intermediate terminals in a drop / insert network have two PCM interfaces, for the two directions.

Both PCM trunk interfaces are however completely and independently programmable and can be configured if required to support two entirely independent PCM trunks going in different directions. This case would be useful if, for example, the VMX-0100 is working as an end terminal feeding two independent PCM trunks.

Both the trunks can implement standard framing format CRC4 (Cyclic Redundancy Check 4) error checking and meet all relevant CCITT specifications. Line impedances supported are both 120 Ω balanced and 75 Ω unbalanced. In case of Mux failure in Add-Drop configuration, both the PCM trunks are connected to each other, thus bypassing the Mux.

The VMX0100 has an effective; Windows based "Network Management System", which may be used for configuring the system, subsequent remote monitoring and management of the inter-connected systems in the network. An extensive set of alarms, for easy maintenance is provided in the system.