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The VCL-30, E1,
Drop-Insert Multiplexer provides voice telephony and digital data services which may
include: Voice
Interfaces
- FXO
- FXS
- E&M (2 Wire and 4 Wire)
- FXS-FXS (Hot-line)
Data Interfaces
- RS232
- G.703 @ 64 Kbps, co-directional
- IDSL @ 128 Kbps
- V.35, n X 64 Kbps
Product
Overview
The VCL-30, E1, Drop-Insert Multiplexer
provides voice telephony and digital data services which include:
- Interconnecting computer terminals,
- Interconnecting LAN (Local Area Networks)
- Providing leased data lines and real-time video links to
subscribers at speeds ranging from 64Kbps up to 1.024Mbps, using the "N"x64,
V.35 data interface card.
- iDSL (ISDN DSL) leased line interface
- 10BaseT Ethernet G.703, co-directional, synchronous data
interface @ 64Kbps
The VCL-30 E1 Interface operates at a
primary rate of 2.048 MBits/Sec and provides a host of features including, channel drop
and insert facility, high-speed data ports for digital communication links - including
internet access, wide area networking, over a network of VCL-30, E1 multiplexers, for
voice and data applications. The VCL-30 has an effective, Windows based "Network
Management System", which may be used for configuring the system and subsequent
remote monitoring, management and control of the inter-connected systems in the
network. An extensive set of alarms, for easy maintenance are provided in the system. The
system supports low speed synchronous / asynchronous V.24 interface and high speed
synchronous V.35, G.703 data interfaces. The equipment also supports FXO, FXS and
inter-exchange E&M interface used for inter-connecting telephone exchanges ("junction
mux application").
The available data interface options include:
- G.703, co-directional, synchronous data interface @ 64Kbps.
- V.35, synchronous data interface @ 64Kbps.
- "N" x 64Kbps, V.35, user configurable, synchronous
data interface. The value of "N" may by configured by the user according to
bandwidth requirements. The maximum value of "N" = 16 (1.024Mbits/Sec.)
- V.24 / RS232, asynchronous data interface for low-speed data
applications ranging from
300Bps to 19.2Kbps.
- iDSL (ISDN DSL) leased line interface
- 10BaseT Ethernet G.703, co-directional, synchronous data
interface @ 64Kbps
The VCL-30 offers an excellent flexibility
on the choice of transmission medium over which it may be deployed. The transmission
medium may be either twisted copper cable pairs, optical
fiber cable, or wireless.
Features
- Voice and Digital Data services
- Any combination ("mix-n-match") of Voice and
Digital Data services deployed from a single VCL-30 "Smart Shelf"
- Drop and Insert applications
- Drop / Insert of any time slot at the same location. Allows time-slot mapping.
- Modularity of a choice of interfaces ~ 2, voice or data
channels per card
- All 30 channels are programmable as per user requirements
- Digital Data option may be used for internet access or
videoconferencing application
- Hotline facility
- LAN to LAN bridging
- Frame Relay circuit termination
- Powerful Network Management System for monitoring and
network control
- Software programmable level setting for all voice services.
- Diagnostic feature for termination cards
- Automatic bypass of a terminal during an E1 node failure
when used in a "drop-insert" mode
- Microprocessor and software based design
- Compliance with all relevant ITU-T (CCITT) recommendations
- 3U high, compact construction
Highlights
- Field upgrade possible to provide voice, data or both
services.
- Flexibility on use of transmission medium - copper, fiber,
or wireless
- Choice of Interfaces for Data Applications
- RS-232, PC Interface for "Network Control And
Management Software"
- Channel assignment independent of slot position in the
subrack
- Extensive set of alarms
- User programmable alarm responses
- Programmable alarm responses
- Synchronization to different user selectable clock sources
- No forced cooling required
- Temperature Range: -10 Degree Centigrade to +65 Degree
Centigrade
Transmission
Mediums
The VCL-30 offers an excellent flexibility
on the choice of transmission medium over which it may be deployed. The transmission
medium may be either twisted copper
cable pairs, optical fiber cable, or wireless.
Applications
of VCL-30
The VCL-30 is part of the digital hierarchy
to provide 30 channels at 64Kbps. The individual channels are used to provide voice
telephony, digital data to support point to point or networked applications and video
conferencing applications. The VCL-30 is also ideal for cellular infrastructure
applications, in providing cell - switch connectivity.
Other important applications include drop
and insert (add-drop) facility, voice conferencing, hotline facility, high-speed data
ports for digital communication links - including internet access, wide area networking
and much more.
Voice
Applications
The system supports a full range of voice
interfaces with user programmable speech output levels, which include:
- 2 wire analog voice (FXO, FXS) interface 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.
- Configuring any two voice (FXS-FXS) channels to provide
Hotline facility
Data
Applications
The VCL-30 provides 30 digital data
channels @ 64Kbps per channel, to all the subscribers. The VCL-30 provides V.24 (RS232),
V.35, G.703, iDSL (ISDN DSL) leased line interface and 10BaseT Ethernet G.703,
co-directional, synchronous data interface @ 64Kbps.
Application
Diagrams
Interface
Cards
User Configurable Interface Cards
~ Voice Interface: The available voice
application options include;
- POTS service from a Central Office Switch (FXO, FXS)
- Hot Line (FXS - FXS)
- 2 Wire and 4 Wire, E&M interface
~ Ringer
- 30W, sine-wave, 86VRMS Ringer, frequency selectable - 17Hz,
20Hz, 25Hz, 50Hz.
For Hotline and FXS applications.
~ Data Interfaces: The available data
options include:-
- V.35 (64Kbps Synchronous Data - 2 Interfaces per card)
- N x 64 ("N" x 64Kbps Synchronous Data - One
Interface per card)
- G.703 (64Kbps Synchronous Data - 2 Interfaces per card)
- V.24 (up to 19.2Kbps Synchronous / Asynchronous Data - 2
Interfaces per card)
- iDSL (ISDN DSL) leased line interface
- 10BaseT Ethernet G.703, co-directional, synchronous data
interface @ 64Kbps
Core
System Composition
- Control Card 1
- Control Card 2
- User Choice of Interface
- Power Supply Card
- 19" Shelf and Back Plane (Back panel)
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