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Introduction
FLEXIMUX is a versatile 30channel (2.048 MBPS) digital voice and data multiplexer. Besides, use as
terminal equipment, it has the capacity of channelwise drop and reinsert as a wayside unit with flexible voice
interfaces for different adaptations.
The design caters for user selectable low and high speed data interface option. The inbuilt NMS allows
centralized configuration as well as remote status & performance monitoring of the network by a PC. The
associated external equipment in the system can also be centrally controlled via NMS.
Benefits
Drop Insert capability reduces equipment cost in low capacity multimode networks.
Varied services offered by the equipment lend to optimum utilization of infrastructure.
Flexible digital cross connects and reuse of branched off time slot maximize bitrate efficiency.
Dynamic digital branching facilitates channel reallocation for alternate routing.
Inbuilt NMS eliminate requirement of external SCADA.
Minimal variety of cards reduces cost of spares.
Foolproof protection against electrical surges and input/output powersupply abnormalities.
Can work on various media like copper, optic fiber cable or microwave radio.
Features
Compliant with all relevant ITUt
Completely indigenous design.
Dynamic branching through digital crossconnect.
Flexible configuration as a Terminal or Drop/Insert wayside unit or for digital branching.
Reuse on any branched off time slot at the same station for new channel insertion.
Wide choice of voice and data interface circuits.
Digital conferencing circuits up to 21 channels.
Sub –rate multiplexing of low speed data for bandwidth efficiency.
Remote programming of time slot assignment, digital cross –connect, channel gain adjust and data rate settings
from the control station by PC.
Centralized network monitoring of all operating equipment and their performance by NMS.
Telecommand signals from the control for remote operation of associated external equipment.
Redundant power supply(optional)
Any station terminal can be user designated as control, thereby creating total redundancy.
High MTBF.
TECHNICAL DATA
GENERAL
Bit rate & code 2.048 Mbps + 50 ppm HDb3
No. of voice/data chis 30
Signaling Channel associated
Synchronizing (Clock) Internal / External / Rx. Data
Impedance 75 ohm (unbal) or 120 Ohm (bal)
Digital crossconnect All 30 channels
VOICE CHANNELS
Signaling Interface 2W / 4W E&M; Loop with Tk. offering
2. Exchange I/F; Subscriber I/F;
Hotline I/F
Chl. Gain 20 db in 0.1 db steps (remote programmable)
Impedance & return loss 20 db at 600 ohms
Idle channel noise 65 dBm max
Cross talk level 65 dBm max
Conference facility 21 channels
DATA CHANNELS
Low Speed Data
Interface V.24, V.11
Rate 60019.2 kbps
Mode
Sync
Async pt. to pt.
Async pt. to multipoint
Loopbacks Local / Remote
High Speed Data
Interface
G.703 codirectional
V.35 / V.36
Rate
64 kbps (G.703 codir)
48, 56, 64 (V.35 / V.36)
Loopbacks Local / Remote
Broadband Data
Interface V.35 / V.36
Rate N X 64(N = 130)
Loopbacks Local / Remote
E1 Branching
Interface 2048 kbps G.703
Coding HDB3
Channel configurability 130
Monitoring Through NMS
Loopbacks Loca l / Remote
IDSL
Interface ISDN U
Line Code 2B1Q
Operating Range >4 km on 24 AWG
Data Rate 64 / 128 / 144 kbps
IDSL NTU
Interface ISDN U
Line Code 2B1Q
Operating range >4 km on 24 AWG
Data Rate 64 / 128 / 144 kbps
Mode NT
Operating voltage 220V AC + 10% 50 Hz
ELECTRICAL INTERFACE
Network Access 2 nos. of 2mbps port (E&W)
Supervisory & NMS access
Through national bits internally or externally
Through RS232 C serial port or V.11 ( RS485)
interface via protocol converter.
NMS & SUPERVISORY I/F
