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| STM-1 SDH Add-Drop Multiplexer up
to 63 E1, 84 T1, E3 DS3, Ethernet |
 The
VCL100MC-1 STM-1 (up to 63 E1 / 84 T1) with E3, DS3, 8 port
10/100BaseT Ethernet interfaces is a compact, modular, and
cost effective STM-1 SDH multiplexer equipment designed to
manage bandwidth and provide E1 or fractional E1, voice and
data access service over STM Networks. It is customized for
the traffic demands, in the access network, typical of residential
or business customers. The product supports end-to-end provisioning
and management of services across all the segments of the
optical network. It combines innovative optical networking
software with the intelligence of SONET/SDH to deliver a flexible,
cost-effective network solution.
VCL100MC-1 (up to 63 E1 / 84 T1) with E3, DS3, 8 port 10/100BaseT
Ethernet interfaces is a 3U height multi-card chassis system
that provides flexibility to the customers in terms of expansion
to support additional client interfaces by adding new modules
in the field.
The system has two STM-1 optical / electrical interfaces in
the aggregate side and allows for up to 3 tributary add-on
cards. The following tributaries are available as add-on cards
for the chassis:
- 28 E1/T1 tributaries (software configurable as E1 or DS1)
- 1 E3/DS3 tributaries (software configurable as E3 or DS3)
- 8 port 10/100Base-T Ethernet (IEEE 802.3)
- 2xSTM-1o
- 2xSTM-1e/140Mbps tributary interfaces (software configurable)
Additionally it provides a single 10/100Base-T Ethernet port,
which can be mapped to one VC-12 bandwidth towards the aggregate
side. This feature does not use any tributary slot and hence
can supplement E1/DS1/E3/DS3 customers requiring a single
Ethernet interface. This Ethernet interface on the base card
is optional.
The STM-1 / STM-4 can be managed through an integrated NMS
that manages all the equipment, providing customers with end-to-end
provisioning from a single platform for multiple service types
- from E1/DS1s, E3/DS3s, E4/STM-1e, STM-1o and 10/100Mbps
Ethernet services. |
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 STM-1
SDH Add-Drop Multiplexer up to 14 E1, 14 T1, E3 DS3, Ethernet
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 Next
generation SDH multiplexers to provide multiple services from
E1/T1 tributaries (software configurable as E1 or DS1) and
1 E3/DS3 tributaries (software configurable as E3 or DS3)
or an 8 port 10/100Base-T Ethernet interfaces.
The STM-1, VCL100CPE (with 14
E1 / DS1)and with one tributary
interface card (E3 / DS3 / Ethernet) is an ultra-compact and
cost-effective customer premises bandwidth provisioning STM-1
SDH multiplexer equipment designed to meet low or medium capacity
bandwidth service demands.
The chassis is 19" rack or wall mountable as per customer
requirements.
This unique product supports end-to-end provisioning and
management of voice and data services across all the segments
of the optical network - from the customer premises to the
core. It combines innovative optical networking software with
the intelligence of SDH to deliver a flexible solution to
today's service providers. The VCL100CPE can be configured
as a Terminal Multiplexer (TMUX) or an Add-Drop Multiplexer
(ADM), with E1, E3, DS3 or 10/100 Ethernet Interface service interfaces and trunk interfaces at STM-1 rate.
The product has a built in non-blocking cross-connect at VC-3
and VC-12 granularity for efficient traffic grooming. In view
of the growing demand for packet services, VCL100CPE provides
an Ethernet tributary interface to carry inter-office traffic
from corporate LANs, campus networks or from ISPs.
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| E2
(4E1) Optimux- 8Mb/s Optical Line Transmission and 2/8 Mbps
Digital Multiplexer. |
|  VCL
- E2, Optimux (4E1) is an Integrated OLTE and multiplexer
/ demultiplexer unit, based on PDH (Plesiochronous Digital
Hierarchy) technology. It multiplexes four 2.048 Mbps (hereafter
referred to 2Mbps) E1 tributaries into a single 8 Mbps, E2
stream and then transports it as an optical signal on a Single
Mode, 1300nm optical fiber cable, without the use of ant signal
repeaters up to a distance of over 50 KM (Optical Loss Budget
³ 30dBm). The muldex also does the reverse processing i.e.
demultiplexing a received optical signal into four 2Mbps E1
tributaries.
Valiant's Optimux solution multiplexes, 4 E1 stream into
one 8 Mb signal and then transport it on a 1300 nm Single
Mode Optical Fiber pair. On the de-multiplex side, it receives
the optical signal and de-multiplexes it into 4, electrical
E1 signals.
The card uses one E1 quad line unit for interfacing to E1
streams. This device provides data and extracted jitter free
clock meeting the G.703 standards. The jitter attenuater meet
G.735 specifications. The multiplexer device provides for
in-built DPLL circuits for recovery of received E1 clocks.
The device provides various alarm conditions as per draft
G.775 recommendations. These include loss of signal at E1,
loss of signal at E2, loss of frame sync at E2, detection
of AIS at E2 and bit error exceeding 1 in 1000. The output
of the mux chip is connected to E2 line interface unit which
provides the HDB3 coder along with clock extraction. The control
functions are carried out by a micro controller.
The power supply module accepts-48VDC input and provides
5V output required for the operation of the card.
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| E3,
34Mbps Optical Line Transmission Equipment |
 The
VCL, E3-OLTE is a 34Mbps Optical Line Transmission Equipment
which converts and transports a ITU-T G.703 compliant standard
electrical E3, 34Mbps signal into a G.823 and G.821 compliant
optical signal for transport over 1310nm optical fiber cable.
The optical link, between two OLTE terminals is established
on one pair of optical fiber. One fiber link is used for transmit
and the other fiber link is used for receive.
A complete optical line transmission system comprises of
two OLTE terminals one at each end of the optical fiber cable.
The E3, 34Mbps OLTE also offers 1+1 optical protection (optical
redundancy).
Both the Local and the Remote terminals can be monitored
and controlled by a Windows based GUI (Graphical User Interface),
from a single location.
The VCL, E3-OLTE is available in two configurations:
- With the option of 1+1 Optical Redundancy (Protection
Switching), in which the transmission automatically switches
to a STANDBY optical link in the event of a failure of the
PRIMARY optical link.
- Without the option of Optical Redundancy (Protection Switching).
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