SDH Field is Very Different with PDH.in This Field Systems Need High Stablity in Frequency and Operation and long and  Guaranted MTBF For System Parts and Components.By This Microwave SDH Systems Manufacture in The World is Very Limit.In SDH Field we Can Offer Nera Products  From Norway in High Capacity SDH and Tailyn Microwave Radio in Low Capacity SDH Systems.Iranin Telecom Companies in Previous Years Bought Nera Systems and Some of Them Have Not Good Idea About Nera.But Current Nera Systems is Very Different.they have Easy Operation and High Quality and Now Used in about 60 Country.Pls Visit Below Links For Select You Compatible Model and inform us about Your Requirments.
WLM-S2000 (SDH microwave)

Features

16/32/63×E1s, Gigabit, 1 or 2×100Base-T, Ethernet, and 1×STM-1 with built-in Ethernet interface

Bandwidth capacity and modulation controlled by software

Support 1+0, 1+1, 2+0, west/east applications (with ADM capability)

Ring application with cross connect function

FEC- Trellis coded modulation concatenated with Reed-Solomon coding

Field upgradeable by Plug-In assembly

RF, IF, digital loopback capability

Built-in BER monitor

Delay setting for hitless (errorless) switching

Wide operating temperature range

Wide DC power input range and low power consumption

SNMP network management protocol

Up to 300 meters separation between IDU and ODU

 

Nera Networks AS

Nera Networks has designed, developed

Nera-SDH-High power long haul microwave radio solution for all applications

Overview

Evolution Series™ LONG HAUL is a flexible microwave long distance system for all-indoor or split-mount installations.High power transceiver units with combiner space diversity and hitless n+1 protection switching make the Evolution Series™ LONG HAUL an ideal choice for long distance transport networks.The embedded optional X-connect combined with a wide range of user interfaces make the solution a complete multiservice long haul radio system.

Choice of SDH/SONET interfaces or the multichannel scalable Native Ethernet interface makes the migration strategy to all IP networks simple.

Tiawn-Tailyn Communication Company,Ltd 

Tailyn Communication Company,Ltd.was founded in 1980 by Mr. John Chen as a joint venture with a US partner, Lynch Communication Systems, who owned a 40% share in the company. In 1989, Tailyn bought back the foreign investment from Alcatel who had previously acquired Lynch, making Tailyn a solely owned private company.

Now, Tailyn is nearly thirty years of technical expertise as the leading telecommunications equipment providers in Taiwan, Tailyn is well positioned to take on the challenge of the 21st century. Since 1980, the company's core business has been in the design, manufacture and sale of local loop access products for advanced optical transmission systems, digital added main line systems, digital loop carrier systems and fiber optic cable. To better meet the vast demands on bandwidth, we have further expanded our existing product line to DSLAM, and Integrated Access Devices.

 

The Evolution Series™ LONG HAUL is based on the common platform concept of the Evolution Series™.

A common scalable hardware, simpler deployment, reduced spares needs and a common competence requirement, reduces the operation cost for the network operator.

The unique power efficiency of the Evolution Series™ LONG HAUL reduces the environmental foot print of the network.

Substantial cost savings is achieved due to reduced energy cost and reduced cost of site infrastructure such as airconditioners, batteries and solar panels.

The unique split-mount option makes the solution even more effective. By mounting the transceiver units outdoor in a low loss branching arrangement, the heat is removed from the building/cabin and the reduced waveguide loss improves the system availability.More Information.............

, manufactured and deployed transmission solutions since its inception in 1947.
We generate revenues through sales in more than 100 countries. Over 95% of our sales are to customers outside of Norway. Total revenue for 2008 was nearly NOK 1,800 million.Nera Networks has over 700 employees worldwide. We have more than 25 sales and customer support offices and a large research & development organisation.Nera Networks has headquarters in Bergen, Norway, regional offices in the Americas, Middle East, Africa and Asia (through Nera Telecommunications Ltd., a separate company listed in Singapore). In 2008 we opened our state-of-the-art production facilities in Liptovský Hrádok in Slovakia.The CEO of Nera Networks is Mr. Per Arne Henæs. 

Our philosophy
Throughout our international organisation we are proud to take on the Scandinavian way of supporting our customers; informal, to-the-point, flexible and focused. This is what we call “The Scandinavian Spirit.”

We make a continual effort to understand networks better than anybody else. In this way , we help our customers to stay at the forefront of technological developments - and ahead of the competition. Nera Networks provides network solutions that link businesses and communities, large and small, worldwide.

In short, our business is Bridging Societies.