1. Slide 1 Orion Telecom Networks Inc. - 2010Slide 1 STM-1 Optical to STM-1 Electrical Converter xcvcxv Updated: April, 2010Orion Telecom Networks Inc. - 2010 STM-1 Optical to STM-1 Electrical Converter Product Presentation

2. Slide 2 Orion Telecom Networks Inc. - 2010Slide 2 STM-1 Optical to STM-1 Electrical Converter Product Overview  Provides a simple and cost-effective conversion between STM-1 optical interface to STM-1 electrical interface  Supplied with one STM-1 electrical interface and one STM-1 optical interface  1+1 option is also offered and available  Complete loop-back facility is supported for system diagnostic and commissioning  Compact casing and simple operation achieve cost saving and investment protection  Offers three power supply options  Dual DC - 48V Inputs (range -18V DC ~ - 72V DC)  Dual AC 110V AC to 240V AC, 50 / 60 Hz Inputs  Dual (1+1) power inputs for power source redundancy

3. Slide 3 Orion Telecom Networks Inc. - 2010Slide 3 STM-1 Optical to STM-1 Electrical Converter Features  1+0 STM-1 Optical to STM-1 Electrical  1+1 STM-1 Optical to STM-1 Electrical options available  SFP based design. Provides field removable / upgradable optical SFPs  Short haul (1310nm), long haul (1550nm) and multi mode (850nm) optical SFP modules offered  Optical distances covered: 20 Km, 40 Km, 60 Km, 80 Km, 120 Km, 150 Km, 200 Km and 260 Km  Provides low cost STM-1 Optical to STM-1 Electrical conversion  High reliability, complies to ITU-T G.703 and G.957  State-of-the-art design, ensure normal working under difficult environments

4. Slide 4 Orion Telecom Networks Inc. - 2010Slide 4 STM-1 Optical to STM-1 Electrical Converter Features  Management options:  Serial Management Port (RS232) - COM Port  10/100BaseT for remote management over a LAN / TCP / IP Network  SNMP V2  USB Interface – COM Port  Network Management System (NMS)  Simple operation and maintenance  Compact design and low power consumption  75 Ohms compliant with ITU-T G.703 and Telcordia GR-253 155Mbps electrical interfaces (BNC connector)  ITU-T G.783 compatible loss of signal detect

5. Slide 5 Orion Telecom Networks Inc. - 2010Slide 5 STM-1 Optical to STM-1 Electrical Converter Features  Supports local and remote loop-back on electrical or optical interface for system diagnostics  Handles over 12.7dB of cable loss  Duplex LC optical interface  Hot-pluggable  Supports DDM function for read back of transmit and received optical power  Class 1 laser safety  Compliant with ITU-T G.957 STM-1

6. Slide 6 Orion Telecom Networks Inc. - 2010Slide 6 STM-1 Optical to STM-1 Electrical Converter Thank you for your attention For more details visit us at our Website at http://www.oriontelecom.com Regional Office: Miami, Florida Orion Telecom Networks Inc. 4000 Ponce de Leon Blvd. Suite 470, Coral Gables, FL 33146 U.S.A. Phone: 1-305-777-0419, Fax: 1-305-777-0201 E-mail: sales@oriontelecom.com Website: http://www.oriontelecom.com Headquarters: Phoenix, Arizona Orion Telecom Networks Inc. 16810, Avenue of the Fountains, Suite # 108, Fountain Hills, AZ 85268 U.S.A. Phone: +1 480-816-8672, Fax: +1 480-816-0115 E-mail: sales@oriontelecom.com Website: http://www.oriontelecom.com