1. Orion Telecom Networks Inc. 2005 VCL-E3 OLTE 34Mbps Optical Line Transmission Equipment Slide 1 Updated : January 1st, 2005 16810, Avenue of Fountains, Suite # 108, Fountain Hills, AZ 85268, U.S.A. Phone: +1 (480) 816-8672 Fax: +1 (480) 816-0115 E-mail: sales@oriontelecom.comsales@oriontelecom.com Web Site: http://www.oriontelecom.comhttp://www.oriontelecom.com

2. Orion Telecom Networks Inc. 2005 VCL-E3 OLTE (Optical Line Transmission Equipment) PRODUCT OVERVIEW VCL, E3 34Mbps (OLTE) Optical Line Transmission Equipment converts and transports a ITU-T compliant standard E3, 34Mbps signal on optical fiber. Local and the Remote terminals can be monitored and controlled by a Windows based GUI (Graphical User Interface), from a single location. Auto Laser shut off facility. Powered by STM-1 grade Class I Laser - by Lucent Technologies. The VCL, E3-OLTE is available in two configurations: With the option of 1+1 Optical Redundancy (Protection Switching). Without the option of Optical Redundancy (Protection Switching). Slide 2

3. Orion Telecom Networks Inc. 2005 Single - card implementation 1+1 Optical Redundancy (Protection Switching) option Standard CCITT (ITU-T) compliant interfaces Auto Laser Shut Off facility Remote and local terminal monitoring and control through back panel by a Network Management System FEATURES HIGHLIGHTS Extensive alarms and status indication facility Operates on nominal -48V DC input Distributed on-board power supply Microprocessor controlled with powerful diagnostic facilities for both remote and local systems Powered by STM-1 grade Class I Laser - by Lucent Technologies Stored program controlled Highly reliable and compact VCL-E3 OLTE (Optical Line Transmission Equipment) Slide 3

4. Orion Telecom Networks Inc. 2005 The LEDs provide the following indications: Led 1 - -48V Led 2-+5VDC Led 3-34Mbps Link 1 Optical Transmitter Led 4-34Mbps Link 1 Optical Receiver Led 5-34Mbps Link 2 Optical Transmitter Led 6-34Mbps Link 2 Optical Receiver Led 7-34Mbps electrical interface (Error) L1 is for switching on / off optical transmitter - Link 1 L2 is for switching on / off optical transmitter - Link 2 FRONT PANEL VIEW OF VCL-E3 OLTE 19 inch Shelf TX1Transmit port - Optical link1 TX2Transmit port - Optical link2 RX1 Receive port - Optical link 1 RX2Receive port - Optical link 2 NUNot Used - 4 8 V + 5 V D C L A S E R 1 X M T L A S E R 1 R C V L A S E R 2 X M T L A S E R 2 R C V 3 4 M B E R R R E S E T L1 L2 VCL-E3 OLTE VCL-E3 OLTE (Optical Line Transmission Equipment) Slide 4

5. Orion Telecom Networks Inc. 2005 Tx Rx 34 Mbps electrical link34 Mbps Optical link RS 232 interface Alarm Extn. -48 VDC Input Laser Transmitter Laser Receiver - 4 8 V + 5 V D C L A S E R 1 X M T L A S E R 1 R C V L A S E R 2 X M T L A S E R 2 R C V 3 4 M B E R R R E S E T L1 L2 VCL-E3 OLTE Front View of Shelf VCL-E3 OLTE (Optical Line Transmission Equipment) Slide 5

6. Orion Telecom Networks Inc. 2005 Rear View of Shelf This port is for communication between E3 OLTE and PC This connector is for -48V DC supply from DC source to E3 OLTE These connectors are for receive and transmit of 34Mbps electrical signal (through 75 Ohms impedance co-axial cable) Alarms VCL-E3 OLTE (Optical Line Transmission Equipment) Slide 6

7. Orion Telecom Networks Inc. 2005 VCL-E3 OLTE VCL-E3 OLTE 34Mbps Optical Link 34Mbps Electrical Signal 34Mbps Electrical Signal VCL-E3 OLTE (Optical Line Transmission Equipment) VCL-E3 OLTE APPLICATION Slide 7

8. Orion Telecom Networks Inc. 2005 E1 16 E1 to 1 E3 E3 Multiplexer E3 OLTE VCL 2/34 Mbps multiplexer with 34 Mbps OLTE (Optical Line Transmission Equipment) 1310 nm Optical Line VCL-E3 OLTE (Optical Line Transmission Equipment) Slide 8

9. Orion Telecom Networks Inc. 2005 Technical Specifications Number1 Nominal bit rate34368kbps Bit rate tolerance± 20ppm Line codeHDB3 Frame structureas per G.751 Interfacesas per G.703 Input Jitter Acceptance 100Hz to 1KHz -  1.5UI 10KHz to 800KHz -  0.15UI Maximum Output Jitter  0.05UI Connectivityvia spinner type connectors Cable75  unbalanced Permissible attenuation12dB at 17184kHz 34Mbps, E3 Electrical Interface 34Mbps, Optical Interface Type of TransmitterClass 1 Laser Number1 (+1) with optical redundancy opti Nominal bit rate34368kbps Transmit wavelength1310nm (standard) 1550nm (optional) VCL-E3 OLTE (Optical Line Transmission Equipment) Slide 9

10. Orion Telecom Networks Inc. 2005 Transmit output-12dBm (min at *EOL - End Of Life) -8dBm (typical) -5dBm (maximum) (other outputs available on request) Transmit Spectral Width<4nm Receive wavelength1310nm (standard) 1550nm (optional) Operating wavelength rangeTransmitter: 1260nm - 1360nm Receiver:1100nm - 1600nm Receiver dynamic range  30dBm Receiver sensitivity-38dBm (typical) -36dBm (min) Optical ConnectorsFC-PC connectors Mechanical Specification Width: 480 mm Depth: 280 mm Height: 90 mm Weight: 4.20 Kg VCL-E3 OLTE (Optical Line Transmission Equipment) Slide 10

11. Orion Telecom Networks Inc. 2005 VCL-E3 OLTE (Optical Line Transmission Equipment) Orion’s Products E1, Voice & Data Drop-Insert Multiplexer PRI ISDN (Q.931) Multiplexers E1 Intelligent Channel Banks E1 / T1 DCME (Digital Circuit Multiplication Equipment) - Voice Compression Equipment Thin Route DCME E1 / T1 Echo Cancellers E1 / T1 Digital Cross Connect T1 / E1 Converters E3, 34Mbps Multiplexer 34Mbps Optical Line Transmission Equipment (OLTE) STM 1 / STM 4 - SDH Equipment Remote Asset Management Systems Slide 11

12. Orion Telecom Networks Inc. 2005 VCL-E3 OLTE (Optical Line Transmission Equipment) Thank you for your attention For more details visit us at our Web Site at http://www.oriontelecom.com 16810, Avenue of 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 Slide 12