1. Orion Telecom Networks Inc. 2005 VCL-T1 DACS 8 Port, T1 Digital Access Cross Connect Switch 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-T1 DACS Product Overview T1 Digital Access Cross Connect Switch 4 Ports, T1 Digital Access Cross Connect Switch 8 Ports, T1 Digital Access Cross Connect Switch Offers full cross-connect functionality to cross-connect, and / or aggregate DS-0s, Nx56/64Kbps consecutive data channels and, Fractional T1 channels to full T1 channels. Uni-directional Monitoring Bi-directional Monitoring Non - Obstructive Monitoring Application Combine traffic from partially - utilized facilities onto a single fully - utilized T1 Slide 2

3. Orion Telecom Networks Inc. 2005 ISP - Providing Fractional T1s to Subscribers Data - Aggregating Fractional T1 Data Circuits Monitoring & Billing - Non-Obstusive Line Traffic Monitoring for “Listen-Only” and Billing Applications Cellular - Extending Fractional T1 ports from MTSO to Cell-Sites. APPLICATIONS: Remote TCP/IP Access for configuration and Monitoring. Windows based User Friendly GUI for easy configuration. Available in 4 Port & 8 Port configuration. Low Cost. HIGHLIGHTS: VCL-T1 DACS Slide 3

4. Orion Telecom Networks Inc. 2005 Provides DS0, "n"x64Kbps and Fractional T1 grooming for up to 8 T1 ports. Rear Access Windows 95 based GUI, Software configurable Easy to use Configurable from 4, T1 ports to 8, T1 ports depending on user requirements. LED Indications on the front panel for alarms and status. FEATURES Reduce access costs by combining partially loaded T1s onto a single T1. Rear access wiring. Improves wiring and cable management. Support Nx56/64kbps fractional T1 operation and grooming. Can be ordered for (non - obtrusively) connecting to monitoring/billing equipment for Live - Traffic monitoring and cross connect functions. Easy to install and simple to use. BENEFITS VCL-T1 DACS Slide 4

5. Orion Telecom Networks Inc. 2005 ISP Digital Cross Connect Application Providing Fractional T1s’ to Subscribers Internet T1 Digital Access Cross Connect Fractional T1 Router VCL - T1 DACS Fractional T1, Channels upto 7, VCL - T1 DACS Aggregates upto 7, Fractional T1 Channels to a Single T1 VCL-T1 DACS Slide 5

6. Orion Telecom Networks Inc. 2005 Cell Site VCL - T1 DACS Digital Access Cross Connect Cell Site MTSO Switch Backhaul - Cellular Application using VCL-DACS VCL-T1 DACS Slide 6

7. Orion Telecom Networks Inc. 2005 Equipment - B Combine traffic from partially - utilized facilities onto a single fully - utilized T1 Non - Obstructive Monitoring Application VCL-T1 DACS Uni-directional Monitoring To monitor an T1 link in a single direction, you will need to connect ONE high impedance T1, RX pair of the DACS, as it is only the Rx (RECEIVE) pair that is capable of listening. Please leave the Tx (TRANSMIT) pair un-connected. T1 Rx Tx Rx Tx T1 Equipment - A Monitoring Point Monitoring Equipment Rx Tx T1 DACS RxTx T1 Port # 1 RxTx T1 Port # 8 X NC Slide 7

8. Orion Telecom Networks Inc. 2005 VCL-T1 DACS Bi-directional Monitoring Equipment - B T1 Rx Tx Rx Tx T1 Equipment - A Monitoring Point T1 DACS RxTx T1 Port # 1 RxTx T1 Port # 8 X NC X NC RxTx Rx Tx T1 Port # 7 To monitor an T1 link in both directions, you will need to connect TWO high impedence T1, RX pairs of the DACS, i.e. use 2, Hiz T1 ports. Monitoring Equipment Slide 8

9. Orion Telecom Networks Inc. 2005 Front View of the Shelf 7 8 6543 2 1 VCL-T1 DACS Digital Access Cross Connect ERR+5V-48V Rear View of the Shelf RJ-45 Version VCL-T1 DACS 100 Ohms, RJ-45, T1 Interface Connectors - 8, T1 channels Slide 9

10. Orion Telecom Networks Inc. 2005 TECHNICAL SPECIFICATIONS System Management Windows 95 /Windows 98 based GUI, Alarm Contact Closures 2 Alarms Relays, Type - Form "C" relay, Temperature Operating 0 0 C to 50 0 C Humidity 5% to 95% Non-Condensing VCL-T1 DACS Mechanical Specification Width:480mm Depth:280mm Height:90 mm Weight:4.20 Kg. T1 Interface Line RateT1 (1.544 Mbps ± 50 bps) Available Time-Slots1-24 Framing Structure as per ITU(CCITT) G.704 Framing Options D4, ESF, SLC96 (Selectable) Line CodingAMI, B8ZS (Selectable) Electrical ITU-T G.703 Jitter ITU-T G.823, ITU-T 1.431 Impedance 100 Ohm Connector Wire-Wrap or RJ-45 (optional) RJ-45 (female) extension cords, optional. Power Consumption Power Consumption10 Watt Slide 10

11. Orion Telecom Networks Inc. 2005 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 VCL-T1 DACS

12. Orion Telecom Networks Inc. 2005 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 VCL-T1 DACS