1. Orion Telecom Networks Inc. 2005 VCL-TRLD, Thin Route DCME Voice Compression 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 Thin Route DCME "Thin Route" Voice Compression Equipment Provides “Toll-Quality” voice telephony channels for "thin route" (low density) applications. The VCL-TRLD is available in two versions. The first version provides a Single, Toll Quality voice channel @ 9.6Kbps for transmission over a standard RS232 (asynchronous) data interface. The second version provides Six, Toll Quality voice channels on a single, 64Kbps, synchronous channel (single time-slot). Product Overview Slide 2

3. Orion Telecom Networks Inc. 2005 Mean Opinion Score:MOS 4.0 3.5 3.0 2.5 2.0 1.5 1.0 PERFORMANCE Thin Route DCME GeneralBusiness Infrastructure RuralLong distance telephonyCivil Engineering Distance LearningTelcosOffshore Oil Rigs Disaster Relief Wireless NetworksProduction FarmingScalable Call Centers Pipelines TourismRetail OutletsWater Works Applications Slide 3

4. Orion Telecom Networks Inc. 2005 FEATURES HIGHLIGHTS Modular Architecture Scalable - build as you grow. Transports voice over point-to-point satellite data links, dedicated limited bandwidth data channels, IP networks (optional additional hardware required). 3U high, compact construction - 12 voice compression channels per shelf. 6:1 Compression Ratio One "Toll-Quality" voice channel over RS232, 9.6Kbps (asynchronous) link. Six "Toll-Quality" voice channels over a synchronous 64Kbps (single time-slot) channel. Advanced, DSP based Vertibi Decoder for superior voice quality. Distributed (independent) power-supplies for maximum redundancy. Thin Route DCME Slide 4

5. Orion Telecom Networks Inc. 2005 VSAT Thin Route Telephony, Remote Access - Link FXS - FXO Telco Switch PSTN PBX VCL-TRLD Satellite FXS 1 Voice Channel @ 9.6kbps (Asynchronous Rs232) or 6 Voice channels @ 64kbps (Synchronous) or 12 Voice channels @ 128kbps (Synchronous) Medium may be satellite (VSAT) or 9.6kbps (RS232) datalink Thin Route DCME Slide 5

6. Orion Telecom Networks Inc. 2005 Thin Route Telephony, Point to Point VF Link for Hot-Line Access FXS - FXS VSAT Satellite Voice Channel @ 9.6kbps (Asynchronous Rs232) or 6 Voice channels @ 64kbps (Synchronous) Network medium can be satellite (VSAT) or 64kbps (Single Twest) datalink FXS VCL-TRLD Thin Route DCME Slide 6

7. Orion Telecom Networks Inc. 2005 6 Compressed Voice Channels @ 64Kbps ( single time-slot ) 6 Compressed Voice Channels @ 64Kbps ( single time-slot ) BTS Telco Switch PSTN PBX BTS Telco Switch PSTN PBX Cellular, Thin Route, Prepaid Calling Card, Call Center applications E&M - E&M VCL-30 E1, CAS R2 6, VF Channels E&M Interface 6, VF Channels E&M Interface VCL-TRLD Network Medium Thin Route DCME Slide 7

8. Orion Telecom Networks Inc. 2005 Front View of VCL-TRLD From Left to Right Thin Route DCME Slide 8

9. Orion Telecom Networks Inc. 2005 Exchange / Switch Application for Standard POTS Service (FXO- FXS) FXO VCL-TRLD 6 VF, FXO Channels G.703 Subrate Mux 6 X 9.6Kbps Compressed VF Network Tx / Rx SITE - A 64Kbps Data Link Thin Route DCME Slide 9

10. Orion Telecom Networks Inc. 2005 FXS VCL-TRLD G.703 Subrate Mux 6 X 9.6Kbps Compressed VF Network Tx / Rx 64Kbps Data Link SITE - B Figure # 1 Application for Standard POTS Service (FXO- FXS) 6, VF Channels Thin Route DCME Slide 10

11. Orion Telecom Networks Inc. 2005 For Application of Hotline (Ring-Down) Service (FXS - FXS) FXS VCL-TRLD G.703 Subrate Mux 6 X 9.6Kbps Compressed VF Network Tx / Rx 64Kbps Data Link 6, VF Channel SITE - A Thin Route DCME Slide 11

12. Orion Telecom Networks Inc. 2005 FXS VCL-TRLD G.703 Subrate Mux 6 X 9.6Kbps Compressed VF Network Tx / Rx 64Kbps Data Link Figure # 2 SITE - B For Application of Hotline (Ring-Down) Service (FXS - FXS) 6, VF Channels Thin Route DCME Slide 12

13. Orion Telecom Networks Inc. 2005 For Application of 2 Wire / 4 Wire E&M Trunks (E&M - E&M) Exchange / Switch E&M VCL-TRLD 6, E&M Channels G.703 Subrate Mux 6 X 9.6Kbps Compressed VF Network Tx / Rx SITE - A 64 Kbps Data Link Thin Route DCME Slide 13

14. Orion Telecom Networks Inc. 2005 Exchange / Switch E&M VCL-TRLD 6, E&M Channels G.703 Subrate Mux 6 X 9.6Kbps Compressed VF Network Tx / Rx SITE - B Figure # 3 For Application of 2 Wire / 4 Wire E&M Trunks (E&M - E&M) 64 Kbps Data Link Thin Route DCME Slide 14

15. Orion Telecom Networks Inc. 2005 Thin Route, DCME SLC / FXS Interface Module Part #VCL-TR-025 Specifications - Analog Interface (Uncompressed Input) Transmission PerformanceMOS 3.8 Exceeds G.726 @ 32Kbps, G.729 @ 8Kbps and GSM @ 13Kbps Number per card1 Maximum number of Cards / Shelf12 Insertion loss (Nominal)2dB User selectable range for insertion loss1dB to 7dB (Through Dip Switch) Input level minimum-11dB Input level maximum3.2dB Operating voltage-48V dc (Nominal) Line Impedance600ohms 900ohms (Optional on request) Idle Channel Noise  65dB Overload Level+3.14dBm  0.5dB Maximum Loop resistance1200 ohms Ring voltage75Vrms / 86Vrms Ring frequency17Hz / 20Hz / 25Hz / 50Hz Dial pulse speed10pps Thin Route DCME Slide 15

16. Orion Telecom Networks Inc. 2005 Specifications - Digital Interface (Compressed Voice) Number per Card1 Maximum No. of Slots / Shelf12 TypeRS 232 Tx, Rx, Gnd ModeAsynchronous Baud Rate9.6 kbps - Fixed Data Size8bits ParityNone Flow Control None ( Xon / X off ) Stop Bit1 Thin Route DCME Slide 16

17. Orion Telecom Networks Inc. 2005 Thin Route, DCME JNC / FXO Interface Module Part #VCL-TR-030 Specifications - Analog Interface (Uncompressed Input) Transmission PerformanceMOS 3.8 Exceeds G.726 @ 32Kbps, G.729 @ 8Kbps and GSM @ 13Kbps Number per card1 Maximum number of Cards / Shelf12 Insertion loss (Nominal)2dB User selectable range for insertion loss1dB to 7dB (Through Dip Switch) Input level minimum-11dB Input level maximum3.2dB Operating voltage-48V dc (Nominal) Open loop resistance>22 K ohm Closed loop resistanceConstant current sink of 23mA Line Impedance600ohms 900ohms (Optional on request) Idle Channel Noise  65dB Overload Level+3.14dBm   0.5dB Ring voltage detection (min)35Vrms Dial pulse speed10pps Thin Route DCME Slide 17

18. Orion Telecom Networks Inc. 2005 Specifications - Digital Interface (Compressed Voice) Number per Card1 Maximum No. of Slots / Shelf12 TypeRS 232 Tx, Rx, Gnd ModeAsynchronous Baud Rate9.6 kbps - Fixed Data Size8bits ParityNone Flow Control None ( Xon / X off ) Stop Bit1 Thin Route DCME Slide 18

19. Orion Telecom Networks Inc. 2005 Thin Route, DCME, 2 Wire / 4 Wire E&M Trunk Interface Module Part #VCL-TR-035 Specifications - Analog Interface (Uncompressed Input) Transmission PerformanceMOS 3.8 Exceeds G.726 @ 32Kbps, G.729 @ 8Kbps and GSM @ 13Kbps Number per card1 Maximum number of Cards / Shelf12 Performance Characteristics: Between voice frequency portsas per CCITT G.713 Insertion loss (Nominal)2dB Line Impedance600ohms 900ohms (Optional on request) Idle Channel Noise  65dB Overload Level+3.14dBm   0.5dB User selectable range for insertion loss1dB to 7dB (Through Dip Switch) Input level minimum-11dB Input level maximum3.2dB Thin Route DCME Slide 19

20. Orion Telecom Networks Inc. 2005 Specifications - Digital Interface (Compressed Voice) Number per Card1 Maximum No. of Slots / Shelf12 TypeRS 232 Tx, Rx, Gnd ModeAsynchronous Baud Rate9.6 kbps - Fixed Data Size8bits ParityNone Flow Control None ( Xon / X off ) Stop Bit1 Thin Route DCME Slide 20

21. 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 21 Thin Route DCME

22. 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 22 Thin Route DCME