1. Orion Telecom Networks Inc. 2005 VCL-E3 Multiplexer 2/34 PDH Multiplexer 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 Single - card implementation Plug and Play Modular 2Mbps transmission units Standard CCITT (ITU-T) compliant interfaces Monitoring and control by CLI (Command Line Interface) TCP/IP Remote Access for monitoring alarms and management Extensive alarms and status indication facility Service bit monitoring and insertion Operates on nominal -48V DC input Distributed on-board power supply Microprocessor controlled with powerful diagnostic facilities for both remote and local systems Local and remote loopback facility for 34Mbps stream Stored program controlled Highly reliable and compact FEATURES & HIGHLIGHTS VCL-E3 2/34 Multiplexer Slide 2

3. Orion Telecom Networks Inc. 2005 FRONT PANEL VIEW OF VCL-E3 MULTIPLEXER The front panel LEDs provide the following indications: L1 - E3 LOS L2- E3 Sync / Alarm L3- E3 BER L4- E3 CLK FAULT L5- E3 REMOTE ALARM L6- E3 AIS ALARM RJ-45 "LAN Port” L7- E3 TX FAULT L8- E1 LOS L9- ST ERROR L10-"LAN ON" L11- Positive 5V present L12- Negative 48V input present SW1"LAN ON / OFF" Toggle Switch SW2 LAN Reset Switch VCL-E3 2/34 Multiplexer Slide 3

4. Orion Telecom Networks Inc. 2005 VCL-E3 Multiplexer Application 1 VCL-E3 2/34 Multiplexer Slide 4

5. Orion Telecom Networks Inc. 2005 VCL-E3 Multiplexer Application 2 VCL-E3 2/34 Multiplexer Slide 5

6. Orion Telecom Networks Inc. 2005 VCL-E3 Multiplexer Application 3 VCL-E3 2/34 Multiplexer Slide 6

7. Orion Telecom Networks Inc. 2005 Front View of Shelf VCL-E3 2/34 Multiplexer Slide 7

8. Orion Telecom Networks Inc. 2005 BACK PANEL of E3, 2/34Mbps Multiplexer RJ-45 Version VCL-E3 2/34 Multiplexer 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 Connectivityvia spinner type connectors Cable75  unbalanced Permissible attenuation12dB at 17184kHz 34Mbps, third order Interface Number16 Nominal bit rate2048kbps Bit rate tolerance ±50ppm Line codeHDB3 Frame structureas per G.704 Interfacesas per G.703 ConnectivityRJ-45 (Female) Cable120  balanced Permissible attenuation6dB at 1024 kHz 2Mbps primary rate interface VCL-E3 2/34 Multiplexer Continue.. Slide 9

10. Orion Telecom Networks Inc. 2005 NMS (with Telnet) xPort Specifications VCL-E3 2/34 Multiplexer Network InterfaceRJ-45 Ethernet 10BaseT or 100BaseT-TX (auto sensing) CompatibilityEthernet Version 2.0 IEEE802.3 Protocols SupportedARP, UDP/IP, TCP/IP, Telnet, ICMP, SNMP, DHCP, BOOTP, TFTP, Auto IP, SMTP and HTTP LEDs10Base-T & 100Base-TX Activity, Full/half duplex. ManagementInternal web server, SNMP (read only), Serial login, Telnet login EMI ComplianceRadiated & conducted emissions - complies with Class B limits of EN 55022:1998 Direct & Indirect ESD - complies with EN55024:1998 RF Electromagnetic Field Immunity - complies with EN 55024:1998 Electrical Fast Transient/Burst Immunity - complies with EN55024:1998 Power Frequency Magnetic Field Immunity - complies with EN55024:1998 RF Common Mode Conducted Susceptibility - complies with EN55024:1998 Power Consumption: Power Consumption 7.20 Watt Slide 10

11. Orion Telecom Networks Inc. 2005 VCL-E3 2/34 Multiplexer Slide 11 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

12. Orion Telecom Networks Inc. 2005 VCL-E3 2/34 Multiplexer Slide 12 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