1. Orion Telecom Networks Inc. 2005 T1 E1 Converters 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 T1 E1 Converter T1 E1 Converter Solution for Data (frame) Voice (Mu Law to A Law) Signaling conversion Available in 19 inch rack mount version. Provides a simple and cost effective method to convert a T1 stream to an E1 stream. Product Overview between a T1 signal and an E1 signal. Slide 2

3. Orion Telecom Networks Inc. 2005 T1 E1 Converter T1 E1 Converter(s) E1 T1 E1 Link T1 to E1 Converter Application Diagram T1 Link T1 E1 Converter(s) for Data (frame) Voice (Mu Law to A Law) Signaling conversion between a T1 signal and an E1 signal. Slide 3

4. Orion Telecom Networks Inc. 2005 T1 E1 Converter Line Rate Line Code Available Time Slots Voice Coding Signaling Framing Clock Electrical Jitter Impedance Connectors E1 Interface E1 (2.048Mbps ± 50 bps) HDB3 1 - 31 Data or 1-30 Voice A Law ITU-T, Q.421 and Q.422 G.704 Internal, Loop timed G.703 G.823 120 Ohms RJ-45 Female or Wire Wrap (both options available) Slide 4

5. Orion Telecom Networks Inc. 2005 T1 E1 Converter Line Rate Line Code Available Time Slots Voice Coding Signaling Framing Clock Electrical Jitter Impedance Connectors T1 (1.544Mbps ± 50 bps) B8ZS, AMI, (selectable) 1 - 24 Voice or 1-23 PRI ISDN Mu Law D4 (Robbed Bit Signaling), E&M wink start D4 Internal, Loop Timed (from E1 clock) Meets ITU-T and ANSI T1 recommendations ITU-T 1.431 100 Ohms RJ-45 Female or Wire Wrap (both options available) T1 Interface Slide 5

6. Orion Telecom Networks Inc. 2005 T1 E1 Converter Rack MountingStandard 19-inch DIN rack Height133.33mm. (3U) Depth260mm. Width 477mm. Slots10 (Upto 10, E1 T1 Converters per 19-inch Shelf) Mechanical Specifications Slide 6

7. Orion Telecom Networks Inc. 2005 T1 E1 Converter Input DC voltage-48 VDC ( nominal ) Range of input-40V to -60V DC Output voltages+5V Input Voltage Reversal ProtectionProvided in the Card Over Current ProtectionProvided in the Card Short Circuit ProtectionProvided in the Card (recovers automatically) Under Voltage< 4.5V Over Voltage5.4V to 5.6V Efficiency at full load>80% Typ. Ripple at full load<5mVrms Spike at full load<50mV Power Consumption2.5W - each E1 T1 Converter. 25W (10 E1 T1 Converters) Temperature0 0 C to 55 0 C Humidity95% RH (non-condensing) CoolingConvection Cooling Power Supply Slide 7

8. 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 T1 E1 Converter Slide 8

9. 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 9 T1 E1 Converter