Orion Telecom Networks Inc VCL-MX ™ 2Mbps E1, Drop-Insert Voice & Data Multiplexer 16810, Avenue of Fountains, Suite # 108, Fountain Hills, AZ 85268, U.S.A. Phone: +1 (480) Fax: +1 (480) Web Site: Slide 1 Updated : November, 2005

Orion Telecom Networks Inc Product Overview Provides wide range of POTS (voice) and digital data services Integrates analog communication equipment with digital E1 interface. Effective CLI (text) and GUI (Graphical User Interface) based "Network Management System”. Remote monitoring and management of the inter-connected systems. Both Inband and Out-Of-Band configuration and monitoring options An extensive set of alarms, for easy maintenance are provided in the system. VCL-MX, E1 Voice & Data Drop-Insert Multiplexer E1 voice and data, Drop-Insert (Add-Drop) Multiplexer Slide 2

Orion Telecom Networks Inc The Multiplexer may be used in Terminal or Drop-Insert (Add-Drop) configuration to provide: Toll Quality Voice services Interconnect LAN (Campus Network) Interconnect Computer Terminals Provide LAN-WAN Interconnectivity Provide Leased Lines on DSL for SOHO Applications VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 3

Orion Telecom Networks Inc Voice Interface Options FXO FXO - ext (gain/attenuation configurable) FXS FXS - ext (gain/attenuation configurable) E&M (2 Wire and 4 Wire) E&M - ext (gain/attenuation configurable) FXS-FXS (Hot-line) VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 4

Orion Telecom Networks Inc Data Interface Options RS232 RS Kbps, co-directional 128 Kbps V.35, n X 64 Kbps V.36, n X 64 Kbps X.21, n X 64 Kbps RS530, n X 64 Kbps 10BaseT - Ethernet Bridge 10BaseT - Router Fractional E1 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 5

Orion Telecom Networks Inc Voice and Data Drop-Insert Multiplexer without In-band Management Interface Voice Interfaces: FXO FXO (ext) FXS FXS (ext) E&M E&M (ext) FXS - Hotline Data Interfaces: RS232 RS485 iDSL G.703 VCL-MX (Version # 1) Available Interfaces: VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 6

Orion Telecom Networks Inc VCL-MX-Version # 1 - Voice and Data Drop-Insert Multiplexer without In-band Management Interface VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 7

Orion Telecom Networks Inc Rear View 19-Inch Shelf 3U high19- Inch Shelf and Backplane VCL-MX-001 Slot 1Power Supply Card VCL-MX-010 Slot 2Ringer Card VCL-MX-040 Slot 3 to 1715 User Configurable voice & As per user requirement data interface(s) Slot 18Control Card1 VCL-MX-015 Core System Composition Descriptions Part No. VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 8

Orion Telecom Networks Inc Voice and Data Drop-Insert Multiplexer with In-band Management Interface (75 Ohms unbalance E1 Impedance - Optional) VCL-MX (Version # 2) Available Interfaces: VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Voice Interfaces: FXO FXO (ext) FXS FXS (ext) E&M E&M (ext) FXS - Hotline Data Interfaces: RS232 RS485 iDSL G.703 Slide 9

Orion Telecom Networks Inc VCL-MX-Version # 2 - Voice and Data Drop-Insert Multiplexer without In-band Management Interface VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 10

Orion Telecom Networks Inc Rear View 19-Inch Shelf 3U high19- Inch Shelf and Backplane VCL-MX-002 Slot 1Power Supply Card VCL-MX-010 Slot 2Ringer Card VCL-MX-040 Slot 3 to 1715 User Configurable voice & As per user requirement data interface(s) Slot 18LAN Card VCL-MX-LAN Slot 19Control Card 1 with In-Band VCL-MX Management Interface Core System Composition Descriptions Part No. VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 11

Orion Telecom Networks Inc VCL-MX (Version # 3) Voice and Data Drop-Insert Multiplexer with In-band Management Interface and “n” X 64 Kbps data options (75 Ohms unbalance E1 Impedance - Optional) Voice Interfaces: FXO FXO (ext) FXS FXS (ext) E&M E&M (ext) FXS - Hotline Data Interfaces: RS232 RS485 iDSL G.703 nX64 Interfaces: V.35 V.36 X.21 RS530 10BaseT Fractional E1 Available Interfaces: VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 12

Orion Telecom Networks Inc VCL-MX-Version # 3 - Voice and Data Drop-Insert Multiplexer with In-band Management Interface and “n” X 64 Kbps data options VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 13

Orion Telecom Networks Inc Rear View 19-Inch Shelf 3U high19- Inch Shelf and Backplane VCL-MX-003 Slot 1Power Supply Card VCL-MX-010 Slot 2Ringer Card VCL-MX-040 Slot 3 to 1210 User Configurable voice & As per user requirement data interface(s) Slot 13 to 164 User Configurable “n” X 64 Kbps As per user requirement interface(s) Slot 17LAN Card VCL-MX-LAN Slot 18 Control Card 1 with In-band VCL-MX Management Core System Composition Descriptions Part No. VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 14

Orion Telecom Networks Inc VCL-MX (Version # 4) Voice and Data Drop-Insert Multiplexer with In-band Management Interface and “n” X 64 Kbps data options (75 Ohms unbalance / 120 Ohms balance E1 Impedance) Available Interfaces: VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Voice Interfaces: FXO FXO (ext) FXS FXS (ext) E&M E&M (ext) FXS - Hotline Data Interfaces: RS232 RS485 iDSL G.703 nX64 Interfaces: V.35 V.36 X.21 RS530 10BaseT Fractional E1 Slide 15

Orion Telecom Networks Inc VCL-MX-Version # 4 - Voice and Data Drop-Insert Multiplexer with In-band Management Interface and “n” X 64 Kbps data options VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 16

Orion Telecom Networks Inc Rear View VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 17

Orion Telecom Networks Inc Inch Shelf 3U high19- Inch Shelf and Backplane VCL-MX-004 Slot 1Power Supply Card VCL-MX-010 Slot 2Ringer Card VCL-MX-040 Slot 3 to 1715 User Configurable voice & data As per user requirement interface(s) Slot 18 Control Card 1 VCL-MX Slot 19 Power Supply Card VCL-MX-010 Slot 20 to 22Three 64 Kbps Dual Channel CardAs per user requirement Slot 23 to 286 User Configurable “n” X 64 Kbps As per user requirement interface(s) Slot 29LAN / Telnet Management Card VCL-MX-LAN Slot 30Control Card 2 VCL-MX-020 Core System Composition Description Part No. Available Interfaces: Voice and Data Interfaces from slot 3 to 17: FXO / FXS / E&M / RS232 / iDSL / G.703 Nx64 Interfaces from Slot 23 to 28: V.35 / V.36 / RS530 / X.21 / 10BaseT / Fractional E1 Framed and un-Framed VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 18

Orion Telecom Networks Inc Features Voice and Digital Data services. Any combination ("mix-n-match") of Voice and Digital Data services deployed from a single VCL-MX "Smart Shelf". Drop and Insert applications. Digital Data option may be used for internet access or video conferencing application. Wireless applications including Cellular Networks. Digital Microwave Radio. SCADA applications. Frame Relay circuit termination. Powerful Network Management System for monitoring and network control. Compliance with all relevant ITU-T (CCITT) recommendations. 3U high, compact construction. VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 19

Orion Telecom Networks Inc Highlights Field upgradable to provide voice, data or both services. Flexibility on use of transmission medium - copper, fiber, or wireless. Choice of Interfaces for Data Applications. RS-232, PC Interface "Network Control And Management Software". In-band system configuration and management interface. Out-of-band system configuration and management interface through 10BaseT Terminal (Optional) Channel assignment independent of slot position in the subrack. Extensive set of alarms. User Selectable Internal or Loop-Timed clock options VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 20

Orion Telecom Networks Inc Transmission Mediums Copper Optical Fiber Wireless VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 21

Orion Telecom Networks Inc Applications of VCL-MX POTS (voice), digital data, or real-time video conferencing services (V.35, V.36, X.21, RS530, 10BaseT Router, 10 BaseT Ethernet Bridge) high-speed digital data interface options allows video conferencing channel of up to 1984 Kbps). Junction Mux - for digital interconnection of analog exchanges. Drop & Insert applications. Wireless network applications. High-speed data ports for digital communication links providing Leased Lines access to Internet Service Provider (ISPs) with speeds ranging from 64Kbps up to 1984 Kbps digital data interface options. Micro-Cellular infrastructure applications for providing cell-switch connectivity. Wide area networking. Internet Access over POTS lines - All POTS interfaces 64Kbps and support V.34 (33.6Kbps) dial-up modems. VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 22

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Applications Application # 01 Slide 23

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Application # 02 Slide 24

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Application # 03 Application # 04 Slide 25

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Application # 05 Slide 26

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Application # 06 Slide 27

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Application # 07 Slide 28

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Application # 08 Slide 29

Orion Telecom Networks Inc Continue... VCL-MX, E1 Voice & Data Drop-Insert Multiplexer E1 Interface (Main Link) Technical Specifications Number of Interfaces2 Conformity (Electrical)G.703 Frame StructureAs per ITU (CCITT) G.704 SignalingChannel Associated Signaling PCM Sampling Rate8000 Samples / sec Encoding LawA Law as per ITU (CCITT) Bit Rate2048 Kbps ± 50 ppm CodeHDB3 Nominal Impedance120  balanced / 75  unbalanced (75  option) Peak Voltage of a mark For 120  Balanced interface3.0 V ± 0.3 V 75  Unbalanced interface2.37 V ± V Slide 30

Orion Telecom Networks Inc Continued from E1 Interface (Main Link)... VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Peak Voltage of a space for 120  Balanced interface0 V ± 0.3 V 75  Unbalanced interface0V ± V Nominal Pulse Width244 ns Pulse Maskas per ITU (CCITT) Rec. G.703 Output Jitter< 0.05 UI (in the frequency range of 20Hz to 100 KHz) Permissible Attenuation6 dB at 1 MHz Return Loss at: 51.2 KHz to KHz> 12dB KHz to 2048KHz> 18dB 2048KHz to 3072 KHz> 14dB Jitter ToleranceAs per ITU (CCITT) G.823 Loss and recovery of frame alignment :As per clause 3 of ITU (CCITT) G.732 Loss and recovery of multiframe alignment : As per clause 5.2 of ITU (CCITT) G.732 Slide 31

Orion Telecom Networks Inc Number of Channels per Card2 Interface TypeFXO,FXS, 2W / 4W E&M Maximum Number of Channels30 Transmission performanceFully Compliant to ITU (CCITT) G.712 specification Line Impedance600  (900  optional) Voice Channel Frequency300Hz-3400Hz Insertion Loss-2.0dB Nominal (User adjustable) Idle Channel Noise  - 65dB Return Loss300Hz - 600Hz - 12dB 600Hz Hz - 15dB Longitudinal Balance  46dB between 300Hz to 3400Hz Ring Frequency25 Hz (20 Hz, Optional) Ring Voltage  75 volts RMS into a load of 5 R.E.N. with a 0.30 Erlang traffic pattern Subscriber Loop Current  23mA into a subscriber loop of 1000 ohms Overload Level+3.14dBm ± 0.5dBm Battery ReversalAll channels Dial Pulse Speed8 -12 pps - Pulse Dialing / DTMF Dialing 2 Wire / 4 Wire - Voice Frequency Interface(s) VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 32

Orion Telecom Networks Inc Low Speed Data Interface RS232 InterfaceRS232 Number of Interfaces per Card2 Maximum Number30 ConformityRS232 ModeAsynchronous Bit Rate50 Kbps to 19.2 Kbps User InterfaceDCE Character Length5 / 6 / 7 / 8 (Auto-Select) Stop Bits1 / 1.5 / 2 (Auto-Select) ParityEven / Odd / 0’s / 1’s / none (Auto-Select) 64kbps, Synchronous Data Interface 64 Kbps Number of Interfaces per Card2 Maximum Number30, V.35, 64Kbits / sec. Interface ConformityTo (CCITT) Rec. G.703 ModeSynchronous, Co-directional Bit Rate64Kbps VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 33

Orion Telecom Networks Inc Sub-Rate Multiplexer - Optional Extra Optional: To be used with 64 Kbps G.703 co-directional data interface card. Number of Interfaces per 64 Kbps channel6 Interface TypeRS232 ModeAsynchronous Bit Rate9.6 Kbps, 8 bits 1 stop bit ParityNone BRI ISDN 2B+D "U" InterfaceMeets ANSI T requirements Line Rate160 Kbits/s Frame Format2B+D as per CCITT Rec Line Code2B1Q as per CCITT Rec.G.961 Accepted Line Attenuation42dB at 40 Khz Pulse ShapeAs per CCITT Rec.G.961 Multiplexer EmulationLT Emulation / NT Emulation (User Selectable) Impedance135 Ohms at 40KHz VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 34

Orion Telecom Networks Inc IDSL - ISDN DSL "U" InterfaceMeets ANSI T requirements Line Rate160 Kbits/s Frame Format2B as per CCITT Rec Line Code2B1Q as per CCITT Rec.G.961 Accepted Line Attenuation42dB at 40 Khz Pulse ShapeAs per CCITT Rec.G.961 Multiplexer EmulationLT Emulation Customer Premises EquipmentNT Emulation Impedance135 Ohms at 40KHz InterfaceV.35 Number of Interfaces per Card 1, (”N” x 64KBits/sec. per Card) Bandwidth(”N” x 64 Kbits / sec. Interface maximum value of “N” =30) - User Selectable ConformityV.35 ModeSynchronous Bit Rate64 Kbps to 1984 Kbps User InterfaceDCE High Speed Synchronous “n X 64” Data Interface Type: V.35 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 35

Orion Telecom Networks Inc InterfaceV.36 Number of Interfaces per Card 1, (”N” x 64KBits/sec. per Card) Bandwidth(”N” x 64 Kbits / sec. Interface maximum value of “N” =30) - User Selectable ConformityV.36 ModeSynchronous Bit Rate64 Kbps to 1984 Kbps User InterfaceDCE High Speed Synchronous “n X 64” Data Interface Type: V.36 Interface X.21 Number of Interfaces per Card 1, (”N” x 64KBits/sec. per Card) Bandwidth(”N” x 64 Kbits / sec. Interface maximum value of “N” =30) - User Selectable ConformityX.21 ModeSynchronous Bit Rate64 Kbps to 1984 Kbps User InterfaceDCE High Speed Synchronous “n X 64” Data Interface Type: X.21 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 36

Orion Telecom Networks Inc InterfaceRS530 Number of Interfaces per Card 1, (”N” x 64KBits/sec. per Card) Bandwidth(”N” x 64 Kbits / sec. Interface maximum value of “N” =30) - User Selectable ConformityRS530 ModeSynchronous Bit Rate64 Kbps to 1984 Kbps User InterfaceDCE High Speed Synchronous “n X 64” Data Interface Type: RS530 Interface10BaseT (Bridge) Number of Interfaces per Card 1, (”N” x 64KBits/sec. per Card) Bandwidth(”N” x 64 Kbits / sec. Interface maximum value of “N” =30) - User Selectable Conformity10BaseT Ethernet Bridge ModeSynchronous Bit Rate64 Kbps to 1984 Kbps User Interface10BaseT High Speed Synchronous “n X 64” Data Interface Type: 10BaseT Ethernet Bridge VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 37

Orion Telecom Networks Inc Interface10BaseT (Router) Number of Interfaces per Card 1, (”N x 64” KBits/sec. per Card) Bandwidth(”N” x 64 Kbits / sec. Interface maximum value of “N” =30) - User Selectable IP routingRIP-I, RIP-II, static routing, IP filters, BootP client and relay, DHCP relay IPQoSBandwidth management (CBR, VBR), Priortization (6 levels), RTP auto detection, DiffServ/TOS support Bandwidth Optimization SW Compression (optional), MLPPP and Bandwidth on Demand, Connection on Demand and IPX spoofing Interoperability PPP Supported RFCs 1058, 1213, 1315, 1332, 1334, 1389, 1471, 1472, 1473, 1474, 1490, 1493, 1519, 1542,1573, 1604, 1631, 1638, 1661, 1662, 1722, 1723, 1724, 1812, 1850, 1962, 1974, 1990 High Speed Synchronous “n X 64” Data Interface Type: 10BaseT Ethernet Router VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Timing OptionsInternal Clock, Loop-Timed Clock Synchronization SourcesInternal Clock, span clock timing derived from incoming HDB3 links (Loop Timed) Default OptionInternal Clock Clock Slide 38

Orion Telecom Networks Inc Management Interface Local Management Interface RS232, 9.6 Kbps CLI (text) based Interface, Hyper Terminal (VT-100 Emulation). In-band Management Interface for Remote Terminals RS232, 9.6 Kbps CLI (text) based Interface, Hyper Terminal (VT-100 Emulation). Out-of-Band Management Interface - Optional 10 / 100 BaseT - User Assigned IP Address Windows based GUI (Graphical User Interface) VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Temperature and Humidity0°C to + 50°C, 90% R.H. (Non Condensing) Altitudeupto 9,000 feet Environmental Slide 39

Orion Telecom Networks Inc Power Supply Input DC voltage-48V DC ( nominal ) Range of input-40V to -60V DC Output voltages+5V, -5V, filtered -48V ( for term. cards) Full Load Output Current8A at +5V, 0.5A at -5V Input Voltage Reversal ProtectionProvided in the Card Over Current Protection10A for +5V, 1.0A for -5V Short Circuit ProtectionCurrent limit - 6A. Recovers on removal of short Efficiency at full load>86% Ripple at full load<5mVrms Spike at full load<50mV Power Consumption VCL-MX (Version # 1)24 watt (with all 30 Voice Circuits) VCL-MX (Version # 2)25 watt (with all 30 Voice Circuits) VCL-MX (Version # 3)25 watt (with all Voice & Data Circuits) VCL-MX (Version # 4)35 watt (with all Voice & Data Circuits) VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Slide 40

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Orion’s Products Digital Access Cross Connects - E1 / T1, E3, DS3, 10/100 BaseT Ethernet Groomers (Hi-Z Non-intrusive Hi-Impedance Monitoring) 1+1 APS (Automatic Protection Switching) Echo Canceller & Voice Quality Enhancement Solutions - E1, T1, DS3 and STM-1 E1 Drop-Insert (Add-Drop) Voice and Data Multiplexers E1, T1, E3, DS3, Ethernet Converters STM-1 Add Drop Multiplexer with Ethernet GSM Gateways - E1/T1 E1 PRI ISDN (Euro ISDN) Q.931 Multiplexers Channel Banks E2 (4 E1), 2/34 Mbps PDH Multiplexer, 34 Mbps OLTE Remote Site Monitoring Equipment Slide 41

Orion Telecom Networks Inc VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Thank you for your attention For more details visit us at our Web Site at , Avenue of Fountains, Suite # 108, Fountain Hills, AZ 85268, U.S.A. Phone: +1 (480) Fax: +1 (480) Slide 42