Slide 1Comarra Limited - 2006Slide 1 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer COMARRA Telecom Transmission Solutions VCL-MX TM 2Mbps E1, Drop-Insert.

Comarra Limited - 2006Slide 1 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer COMARRA Telecom Transmission Solutions VCL-MX TM 2Mbps E1, Drop-Insert Voice & Data Multiplexer

Comarra Limited - 2006Slide 2 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Product Overview E1 voice and data, Drop-Insert (Add-Drop) Multiplexer 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.

Comarra Limited - 2006Slide 3 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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

Comarra Limited - 2006Slide 4 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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) Voice Interface Options

Comarra Limited - 2006Slide 5 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer RS232 RS485 G.703 @ 64 Kbps, co-directional IDSL @ 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 Analog I/O Card Digital I/O Card Universal Data Interface Card Data Interface Options

Comarra Limited - 2006Slide 6 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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:

Comarra Limited - 2006Slide 7 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer VCL-MX-Version # 1 - Voice and Data Drop-Insert Multiplexer without In-band Management Interface

Comarra Limited - 2006Slide 8 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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. Rear View

Comarra Limited - 2006Slide 9 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Voice and Data Drop-Insert Multiplexer with In-band Management Interface ( 75 Ohms unbalance E1 Impedance - Optional) VCL-MX (Version # 2) Available Interfaces: Voice Interfaces: FXO FXO (ext) FXS FXS (ext) E&M E&M (ext) FXS - Hotline Data Interfaces: RS232 RS485 iDSL G.703

Comarra Limited - 2006Slide 10 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer VCL-MX-Version # 2 - Voice and Data Drop-Insert Multiplexer without In-band Management Interface

Comarra Limited - 2006Slide 11 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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-015-2 Management Interface Core System Composition Descriptions Part No. Rear View

Comarra Limited - 2006Slide 12 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 Universal Data Interface Card Available Interfaces:

Comarra Limited - 2006Slide 13 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer VCL-MX-Version # 3 - Voice and Data Drop-Insert Multiplexer with In-band Management Interface and “n” X 64 Kbps data options

Comarra Limited - 2006Slide 14 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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-015-3 Management Core System Composition Descriptions Part No. Rear View

Comarra Limited - 2006Slide 15 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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: 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 Universal Data Interface Card

Comarra Limited - 2006Slide 16 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer VCL-MX-Version # 4 - Voice and Data Drop-Insert Multiplexer with In-band Management Interface and “n” X 64 Kbps data options

Comarra Limited - 2006Slide 17 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Rear View

Comarra Limited - 2006Slide 18 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 19-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-015-4 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. 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 / Analog I/O Card / Digital I/O Card / Universal Data Interface Card Available Interfaces

Comarra Limited - 2006Slide 19 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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. 3U (Version 1, Version 2, Version 3), 6U (Version 4) high, compact construction. Features

Comarra Limited - 2006Slide 20 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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. RS232, 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 Highlights

Comarra Limited - 2006Slide 21 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Copper Optical Fiber Wireless Transmission Mediums

Comarra Limited - 2006Slide 22 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 point-to-point networks solutions for providing a 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 operate @ 64Kbps and support V.34 (33.6Kbps) dial-up modems. Applications of VCL-MX

Comarra Limited - 2006Slide 23 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Application # 01 Applications

Comarra Limited - 2006Slide 31 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Continue... E1 Interface (Main Link) 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 ± 0.237 V Technical Specifications

Comarra Limited - 2006Slide 32 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Continued from E1 Interface (Main Link)... Peak Voltage of a space for 120  Balanced interface0V ± 0.3 V 75  Unbalanced interface0V ± 0.237 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 102.4 KHz> 12dB 102.4 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 Technical Specifications

Comarra Limited - 2006Slide 33 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 - 3400Hz - 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) Technical Specifications

Comarra Limited - 2006Slide 34 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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) Low Speed Data Interface RS232 / 485 InterfaceRS232 / 485 Number of Interfaces per Card2 Maximum Number30 ConformityRS232 / 485 ModeAsynchronous Bit Rate50 Kbps to 19.2 Kbps Technical Specifications

Comarra Limited - 2006Slide 35 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer G.703 @ 64kbps, Synchronous Data Interface InterfaceG.703 @ 64 Kbps Number of Interfaces per Card2 Maximum Number30, G.703, 64Kbits / sec. Interface ConformityTo (CCITT) Rec. G.703 ModeSynchronous, Co-directional Bit Rate64Kbps Low Speed Data Interface RS232 / 485 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) Technical Specifications

Comarra Limited - 2006Slide 36 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Digital I/O’s - Type I Number of Digital I/O’s per 64 Kbps time-slots /8 Digital In/8 Digital Out/ per Interface Card(Logic High / Low) Interfaces Digital Drivers (current source type) 8 Max Source current100 mA External Ref Voltage Range5 Volts to 30 Volts DC External Reference VoltageRequired Minimum Load Resistance @ 5V50R Minimum Load Resistance @ 30V300R Digital Sensor (current sink type)8 Maximum sink current30mA Voltage Range 5 Volts External Groung ReferenceRequired Description: This interface Card provides 8 digital I/O’s which may be used to either extend Digital I/O’s (logic high / low) signals between any two E1 Multiplexers, or operate switches remotely (using logic high / low) signals between any two multiplexers. Drivers / Sense Logic operates using External Voltage and Ground references). Digital I/O Interface Card (EPCB-1419) Technical Specifications

Comarra Limited - 2006Slide 37 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer OR Digital I/O’s - Type Il Digital Drivers (Current sink type)8 Maximum sink current100mA Voltage Range5 Volts to 30 Volts DC External Ground Reference Required Digital Sensor (current source type)8 Maximum sink current30mA Voltage Range 5 Volts to 30 Volts DC External Groung ReferenceRequired Technical Specifications

Comarra Limited - 2006Slide 38 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Analog I/O Interface Card (EPCB-1420) Description: This interface Card provides 8 Analog I/O’s which may be used to extend either Dry Relay Contacts (Relay Normally-Open or Relay Normally-Close), or operate switches remotely (using 2A Dry Relay Contacts) between any two Multiplexers using a 64 Kbps time-slot. The Dry Relay Contacts are rated at maximum 2 Amps, 30 Volts DC. Relay Specifications (Drivers) Maximum Number of Relay Ports8 Maximum Switching Power60 W Maximum Switching Voltage30 VDC Maximum Switching Current2 Amps Typical Number of Operation> million Dry Contacts Sensors: Maximum Number of Dry Contact Sensors8 Maximum Current30 mA Typical Current30 mA Reference Source Voltage3.3 Volts Technical Specifications

Comarra Limited - 2006Slide 39 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 T1.601-1992 requirements Line Rate160 Kbits/s Frame Format2B+D as per CCITT Rec.1.430 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 Technical Specifications

Comarra Limited - 2006Slide 40 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer iDSL - ISDN DSL "U" InterfaceMeets ANSI T1.601-1992 requirements Line Rate160 Kbits/s Frame Format2B as per CCITT Rec.1.430 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 Technical Specifications

Comarra Limited - 2006Slide 41 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 Technical Specifications

Comarra Limited - 2006Slide 42 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 Technical Specifications

Comarra Limited - 2006Slide 43 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 Technical Specifications

Comarra Limited - 2006Slide 44 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 Technical Specifications

Comarra Limited - 2006Slide 45 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer InterfaceV.35, V.36, X.21, RS422, RS530 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 ConformityUniversal-user Configurable as above ModeSynchronous Bit Rate64 Kbps to 1984 Kbps User InterfaceDCE / DTE Universal Data Interfaced: High Speed Synchronous “n X 64” Data Interface Type Technical Specifications

Comarra Limited - 2006Slide 46 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 Technical Specifications

Comarra Limited - 2006Slide 47 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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 Technical Specifications

Comarra Limited - 2006Slide 48 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Management Interface Local Management Interface RS232, operating @ 9.6 Kbps CLI (text) based Interface, Hyper Terminal (VT-100 Emulation). In-band Management Interface for Remote Terminals RS232, operating @ 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) Temperature and Humidity0°C to + 50°C, 90% R.H. (Non Condensing) Altitudeupto 9,000 feet Environmental Technical Specifications Timing OptionsInternal Clock, Loop-Timed Clock Synchronization SourcesInternal Clock, span clock timing derived from incoming HDB3 links (Loop Timed) Default OptionInternal Clock Clock

Comarra Limited - 2006Slide 49 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer 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) Technical Specifications

Comarra Limited - 2006Slide 50 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Digital Access Cross Connects - E1 / T1, E3, DS3, 10/100 BaseT Ethernet Groomers (Hi-Z Non-intrusive Hi-Impedance Monitoring) Echo Canceller & Voice Quality Enhancement Solutions - E1, T1, DS3 and STM-1 E1 Drop-Insert (Add-Drop) Voice and Data Multiplexers 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 VoIP SS7 and C7 Solutions Nextone Softwitch CISCO Gateways Quintum Tenor VOIP Gateways Networking & Engineering Solutions. Hosted Solutions. Comarra’s Products

Comarra Limited - 2006Slide 51 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer Thank you for your attention For more details visit us at our Website at http://www.comarra.co.uk 123 Springvale Road, Winchester Hants SO23 7LE UK Phone: +44 (0) 20 7871 9524 E-mail: info@comarra.co.uk Web Site: http://www.comarra.co.ukinfo@comarra.co.ukhttp://www.comarra.co.uk

Slide 1Comarra Limited - 2006Slide 1 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer COMARRA Telecom Transmission Solutions VCL-MX TM 2Mbps E1, Drop-Insert.

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Slide 1Comarra Limited - 2006Slide 1 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer COMARRA Telecom Transmission Solutions VCL-MX TM 2Mbps E1, Drop-Insert.

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Presentation on theme: "Slide 1Comarra Limited - 2006Slide 1 VCL-MX, E1 Voice & Data Drop-Insert Multiplexer COMARRA Telecom Transmission Solutions VCL-MX TM 2Mbps E1, Drop-Insert."— Presentation transcript:

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