1. VCL-SE IEEE-1588v2 PTP Protected Synchronous Packet-Optical Transport Interface Presentation

2. Valiant Communications Limited – 2009-15 VCL-SE IEEE-1588v2 PTP Protected Synchronous Packet-Optical Transport Interface Carrier Grade Transmission Equipment over Optical / Wireless Links Uses IEEE-1588v2 PTP synchronization technology Provides time-of-day and frequency synchronization to a single central GPS source with 0.5 micro-second (< 500 nanosecond) accuracy. Uplink Network Interfaces (Any 4 user selectable ports) 4x10/100/1000BaseT / 4x1000Base SX/LX (use any 4 interfaces) Less than 4ms latency on all TDM (E1) over IP transmission links. User Side Interfaces 8x10/100BaseT Ethernet Ports (4x10/100BaseT Ethernet Ports with PoE) 8x 100BaseFX Optical Ethernet Ports (SFP) 8x E1/T1 Interfaces 1x IRIG-B outputs 2

3. Valiant Communications Limited – 2009-15 Key Features IEEE-1588v2 Synchronous Ethernet PTP Clock 4 GigE Uplink Ports – Copper, Fiber, Copper + Fiber Gigabit Ethernet Ports. 4 x 10/100/1000BaseT Copper Ports or 4 x 1000BaseFX Optical Fiber Ports (User selectable combination of only 4 Copper or Fiber Ports) IEEE-1588 packet synchronization mechanism provides frequency and time-of-day synchronization for all points of the network to a common, single source. Industry ‘benchmark’ in transmission latency – less than 4ms for E1 Channels and 6ms for T1 Channels in IEEE-1588v2 (PTP Synchronization) versions. Fully managed Layer2 Switches which offer QoS by implementing IEEE 802.1p, 802.1Q VLANs and Differentiated Services (Diffserv) and packet priority classification protocols for traffic management and optimization. 3

4. Valiant Communications Limited – 2009-15 VCL-SE IEEE-1588v2 PTP Protected Synchronous Packet-Optical Transport Interface 4

5. Valiant Communications Limited – 2009-15 Front Panel Description 5 48V DC Power Supply Card LEDs 4 x (Combo) Gigabit Ethernet Port DB-9 Serial COM Port USB Serial COM Port Reset *Optional Ethernet Card

6. Valiant Communications Limited – 2009-15 Back Panel Description External Alarm E1 Interface IRIG-B Output 2MHz Clock Output 1 PPS Input NMEA POE Power Input Bits Clock Input Bits Clock Output Power Supply Input Ground 6

7. Valiant Communications Limited – 2009-15 With IEEE 1588 PTP Synchronization Reduce network latency to under 4ms for E1 Channels and 6ms for T1 Channels Synchronize all cell sites to a common clock (time-of-day) and frequency Frequency synchronize all BTSs and BSCs with the MSC using IEEE-1588 V2 phase synchronized frequency Distribute IEEE-1588v2, Time-of-Day (ToD) across all nodes of the network with 500ns (0.5 micro-second) accuracy Distribute 1 PPS and NMEA information across all nodes of the network. Applications - Cellular / Mobile Frequency synchronization across the entire network with IEEE-1588 V2 phase synchronized frequency Applications – Power and Transportation 7

8. Valiant Communications Limited – 2009-15 Application Diagram 8 Main Optical Link Standby Link to Radio (Ethernet / E1) Main Optical Link Standby Link to Radio (Ethernet / E1) (1+1 Link Protection) 1+1 Power Supply -48V DC (1+1 Link Protection) 8 x TDM (E1 / T1) Input Ports 4 x (Combo) Gigabit Ethernet Port Combo: Optical / Electrical

9. Valiant Communications Limited – 2009-15 9 Application Diagram Main Optical Link Standby Link to Radio (Ethernet / E1) Standby Link to Radio (Ethernet / E1) (1+1 Link Protection) Main Optical Link 1+1 Power Supply -48V DC 1+1 Power Supply -48V DC (1+1 Link Protection)

10. Valiant Communications Limited – 2009-15 Transmission Mediums 10 Packet Optical Transport IP / Ethernet / MPLS Microwave Radio - Ethernet / IP Satellite

11. Valiant Communications Limited – 2009-15 GPS Synchronization (Optional) Inputs PTP 1588v2 Grandmaster 1 PPS + NMEA External 2M Clock Outputs E1 / T1, NTP, IRIG-B, 2 MHz, 2MBits, External Alarm Relay 11

12. Valiant Communications Limited – 2009-15 Solution Highlights: Packet Optical Transport 1+1 Link Protection IEEE-1588v2 PTP Synchronization All Alarms and events time stamped to less than 500 nano seconds accuracy < 4 ms. Latency on TDM (E1 or T1) Switching capacity of 9 Gbps MPLS, MEF, UDP tagging Point to Point, Add-Drop, Star, Tree, Mesh application Fully managed Ethernet Switch (QoS, Rate Limiting, DSCP, 802.1q, 802.1p) Supports Power over Ethernet (PoE) 12

13. Valiant Communications Limited – 2009-15 Uplink / Network Side 4 x Gigabit Optical (SFP) 4 x 10/100/1000BaseT Gigabit Port Options (RJ-45) User Side (Ethernet / IP) Options (2 User Slots) 8 x 10/100 Ethernet Ports (RJ-45) 4 x 10/100 Ethernet Ports (RJ-45) + 4 x Power over Ethernet (PoE) 8 x 10/100 Ethernet Optical (SFP) 1 x Gigabit (1000 Mbps) Optical Port (SFP) or Gigabit (10/100/1000) Electrical Port (RJ-45) (User Configurable any one) 13

14. Valiant Communications Limited – 2009-15 Thank You for your attention For more details visit us at our Website at http://www.valiantcom.com U.K. Valiant Communications (UK) Ltd 1, Acton Hill Mews, 310-328 Uxbridge Road, London W3 9QN, U.K E-mail: gb@valiantcom.comgb@valiantcom.com Website: http://www.valiantcom.comhttp://www.valiantcom.com INDIA Valiant Communications Limited 71/1, Shivaji Marg, New Delhi – 110015 E-mail: mail@valiantcom.commail@valiantcom.com Website: http://www.valiantcom.comhttp://www.valiantcom.com U.S.A. Valcomm Technologies Inc. 4000 Ponce de Leon, Suite 470 Coral Gables, FL 33146, U. S. A E-mail: us@valiantcom.comus@valiantcom.com Website: http://www.valiantcom.comhttp://www.valiantcom.com 14 Revision 3, August 10, 2015