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

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

Features and Highlights

  • 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.

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)

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)

Transmission Mediums

  • Packet Optical Transport
  • IP / Ethernet / MPLS
  • Microwave Radio - Ethernet / IP
  • Satellite

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


Applications - Cellular / Mobile

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 – Power and Transportation

  • Frequency synchronization across the entire network with IEEE-1588 V2 phase synchronized frequency

Applications Diagrams

VCL-SE IEEE-1588v2 PTP Protected Synchronous
Packet Optical Transport Solution
Block Diagram

Packet Optical Transport Solution