1. PTP SOLUTIONS: Using PTP as a backup to GPS
SALES MEETING 2018

2. WHAT IS PTP?
Precise Time Protocol used to synchronize clocks throughout a network.
The Grandmaster (GM) “reference clock” sends a series of time- stamped messages to slaves
Slaves receive the messages, and eliminate the round-trip delay by synchronizing to the GM
Frequency/Time-of-Day/Phase is recovered from the accurate time of day reference from the GM
Transparent Clocks (TC) measures & adjusts the delay
Boundary Clocks (BC) can receive PTP as a reference, while providing GM functionality downstream to other clients.

3. PTP: GNSS and PTP

4. PTP network

5. NTP vs. PTP NTP PTP V2 supports LANs and WANs
Has been designed for public networks, can be used across WANs
V2 supports LANs and WANs
Single Grandmaster sends time to one or more slave clocks in a multicast mode
NTP client regularly polls one or more NTP servers
Built in redundancy thru multiple NTP servers
V2 supports multiple clock sources running best master selection algorithm
Software based and assumes symmetric networks. Non-deterministic delays contribute to timing inaccuracy
Hardware based, supports assymmetric networks, APTS (assisted partial timing support)
On path support non existent
Not required, but available thru transparent and boundary clocks

6. Why PTP matters
High accuracy time, phase and frequency transfer via Ethernet
Saves $$$$
Synchronization uses same channels as data
No additional cable for timing (i.e. twisted pair or coax)
Common media type, Ethernet infrastructure
No expensive GPS antennas

7. PTP deployment

8. PTP offering: OSA products 5401 Sync Plug product

9. Grandmaster, Boundary Clock, Slave Clocks
5401 Sync plug
Grandmaster, Boundary Clock, Slave Clocks
5401 Syncplug
Syncplug™ technology for highly accurate timing distribution with smallest footprint. Compatible with SFP electrical MSA
Built-in GNSS receiver supporting fully-featured PRTC and IEEE (PTP) grandmaster
Easily plugs into hosting devices. No additional power or space is required
Robust design with local Stratum 3E oscillator and Sync-E input; fallback in case of GNSS outage

10. OSA 5410/5420 “All in One”, cost effective Sync Toolbox
Sync Delivery using 1588 v2 Telecom Slave/ Boundary/ Master Clocks/ GPS /GNSS / Sync E/ BITS
Sync Assurance using Active/Passive probing and monitoring of Sync (Sync SLA, network PDV)
Supports APTS, back up to GPS/GNSS

11. OSA 5410/5420
Built-in GNSS receiver enable PRTC/PRC & Grandmaster Clock functionalities
Brings precise IEEE 1588v2 PTP frequency and phase synchronization to radio access networks
Syncjack™ technology for timing distribution, monitoring and testing
Extended holdover performance including high-end quartz and rubidium oscillator options
Configurable to operate in Grandmaster, APTS, Boundary and Slave Clock modes

12. Syncjack technology and verifying PTP
Software feature that measures and reports the status/state of the sync network
Embedded in all ADVA Synchronization products
Analogous to Performance Monitor and Bit Error Rate in traditional networks
Unique Differentiator From Competition

13. PTP Network Probe Statistics and Results
Packet Counters (arrived, lost)
PD (Path Delay) – min, max, avg., forward only
MPD (Mean Path Delay) – min, max, avg., both directions
RPDV (Residual Path Delay Variation) – min, avg., both directions (based on observed Delay Floor); Current Value and Histogram
Network Usability (based on G FPP); Current Value and Histogram

14. PTP Offering: On Time Networks
Grandmaster, Boundary Clock, Transparent Clock, Slave Clocks
PTP 8080, PTP 8020
PTP v1 or v2 Grand Master Clock
PTP v1 or v2 Transparent Clock
PTP v1 or v2 Slave Clock
Combined NTP client and PTP Boundary Clock
PTP Several protocols
Built-in GPS receiver (GMC variant) with time accuracy to absolute time < 50ns (with GPS lock)

15. PTP Offering: Brandywine PTP80 GMC
PTP 80 Grandmaster
Precision Time Protocol (PTP) to IEEE-1588 v2
Multiple PTP80’s can be utilized for load sharing resilience and increased support
GPS input source with multiple alternative inputs available
Internal disciplined oscillator continues to provide stability if input source interrupted
Rubidium or Quartz Oscillators
Choice of auxiliary outputs include 1PPS & 10MHz, E1/T1 and optional IRIG-B
OEM Board design available

16. PTP Offering: Brandywine PTP8 Slave
PTP 8 Slave/Client
Standalone IEEE1588v2 PTP Client
Precision timing circuits ensure stability In event of synchronization signal interruption
Integrated Web Server
Multiple Outputs
1PPS, 10 MHz, TOD, NTP
Time of day (TOD) is provided for support Of legacy equipment using IRIG B, RS232, RS422 And RS 485
OEM Board design available
Shelf or Rackmount Versions Available

17. Timing never sleeps