Over 2000.  But it depends on various settings and configurations that can increase or decrease the number of slaves that Sonoma can support.  Consider the following:

1.  If using a Boundary Clock, the Sonoma only interfaces with the network switch Boundary Clock.  In this case the capacity is limited by the Boundary Clock switch.

The Precision Time Protocol (PTP) is a relatively new protocol (compared with NTP).  As such, there are fewer options available for you to use for PTP Slave software.  The options that do exist range from software-only solutions to software with hardware timestamping solutions.  For further information click here.

Yes.  All Sonoma, Meridian, Tycho II, Tempus LX, and Unison Time Servers are capable of operating PTP.  PTP is a relatively low-cost option that can be installed by you at any time.  All that is needed from you is the Ethernet address (MAC) and we can supply a software key and instructions for turning on PTP.  For older products, you may need to upgrade your software first.

PTP Version 2 has been designed to span over a WAN.  However, performance is dependent on the network configuration.  For example, a network switch would need to be configured as a transparent clock or boundary clock in order to realize the superior synchronization capability.  Otherwise, synchronization of PTP becomes equivalent to NTP.

The main difference is in the synchronization accuracy that can be achieved.  With software timestamping as typically implemented (software-only approach), you can see slave synchronization accuracies between 10 and 100 microseconds.  You can achieve this level of accuracy with commonly used network hardware such as standard switches, and computers with software PTP slaves.

The Grandmaster user interface allows you to modify the TTL Value (time-to-live value) in order to accomplish this.  You will also need to modify the TTL Value on your PTP Slave.

Products listed below can be configured as a IEEE-1588/PTP Grandmaster Clock.  Here are the timestamp resolution and accuracy specifications:

Precision Time Protocol (PTP) is a relatively new protocol that was developed to improve the time synchronization accuracy that is obtainable over a Local Area Network (LAN).  Specifications for PTP are defined in the IEEE-1588 standard.  In PTP terminology, the Grandmaster is the distributor of accurate time and the Slave is the receiver of this time.  The Slave synchronizes itself to the Grandmaster.