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NETWORK CLOCKS: Cloudberry CM-1600-NTS Series

Product Description

Cloudberry CM-1600-NTS series, Network Time Server, PTP or NTP protocol with 8 Port Managed Gigabit Ethernet Capability

The CM1608FC4-NTS series

 The Cloudberry CM-1600 NTS is a GPS Network Time Server (NTS) for NTP or PTP IEEE 1588 that provides secure, accurate and reliable time synchronization for networks and offers integrated fully managed switch capabilities for 8 (10/100/1000BASE) Gigabit Ethernet ports. The CM-1600 NTS can be used for data centers, test facilities, military installations, federal or municipal agencies, financial services, technology firms, and many other enterprises which need precision timing to support their network operations.

The CM-1600 NTS provides exact time over Ethernet either based on the well-established NTP/SNTP protocol or PTP according to IEEE 1588 Std 2008. It not only provides NTP and PTP timing capabilities, but also a variety of other time codes and signals, such as GPS emulation and IRIG-B. The unit also provides backwards compatibility for older timing systems. Such interfaces are normally provided on the network boundaries integrated on relevant SNTP clients or PTP Slave Clocks platforms.

The CM-1600 NTS is used for applications that require reliable timing to accurately synchronize networks, systems, and devices and to log events with legally traceable time. The CM-1600 NTS Series offers a broad portfolio of features, including network master clocks (NTP or PTP), monitoring and management capabilities, and a complete software package to deliver high performance timing for network applications and devices. The CM-1600 NTS is easy-to-install and is fully configurable to customize its features, interfaces, ports and protocols to your needs. These features include remote login and file transfer capabilities, which provide the utmost security when using industry standard interfaces. A full-suite of network protocols includes SNMP capability, support for enterprise directory servers to authenticate users, internal and external logging and monitoring of error messages through Syslog, DHCP for installation convenience, and IPv4.

The CM-1600 NTS is a reliable and accurate NTP and PTP Grand Master Clock fulfilling the IEEE 1588 Std 2002 (v1) and IEEE 1588 Std 2008 (v2). The CM-1600 NTS contains a built-in state-of-the-art GPS receiver that is used as the time base for the GMC clock. The CM-1600 can operate with 2-step clock modes and either E2E or P2P as the delay mechanism. The platform maximizes PTP performance since all critical PTP functions are implemented in hardware. The switch functionality in the CM-1600 NTS series offer full management based on HTTP, telnet, CLI or SNMP. Network Redundancy is achieved based on the OnTime-Ring- or MSTP/RSTP/STP (IEEE 802.1s/w/D) protocol. The unit offers a wide operating temperature range: [-40°F to 158°F] / [-40°C to 70°C].

Key Features

The Cloudberry CM-1600 Network Time Server Series offers time synchronization support for data communication networks and 8 Port Gigabit Ethernet switch capability.

Time Distribution The CM-1600-NTS is available in different versions, providing reliable and accurate (< 20 nanosecond) PTP Grand Master Clock and Transparent/Slave Clock function according to IEEE 1588 Std 2002 (PTPv1) or IEEE 1588 Std 2008 (PTPv2) standards or with NTP/SNTP Server support, providing mid-level accuracy of 0.5ms or high-level accuracy of sub-us
The CM-1600-NTS with PTP Grand Master Clock capability contains a built-in high accuracy GPS receiver.

The CM-1600-NTS series supports all relevant IEEE Ethernet standards. Interoperability with other PTP and NTP devices are ensured based on extensive testing.

Version Translation

The CM-1600-NTS series with its unique embedded PTP version translator feature, allows Slave Clocks of both PTPv1 and PTPv2 to co-exist in the same network.


The CM-1600-NTS Series offer full management based on HTTP, telnet, CLI or SNMP v1/v2/v3.

Version Translation

The CM-1600-NTS Series offers advanced filtering capabilities. Multicast filters can be set on the switch either based on IGMP snooping or by manual configuration of static filters. Layer 4 filtering can be done based on UDP destination or source port numbers of UDP/IP packets.

IRIG-B The CM-1600-NTS Series with Grand Master Clock capability provides GPS emulation (NMEA and PPS), IRIG-B 002 output
VLAN 802.1Q Port based VLAN (static) or dynamic VLAN according to IEEE802.1Q are supported.
Security Security according to IEEE802.1x is supported.

Product Versions

Cloudberry CM-1608FC4-NTS Series products

CM-1608FC4-NTS-(S)NTP-SERV NTS with (S)NTP Server support. Providing mid-level accuracy of 0.5ms
CM-1608FC4-NTS-NTP-SERV NTS with NTP Server support. Providing high-level accuracy of sub-us
CM-1608FC4-NTS-PTP-GMC NTS with NTP Server or PTP GMC or TC/SC support
CM-1608FC4-NTS-PTP-TC NTS with TC/SC support
CM-1608FC4-NTS-NTPcli-PTP NTS with NTP client and PTP BC support


Cloudberry CM-1608FC4-NTS Series products

CR-1006 Key Features Documentation
  • 4 x 10/100/1000BASE-TX ports
  • 4 x 1000BASE SFP/RJ45 combo ports
  • Network redundancy: OnTime-Ring- or MSTP/RSTP/STP protocol
  • Network management: Web, telnet, CLI and SNMP v1/v2/v3
  • Multicast filtering: IGMP snooping
  • IEEE802.1Q VLAN
  • Port trunking
  • Event notification: through Syslog, Email, and SNMP trap
  • Wide operating temperature: [-40°C..70°C]
  • AC (100-240VAC)
  • Dual power supply option available
  • Mounting: 19 inch mounting

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