Mobile backhaul depends on accurate timing as much as it depends on bandwidth. The CTC Union XGS-1208SE brings both requirements into one L2+ managed switch, combining twelve 10G SFP+ slots and eight Gigabit Ethernet RJ45 data ports with SyncE and IEEE 1588v2 PTP.
The 256 Gbps switching fabric is sized for the full port configuration. This makes the switch a practical fit for 4G and 5G backhaul, core switching and factory automation networks that need high-density fiber connectivity together with a common timing reference.
Timing hardware for synchronized Ethernet networks
SyncE distributes a frequency reference over the Ethernet physical layer, while PTP carries time and phase information across the packet network. The XGS-1208SE supports slave clock, boundary clock and transparent clock operation as well as IEEE 802.1AS gPTP. All copper and fiber data ports support the timing functions.
Two SMA connectors provide 1PPS input and output. The input accepts an external reference clock, while the output can be connected to test equipment for PTP waveform measurement. A built-in DPLL and OCXO provide the hardware foundation for stable synchronization.
Data ports, management and console access
Alongside its twelve 10G SFP+ slots, the switch has eight 10/100/1000Base-T data ports and a separate Gigabit Ethernet management port. A USB Type-C console interface provides local RS-232 access without an additional serial adapter.
The SFP+ interfaces can be matched to the required fiber type and link distance. Available 10G optics cover 300 m over multimode fiber and 10, 40 or 80 km over single-mode fiber. Internally, the platform combines a 32 Mbit packet buffer, a 32K MAC address table and support for jumbo frames up to 10 KB.
Network control includes IEEE 802.1Q VLANs, QinQ, LACP, QoS, IGMP snooping and STP, RSTP and MSTP. IEEE 802.1X, Layer 2–4 ACLs, RADIUS, TACACS+, IP source guard and ARP inspection provide access and traffic controls. Administrators can use the web interface, SNMP or SSH for remote management.
Five AC and DC power configurations
All five models use the same switching and timing platform. They differ only in the installed power supply arrangement:
| Model | Power configuration |
|---|---|
| XGS-1208SE-AC | Single AC supply, 100–240 V AC |
| XGS-1208SE-DC | Single DC supply, 36–60 V DC, nominal –48 V DC |
| XGS-1208SE-AA | Dual AC supplies, 100–240 V AC |
| XGS-1208SE-DD | Dual DC supplies, 36–60 V DC, nominal –48 V DC |
| XGS-1208SE-AD | One 100–240 V AC supply and one 36–60 V DC supply |
The enclosure measures 440 × 280 × 43.5 mm. Maximum power consumption is 38.4 W, and the specified operating temperature range is 0 °C to +50 °C. CE and FCC Class A are specified for the switch.
Specify the right XGS-1208SE configuration
The key project parameters are the number and distance of the fiber links, the required copper connections, the SyncE and PTP architecture and the available site power. Send IPC2U your requirements to select the appropriate switch version and SFP+ modules.
