EN50155 Switch | EN50155 Managed Switch ITP-2204GTM | DCT

Features

M12 and M23 fiber connector against vibration and shock, M12 X-code for Gigabit port
STP, RSTP, MSTP, ITU-T G.8031 ERP, ITU-T G.8032 Ethernet Protection Ring (ERPS) for redundant cabling
Provides up to 5 instances that each supports μ-Ring, μ-Chain or Sub-Ring type for flexible uses. (Please see CTC Union’s μ-Ring white paper for more details)
μ-Ring for Redundant Cabling, recovery time<10ms in 250 maximum devices
Supports TTDP for train application
Supports IEEE 1588 PTP V2 for precise time synchronization to operate in Ordinary-Boundary, Peer to Peer Transparent Clock, End to End Transparent Clock, Master, Slave mode by each port
Supports EMS Management

The ITP series models are managed, industrial grade, L2 Fast Ethernet switches that provide 22x 10/100Base-TX and 4x 10/100/1000Base-T(X) ports. The ITP switches use M12 connectors to ensure tight, robust connections and guarantee reliable connections against vibration and shock. These models are also compliant with EN50155, covering power input voltage, surge, EFT, ESD, vibration and shock, making these switches suitable for industrial applications, such as vehicle, rolling stock, or vessel. With a wide power input range of 24/48/72/96/110VDC (operating range 20 to 137.5VDC), this product series is especially suitable for rolling stock and track side installations.

Standards & Protocols

Ethernet Standards

IEEE 802.3 10Base-T (10Mbps Ethernet)
IEEE 802.3u 100Base-TX (100Mbps Fast Ethernet)
IEEE 802.3ab 1000Base-T (Gigabit Ethernet over twisted pair)
Network Management & Security
IEEE 802.1d STP (Spanning Tree Protocol)
IEEE 802.1w RSTP (Rapid Spanning Tree Protocol)
IEEE 802.1s MSTP (Multiple Spanning Tree Protocol)
ITU-T G.8032 ERPS (Ethernet Ring Protection Switching)
ITU-T G.8031 EPS (Ethernet Protection Switching)
IEEE 802.1Q VLAN (supports up to 4094 VLAN IDs)
IEEE 802.1X Port-based and MAC-based network access control, authentication
IEEE 802.3x Flow control for full-duplex
IEEE 802.3ac Jumbo frame support up to 1522 bytes
IEEE 802.3ad Link Aggregation (LACP)
IEEE 802.1AX Active/Passive mode link aggregation
IEEE 802.1p LAN Layer 2 QoS/CoS protocol for traffic prioritization
IEEE 802.1ab Link Layer Discovery Protocol (LLDP)
IEEE 802.3az Energy Efficient Ethernet (EEE)

Hardware Specifications

Ports

22x M12 (D-Code) 10/100Base-TX Ethernet ports
4x M12 (X-Code) 10/100/1000Base-T Gigabit Ethernet ports
RS-232 Console (5-pin A-Code M12 male)
Build-in 2x bypass GbE UTP ports (optional for -BP model)
MAC Address Table: 8K
Memory Buffer: 512K Bytes
Device Memory: 16M Bytes Flash ROM, 128M Bytes RAM
Packet Processing: Store-and-Forward
Switching Fabric: 12.4Gbps full wire-speed
Jumbo Frame Support: 9.6KB

Power & Protection

Power Input: 1x M23 (5-Pin, male) for redundant dual DC 24/48/72/96/110VDC (16.8~137.5VDC)
Power Consumption:
24VDC: 17.1W
48VDC: 17.8W
110VDC: 19.8W
Overload Current Protection & Reverse Polarity Protection
Hi-Pot Protection: 2.25KV DC isolation for power & Ethernet ports
Surge Protection: 4KV for UTP ports

Environmental & Physical Specifications

Operating Temperature: -40°C to 75°C
Operating Humidity: 5% to 95% (non-condensing)
Storage Temperature: -40°C to 85°C
Housing: Rugged metal, fanless, IP54-rated
Dimensions: 113 x 360 x 132mm (D x W x H)
Weight: 3.9kg
Mounting: Wall mounting
MTBF: 230,352 hours (MIL-HDBK-217)

Certifications & Compliance

Railway & Industrial Standards

EN50155, EN50121-4 (Railway Traffic)
EN45545-2 (Fire Protection for Railway Vehicles)
EN61000-6-2 (Heavy Industrial Immunity)
EN61000-6-4 (Heavy Industrial Emission)

EMC & EMI Compliance

CE (EN55024, EN55032), FCC Part 15 Subpart B Class A

Shock & Vibration Resistance

IEC 61373 (Shock & Vibration)
- IEC 60068-2-32 (Freefall)
Electromagnetic Susceptibility Protection:
- EN61000-4-2 (ESD) Level 3
- EN61000-4-3 (RS) Level 3
- EN61000-4-4 (Burst) Level 3
- EN61000-4-5 (Surge) Level 3
- EN61000-4-6 (CS) Level 3
- EN61000-4-8 (Magnetic Field) 300A/m

Advanced Network Features

Redundancy & Ring Protection

Supports up to 5 instances of μ-Ring, μ-Chain, or Sub-Ring
μ-Ring recovery time: <10ms (max 250 devices)
ITU-T G.8032 ERPS for Ethernet Ring Protection (Recovery <10ms)
ITU-T G.8031 EPS for Ethernet Protection Switching

QoS & Traffic Control

IEEE 802.1p Class of Service (8 priority queues per port)
Traffic classification based on VLAN, IP Precedence, DSCP
Storm Control for Unicast, Broadcast, and Multicast traffic

Security Features

IEEE 802.1X (Port & MAC-based Authentication)
ACL (256 L2/L3/L4 rules)
RADIUS & TACACS+ Authentication
HTTPS, SSL, SSH, User Authentication

Management & Monitoring

CLI, Web UI, SNMPv1/v2c/v3, sFlow, Modbus/TCP
TFTP/HTTP Firmware Upgrade, FTP Configuration Backup
Syslog, Email Alerts, Alarm Relay
IEEE 1588 PTP V2 (Time Synchronization, 5 modes)
TTDP (Train Topology Discovery Protocol) support

Ordering Information

Model	Total Ports	10/100Base-TX (D-Code)	GbE (X-Code)	Bypass GbE	Power Input	Certifications
ITP-2204GTM-E-BP	26	22	2	2	24/48/72/96/110VDC	EN50155, EN50121-4, EN45545-2, CE, FCC, IEC61373

EN50155 Switch | EN50155 Managed Switch ITP-2204GTM