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NS3552-16P-2T-2S User
Manual
P/N 1073223-EN • REV B • ISS 01FEB19
Copyright
©
2019 United Technologies Corporation.
Interlogix is part of UTC
Climate, Controls & Security, a unit of United Technologies
Corporation
. All rights reserved.
Trademarks and patents
Trade names used in this document may be trademarks or registered trademarks of the
manufacturers or vendors of the respective products.
Manufacturer
Interlogix
2955 Red Hill Avenue, Costa Mesa, CA 92626
-5923, USA
Authorized EU manufacturing representative:
UTC Fire & Security B.V.
Kelvinstraat 7, 6003 DH Weert, The Netherlands
Version
This document applies to
NS3552-16P-2T-2S.
FCC compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received,
including interference that may cause undesired
operation.
FCC compliance
Class A:
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide
reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction
manual,
may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
Canada
This Class A
digital apparatus complies with CAN ICES-003 (A)/NMB-3 (A).
Cet appareil numérique de la classe A est conforme à la norme CAN ICES
-003
(A)/NMB
-3 (A).
ACMA compliance
Notice!
This is a Class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate measures.
Certification
EU directives
This product and
- if applicable - the supplied accessories too are marked with "CE" and
comply therefore with the applicable
harmonized European standards listed under the
EMC Directive 2014/30/EU, the RoHS Directive 2011/65/EU.
2012/19
/EU (WEEE directive): Products marked with this symbol cannot be disposed of
as unsorted municipal waste in the European Union. For proper
recycling, return this
product to your local supplier upon the purchase of equivalent new equipment, or
dispose of it at designated collection points. For more information see:
www.recyclethis.info.
Product warnings and
disclaimers
THESE PRODUCTS ARE
INTENDED FOR SALE TO AND INSTALLATION BY
QUALIFIED PROFESSIONALS. UTC FIRE & SECURITY CANNOT PROVIDE ANY
ASSURANCE THAT ANY PERSON OR ENTITY BUYING ITS PRODUCTS,
INCLUDING ANY “AUTHORIZED DEALER” OR “AUTHORIZED RESELLER”, IS
PROPERLY TRAINED OR EXPERIENCED
TO CORRECTLY INSTALL FIRE AND
SECURITY RELATED PRODUCTS
.
For more information on warranty disclaimers and product safety information, please
check
www.firesecurityproducts.com/policy/product-warning/ or scan the following code:
Contact information and
manuals
For contact information go to:
www.interlogix.com or www.firesecurityproducts.com.
To get translations for this and other product manuals go to:
www.firesecurityproducts.com
.
NS3552-16P-2T-2S User Manual 1
Content
Important information#3
Chapter 1
Introduction#4
Package contents#4
Product description#5
Product features#8
Product specifications#12
Chapter 2
Installation#17
Hardware description#17
Installing the industrial managed switch#24
Cabling#27
Chapter 3
Switch management#33
Requirements#33
Management access overview#33
CLI mode management#34
Web management#36
SNMP-based network management#37
Smart discovery utility#37
Chapter 4
Web configuration#39
Main web page#40
System#42
Simple Network Management Protocol (SNMP)#72
Port management#84
Link aggregation#91
VLAN#99
Spanning Tree Protocol (STP)#124
Multicast#141
Quality of Service (QoS)#165
Access Control Lists (ACL)#186
Authentication#199
Security#234
MAC address table#250
LLDP#254
Network diagnostics#268
Loop protection#272
RMON#274
Power over Ethernet (PoE)#283
2 NS3552-16P-2T-2S User Manual
Chapter 5
Switch operation#294
Address table#294
Learning#294
Forwarding and filtering#294
Store-and-forward#294
Auto-negotiation#295
Chapter 6
PoE overview#296
What is PoE?#296
PoE system architecture#296
Chapter 7
Troubleshooting#298
Appendix A
Networking connection#299
Glossary#301
NS3552-16P-2T-2S User Manual 3
Important information
Limitation of liability
To the maximum extent permitted by applicable law, in no event will UTCFS be liable
for any lost profits or business opportunities, loss of use, business interruption, loss of
data, or any other indirect, special, incidental, or consequential damages under any
theory of liability, whether based in contract, tort, negligence, product liability, or
otherwise. Because some jurisdictions do not allow the exclusion or limitation of liability
for consequential or incidental damages the preceding limitation may not apply to you.
In any event the total liability of UTCFS shall not exceed the purchase price of the
product. The foregoing limitation will apply to the maximum extent permitted by
applicable law, regardless of whether UTCFS has been advised of the possibility of
such damages and regardless of whether any remedy fails of its essential purpose.
Installation in accordance with this manual, applicable codes, and the instructions of the
authority having jurisdiction is mandatory.
While every precaution has been taken during the preparation of this manual to ensure
the accuracy of its contents, UTCFS assumes no responsibility for errors or omissions.
Advisory messages
Advisory messages alert you to conditions or practices that can cause unwanted
results. The advisory messages used in this document are shown and described below.
WARNING: Warning messages advise you of hazards that could result in injury or loss
of life. They tell you which actions to take or to avoid in order to prevent the injury or
loss of life.
Caution: Caution messages advise you of possible equipment damage. They tell you
which actions to take or to avoid in order to prevent damage.
Note: Note messages advise you of the possible loss of time or effort. They describe
how to avoid the loss. Notes are also used to point out important information that you
should read.
4 NS3552-16P-2T-2S User Manual
Chapter 1
Introduction
The description of the IFS NS3552-16P-2T-2S model is as follows:
Industrial L2+ 16-port 10/100/1000T 802.3at PoE
+ 2-port 10/100/1000T managed switch
Managed switch with 2-port 100/1000X SFP
Unless specified, the term “industrial managed switch” mentioned in this user manual
refers to the NS3552-16P-2T-2S.
Package contents
Open the box of the industrial managed switch and carefully unpack it. The box should
contain the following items:
The industrial managed switch × 1
Quick installation guide × 1
RJ45 to RS232 console cable × 1
DIN rail kit × 1
Wall mounting kit × 1
SFP dust-proof cap × 2
RJ45 dust-proof cap × 2
If any of these are missing or damaged, contact your dealer immediately. If possible,
retain the carton including the original packing materials for repacking the product in
case there is a need to return it to us for repair.
Chapter 1: Introduction
NS3552-16P-2T-2S User Manual 5
Product description
The industrial managed switch is specially designed to build a full Gigabit backbone to
transmit reliable and high-speed data in demanding heavy industrial environments and
forward data to remote network through fiber optic cabling. It comes with an IP30
rugged case and redundant power system. Besides support for 60 Gbps switch fabric
to handle extremely large amounts of video, voice, and important data in a secure
topology, the industrial managed switch provides user-friendly, advanced IPv6/ IPv4
management interfaces and abundant L2/L4 switching functions. It is the best
investment for expanding industrial business or upgrading its network infrastructure.
Redundant ring, fast recovery for critical network applications
The industrial managed switch supports redundant ring technology and features strong,
rapid self-recovery capability to prevent interruptions and external intrusions. It
incorporates advanced ITU-T G.8032 ERPS (Ethernet Ring Protection Switching)
technology, Spanning Tree Protocol (802.1s MSTP), and redundant power input
system into the customer’s industrial automation network to enhance system reliability
and uptime in harsh factory environments. In a certain simple ring network, the
recovery time of data link can be as fast as 20 ms.
Environmentally hardened design
With its IP30 aluminum case, the industrial managed switch provides a high level of
immunity against electromagnetic interference and heavy electrical surges which are
usually found on plant floors or in curb-side traffic control cabinets. It also possesses an
integrated power supply source with a wide range of voltages for worldwide high
availability applications requiring dual or backup power inputs. Being able to operate
under the temperature range from -40 to 75°C, the industrial managed switch can be
placed in almost any difficult environment.
Digital input and digital output for external alarm
The industrial managed switch supports digital input and digital output on its upper
panel. The external alarm allows users to use the digital input to detect an external
device’s status (such as door intrusion detector), and send an event alarm to the
administrators. The digital output can be used to alarm the administrators if the
industrial managed switch port is link-down, link-up, or power-dead.
Chapter 1: Introduction
6 NS3552-16P-2T-2S User Manual
Intelligent powered device alive check
The industrial managed switch can be configured to monitor connected PD status in
real time via a ping action. After the PD stops working and responding, the industrial
managed switch resumes the PoE port power and puts the PD back to work. The
industrial managed switch greatly enhances the network reliability through the PoE port
resetting the PD’s power source and reducing the administrator management burden.
PoE schedule for energy saving
Under the trend of energy saving worldwide and contributing to environmental
protection, the industrial managed switch can effectively control the power supply in
Chapter 1: Introduction
NS3552-16P-2T-2S User Manual 7
addition to its capability of provideing high Watt power. The “PoE schedule” function
helps you to enable or disable PoE power feeding for each PoE port during specified
time intervals, and is a powerful function to help SMBs or enterprises save power and
money.
Robust layer 2 feature
The industrial managed switch can be programmed for advanced switch management
functions such as dynamic port link aggregation, Q-in-Q VLAN, Multiple Spanning Tree
Protocol (MSTP), layer 2 to layer 4 QoS, bandwidth control, and IGMP / MLD snooping.
The industrial managed switch allows the operation of a high-speed trunk combining
multiple ports.
IPv6/IPv4 full-function secure switch for building automation networking
The industrial managed switch is the ideal solution to fulfilling the demand of IPv6
management gigabit Ethernet switches, especially in the industrial-hardened
environment. It supports both IPv4 and IPv6 protocols, advanced Layer 2 to Layer 4
data switching and redundancy, QoS traffic control, network access control and
authentication, and secure management features to protect customer’s industrial and
building automation network connectivity with reliable switching recovery capability that
is suitable for implementing fault tolerant and mesh network architectures.
IPv4/IPv6 VLAN routing for secure and flexible management
The industrial managed switch offers a IPv4/IPv6 VLAN routing feature that allows
cross over of different VLANs and different IP addresses for the purpose of having a
highly secured, flexible management and simpler networking application.
User-friendly management interfaces
For efficient management, the industrial managed switch is equipped with console,
web, and SNMP management interfaces. With the built-in web-based management
interface, the industrial managed switch offers an easy-to-use, platform-independent
management and configuration facility. The industrial managed switch supports
standard Simple Network Management Protocol (SNMP) and can be managed by any
management software based on the standard SNMP v1 or v2 protocol. For reducing
Chapter 1: Introduction
8 NS3552-16P-2T-2S User Manual
product learning time, the industrial managed switch offers Cisco-like command via
Telnet or console port, and the customer doesn’t need to learn new commands from
these switches. Moreover, the industrial managed switch offers secure management
remotely by supporting SSH, SSL, and SNMP v3 connections where the packet content
can be encrypted at each session.
Intelligent SFP diagnostic mechanism
The industrial managed switch series supports a SFP-DDM (Digital Diagnostic Monitor)
function that can easily monitor real-time parameters of the SFP and SFP+
transceivers, such as optical output power, optical input power, temperature, laser bias
current, and transceiver supply voltage.
Flexible and extendable solution
The industrial managed switch features 100BASE-FX and 1000BASE-SX/LX SFP
(Small Form-factor Pluggable) fiber-optic modules, meaning the administrator now can
flexibly choose the suitable SFP transceiver according to the transmission distance or
the transmission speed required to extend the network efficiently.
1588 precision time protocol for industrial computing networks
The industrial managed switch is intended for telecom and carrier Ethernet
applications, supporting MEF service delivery and timing over packet solutions for the
IEEE 1588 Precision Time Protocol and synchronous Ethernet.
Product features
Physical port
• 10/100/1000BASE-T gigabit RJ45 copper
• 100/1000BASE-X mini-GBIC/SFP slots, SFP type auto detection
• Console interface for basic switch management and setup
Power over Ethernet
• Complies with IEEE 802.3at Power over Ethernet end-span/mid-span PSE.
• Up to 8/16 of IEEE 802.3af/IEEE 802.3at devices powered.
• Supports PoE power up to 15.4/36 W for each PoE port.
• Auto detects powered device (PD).
• Circuit protection prevents power interference between ports.
• Remote power feeding up to 100 meters.
• PoE management:
• Total PoE power budget control
• Per port PoE function enable/disable
Chapter 1: Introduction
NS3552-16P-2T-2S User Manual 9
• PoE admin-mode control
• PoE port power feeding priority
• Per PoE port power limitation
• PD classification detection
• Intelligent PoE features:
• Temperature threshold control
• PoE usage threshold control
• PD alive check
• PoE schedule
Industrial case and installation
• IP30 aluminum case
• DIN-rail and wall-mount design
• Redundant power design
• Supports Ethernet ESD protection for 6000 VDC
• -40 to 75°C operating temperature
Digital input and digital output
• Two Digital Inputs (DI)
• Two Digital Outputs (DO)
• Integrates sensors into auto alarm system
• Transfers alarm to IP network via email and SNMP trap
Layer 2 features
• High performance of Store-and-Forward architecture and runt/CRC filtering
eliminates erroneous packets to optimize the network bandwidth.
Storm control support:
• Broadcast / Multicast / Unknown-Unicast
Supports VLAN
• IEEE 802.1Q tagged VLAN
• Up to 255 VLANs groups out of 4094 VLAN IDs
• Provider bridging (VLAN Q-in-Q) support (IEEE 802.1ad)
• Private VLAN Edge (PVE)
• Protocol-based VLAN
• MAC-based VLAN
• Voice VLAN
Chapter 1: Introduction
10 NS3552-16P-2T-2S User Manual
Supports STP
• STP, IEEE 802.1D Spanning Tree Protocol
• RSTP, IEEE 802.1w Rapid Spanning Tree Protocol
• MSTP, IEEE 802.1s Multiple Spanning Tree Protocol, spanning tree by VLAN
• BPDU Guard
Supports link aggregation
• IEEE 802.3ad Link Aggregation Control Protocol (LACP)
• Cisco ether-channel (static trunk)
Provides port mirror (many-to-1)
Port mirroring to monitor the incoming or outgoing traffic on a particular port
Loop protection to avoid broadcast loops
Supports Ethernet Ring Protection Switching (ERPS)
IEEE 1588 and synchronous Ethernet network timing
Layer 3 IP routing features
• Support static routes and route summarization
Quality of Service
• Ingress shaper and egress rate limit per port bandwidth control
• Eight priority queues on all switch ports
• Traffic classification:
- IEEE 802.1p CoS
- TOS / DSCP / IP Precedence of IPv4/IPv6 packets
- IP TCP/UDP port number
- Typical network application
• Strict priority and Weighted Round Robin (WRR) CoS policies
• Supports QoS and In/Out bandwidth control on each port
• Traffic-policing policies on the switch port
• DSCP remarking
Multicast
• Supports IGMP snooping v1, v2, and v3
• Supports MLD snooping v1 and v2
• Querier mode support
• IGMP snooping port filtering
Chapter 1: Introduction
NS3552-16P-2T-2S User Manual 11
• MLD snooping port filtering
• Multicast VLAN Registration (MVR) support
Security
• Authentication
− IEEE 802.1x Port-Based / MAC-Based network access authentication
− Built-in RADIUS client to co-operate with the RADIUS servers
− TACACS+ login users access authentication
− RADIUS / TACACS+ users access authentication
• Access Control List (ACL)
− IP-based ACL
− MAC-based ACL
• Source MAC / IP address binding
• DHCP snooping to filter distrusted DHCP messages
• Dynamic ARP inspection discards ARP packets with invalid MAC addresses to IP
address binding.
• IP source guard prevents IP spoofing attacks.
• Auto DoS rule to defend against DoS attacks.
• IP address access management to prevent unauthorized intruders.
Management
• IPv4 and IPv6 dual stack management
• Switch management interfaces:
− Console / Telnet Command Line Interface
− Web switch management
− SNMP v1 and v2c switch management
− SSH / SSL and SNMP v3 secure access
• IPv6 IP address/NTP/DNS management
• Built-in Trivial File Transfer Protocol (TFTP) client
• System maintenance
- Firmware upload/download via HTTP / TFTP
- Dual images
- Reset button for system reboot or reset to factory default
• Four RMON groups (history, statistics, alarms, and events)
• IPv6 IP address / NTP / DNS management and ICMPv6
• BOOTP and DHCP for IP address assignment
Chapter 1: Introduction
12 NS3552-16P-2T-2S User Manual
• DHCP relay
• DHCP Option 82
• User privelege levels control
• NTP (Network Time Protocol)
• Link Layer Discovery Protocol (LLDP) and LLDP-MED
• SFP-DDM (Digital Diagnostic Monitor)
• Smart discovery utility for deploy management
• Network diagnostic
− ICMPv6/ICMPv4 remote ping
− Cable diagnostic technology provides the mechanism to detect and report
potential cabling issues
• SMTP/Syslog remote alarm
• SNMP trap for interface Link Up and Link Down notification
• System log
Product specifications
Hardware Specification
s
Copper
Ports
1
8 10/100/1000BASE-T RJ45 auto-MDI/MDI-X ports
SFP
+ Slots
Two
1000BASE- X SFP interfaces (Port-19 to Port-20)
Compatible with 1000BASE
-FX SFP
PoE Injector Ports
16 ports with 802.3at/af PoE injector
function with Port-1 to Port-16
Console Port
1 x
RJ45 serial port (115200, 8, N, 1)
Switch Architecture
Store
-and-Forward
Switch
Fabric
40
Gbps / non-blocking
Throughput
2
9.7 Mpps @ 64 bytes
Address Table
8
K entries, automatic source address learning and aging
Share
d Data Buffer
4 M
bits
Flow Control
IEEE 802.3x
pause frame for full-duplex
Back pressure for
half-duplex
Jumbo Frame
9
K bytes
Reset Button
< 5 seconds: System reboot
>
5 seconds: Factory Default
Enclosure
IP30
aluminum case
Installation
DIN rail kit and wall
-mount kit
Chapter 1: Introduction
NS3552-16P-2T-2S User Manual 13
Dimensions (W×
D×H)
84
× 107 × 152 mm
Weight
1
533 g
Connector
Removable 6
-pin terminal block for power input
Pin 1/2 for Power 1, Pin 3/4 for fault alarm, Pin 5/6 for Power 2
Removable 6
-pin terminal block for DI/DO interface
Pin 1/2 for DI 1 & 2, Pin 3/4 for DO 1 & 2, Pin 5/6 for GND
Alarm
One relay output for power failure. Alarm relay current carry ability:
1A @ 24
VDC
Digital Input
Two Digital Inputs (DI)
Level 0:
-24~2.1 V (±0.1 V)
Lev
el 1: 2.1~24 V (±0.1 V)
Input load to 24 VDC, 10 mA max.
Digital Output
Two Digital Outputs (DO)
Open collector to 24 VDC, 100 mA max.
LED
System:
Power 1 (Green)
Power 2 (Green)
Fault Alarm (Red)
Ring (Green)
Ring Owner (Green)
Per 10/100/1000T RJ45
Ports:
100 LNK/ACT (Orange)
1000 LNK/ACT (Green)
Per SFP Interface:
100 LNK/ACT (Orange)
1000 LNK/ACT (Green)
Power Requirement
48~56
VDC
Power
Consumption
349 W/1190.83 BTU (Full loading with PoE function)
ESD Protection
6K VDC
Power Over Ethernet
PoE Standard
IEEE 802.3af/IEEE 802.3at Power over Ethernet/PSE
PoE Power Supply Type
End
-span
PoE Power Output
Per Port 56V DC, 350mA . Max. 15.4
W (IEEE 802.3af)
Per Port 56V DC, 590mA. Max. 36
W (IEEE 802.3at)
Power Pin Assignment
1/2(+), 3/6(
-)
PoE Power
Budget
320
W maximum (depending on power input)
Max. number of Class 2 PDs
16
Max. number of Class 3 PDs
16
Max. number of Class 4 PDs
10
Layer 2
Functions
Chapter 1: Introduction
14 NS3552-16P-2T-2S User Manual
Basic Management Interfaces
Console; Telnet; Web browser; SNMP v1, v2c
Secure
Management
Interfaces
SSH, SSL, SNMP v3
Port
Configuration
Po
rt disable / enable
Auto
-negotiation 10/100/1000Mbps full and half duplex mode selection
Flow
control disable/enable
Port Status
Display each port’s
speed duplex mode, link status, flow control status, auto-
negotiation status, trunk
status
Port Mirroring
TX / RX / both
1
-to-1 monitor
VLAN
802.1Q tagged
-based VLAN, up to 255 VLAN groups
Q
-in-Q tunneling
Private VLAN
Edge (PVE)
MAC
-based VLAN
Protocol
-based VLAN
Voice VLAN
MVR (Multicast VLAN
Registration)
U
p to 255 VLAN groups, out of 4095 VLAN IDs
Link Aggregation
IEEE 802.3ad LACP
/static trunk
Five
groups with 10 ports per trunk
QoS
Traffic classification based,
strict priority and WRR
8
-level priority for switching
–
Port number
–
802.1p priority
–
802.1Q VLAN tag
–
DSCP/ToS field in IP packet
IGMP Snooping
IGMP (v1/v2
/v3) snooping, up to 255 multicast groups
IGMP
querier mode support
MLD Snooping
MLD (v1/v2)
snooping, up to 255 multicast groups
MLD
querier mode support
Access C
ontrol List
IP
-based ACL / MAC-based ACL
Up to
123 entries
Bandwidth Control
Per port bandwidth control
–
Ingress: 500 Kbps~1000 Mbps
–
Egress: 500 Kbps~1000 Mbps
Layer 3 Functions
IP Interfaces
Max
imum of eight VLAN interfaces
Routing Table
Max
imum of 32 routing entries
Routing Protocols
IPv4
software static routing
IPv6 software
static routing
Standards Conformance
Chapter 1: Introduction
NS3552-16P-2T-2S User Manual 15
Regulation Compliance
FCC Part 15 Class A, CE
Stability Testing
IEC60068
-2-32 (free fall)
IEC60068
-2-27 (shock)
IEC60068
-2-6 (vibration)
Standards Compliance
IEEE 802.3 10BASE
-T
IEEE 802.3u 100BASE
-TX/100BASE-FX
IEEE 802.3z Gigabit SX/LX
IEEE 802.3ab Gigabit 1000BASE
-T
IEEE 802.3x Flow Control and Back Pressure
IEEE 802.3ad Port Trunk with LACP
IEEE 802.1D Spanning Tree
Protocol
IEEE 802.1w Rapid Spanning Tree Protocol
IEEE 802.1s Multiple Spanning Tree Protocol
IEEE 802.1p Class of Service
IEEE 802.1Q VLAN Tagging
IEEE 802.1x Port Authentication Network Control
IEEE 802.1ab LLDP
RFC 768 UDP
RFC 793 TFTP
RFC 791 IP
RFC
792 ICMP
RFC 2068 HTTP
RFC 1112 IGMP version 1
RFC 2236 IGMP version 2
RFC 3376 IGMP version 3
RFC 2710 MLD version 1
FRC 3810 MLD version 2
SNMP MIBs
RFC
-1213 MIB-II
IF
-MIB
RFC 1493 Bridge MIB
RFC 1643 Ethernet MIB
RFC 2863 Interface MIB
RFC 2665
Ether-Like MIB
RFC 2819 RMON MIB (Group 1, 2, 3 and 9)
RFC 2737 Entity MIB
RFC 2618 RADIUS Client MIB
RFC 2933 IGMP
-STD-MIB
RFC 3411 SNMP
-Frameworks-MIB
IEEE 802.1X PAE
LLDP
MAU
-MIB
Environment
Operating
Temperature:
-40 to 75°C
Relative Humidity:
5 to 95% (non-condensing)
Chapter 1: Introduction
16 NS3552-16P-2T-2S User Manual
Storage
Temperature:
-40 to 75°C
Relative Humidity:
5 to 95% (non-condensing)
17 NS3552-16P-2T-2S User Manual
Chapter 2
Installation
This section describes the hardware features of the industrial managed switch. For
easier management and control of the industrial managed switch, familiarize yourself
with its display indicators and ports. Front panel illustrations in this chapter display the
unit LED indicators. Before connecting any network device to the industrial managed
switch, please read this chapter completely.
Hardware description
The industrial managed switch provides three different running speeds – 10Mbps,
100Mbps, and 1000Mbps, and automatically distinguishes the speed of the incoming
connection.
Chapter 2: Installation
18 NS3552-16P-2T-2S User Manual
Physical dimensions
Dimensions (W x D x H): 84 x 107 x 152 mm
/