Lantronix SGETF10xx-1xx Stand Alone Gigabit Ethernet Media Converter User Guide

June 13, 2024
LANTRONIX

Lantronix SGETF10xx-1xx Stand Alone Gigabit Ethernet Media Converter

Product Information

The SGETF10xx-1xx Gigabit Ethernet media converter is a stand-alone device that connects 1000Base-T shielded or unshielded twisted-pair copper cable to 1000Base-SX or 1000Base-LX fiber-optic cable. It is manufactured by Lantronix.

Models / Part Numbers:

  • Part Number: SGETF1013-110
    • Port One: Copper RJ-45 1000Base-T
    • Port Two: Duplex Fiber-Optic SC, 1000Base-SX, 850 nm multimode
    • Maximum Cable Distance:
    • 100 m (328 ft)*
    • 220 m (721 ft)* (62.5/125 m cable)
    • 550 m (1,804 ft)* (50/125 m cable)
  • Part Number: SGETF1014-110
    • Port One: RJ-45 1000Base-T
    • Port Two: SC, 1000Base-LX, 1310 nm single mode
    • Maximum Cable Distance:
    • 100 m (328 ft)*
    • 10 km (6.2 miles)*
  • Part Number: SGETF1040-110
    • Port One: Copper RJ-45 1000Base-T
    • Port Two: Open SFP slot
    • Maximum Cable Distance: 100 m (328 ft)*
  • Typical maximum cable distance. Actual distance depends on the physical characteristics of the network installation.

Compatible Accessories (sold separately):

The SGETF1040-110 converter supports various SFP transceiver modules for port two. The following SFP transceiver modules are compatible and available from Lantronix:

  • SGETF1040-110 TN-SFP-SX: LC, 1000Base-SX, 850 nm multimode, 220-550 mm (720-1804 ft)*
  • SGETF1040-110 TN-SFP-SXD: LC, 1000Base-SX, 850 nm multimode, 220-550 mm (720-1804 ft)*
  • SGETF1040-110 TN-SFP-LX1: LC, 1000Base-LX, 1310 nm single mode, 10 km (6.2 miles)*
  • SGETF1040-110 TN-SFP-LX3: LC, 1000Base-LX, 1310 nm single mode, 30 km (18.8 miles)*
  • SGETF1040-110 TN-SFP-LX5: LC, 1000Base-LX, 1550 nm single mode, 50 km (31.2 miles)*
  • SGETF1040-110 TN-SFP-LX8: LC, 1000Base-LX, 1550 nm single mode, 80 km (50.0 miles)*
  • SGETF1040-110 TN-SFP-LX12: LC, 1000Base-LX, 1550 nm single mode, 120 km (74.6 miles)*

Product Usage Instructions

  1. Installation:
  2. Ensure that the power supply is disconnected from the media converter.
  3. Connect the 1000Base-T shielded or unshielded twisted-pair copper cable to Port One (Copper RJ-45) of the media converter.
  4. Connect the 1000Base-SX or 1000Base-LX fiber-optic cable to Port Two (Duplex Fiber-Optic SC) of the media converter.
  5. If using the SGETF1040-110 model, insert a compatible SFP transceiver module into the Open SFP slot in Port Two.
  6. Connect the power supply to the media converter and plug it into a power outlet.

Note: Please refer to the complete user guide for more detailed instructions and information on configuring and using the SGETF10xx-1xx Gigabit Ethernet media converter.

Intellectual Property

© 2022, 2023 Lantronix, Inc. All rights reserved. No part of the contents of this publication may be transmitted or reproduced in any form or by any means without the written permission of Lantronix. Lantronix is a registered trademark of Lantronix, Inc. in the United States and other countries. All other trademarks and trade names are the property of their respective holders. Patented: https://www.lantronix.com/legal/patents/; additional patents pending.

Warranty

For details on the Lantronix warranty policy, go to http://www.lantronix.com/support/warranty.

Contacts
Lantronix Corporate Headquarters

Sales Offices
For a current list of our domestic and international sales offices, go to www.lantronix.com/about/contact.

Disclaimer
All information contained herein is provided “AS IS.” Lantronix undertakes no obligation to update the information in this publication. Lantronix does not make, and specifically disclaims, all warranties of any kind (express, implied or otherwise) regarding title, non-infringement, fitness, quality, accuracy, completeness, usefulness, suitability or performance of the information provided herein. Lantronix shall have no liability whatsoever to any user for any damages, losses and causes of action (whether in contract or in tort or otherwise) in connection with the user’s access or usage of any of the information or content contained herein. The information and specifications contained in this document are subject to change without notice. Transition Networks is now Lantronix. Some products/firmware items are still in the process of being re-branded and may still reflect the Transition Networks name/logo.

Revision History

Rev Date Notes
A 4/19/06 Sent for release.
B 8/14/06 Removed P/N SGETF1039-110. Switches 4 and 5 are both down (should

be 4 down and 5 up).
C| 12/13/06| Added parts SGETF1029-116 SGETF1029-117.
D| 5/9/07| Updated optic specifications. Revised Declaration of Conformity. Revised Loop Back explanation
E| 8/23/07| Revised optic spec SGETF1014-110.
F| 7/16/08| Added AutoCross explanation.
G| 8/18/08| Added Power Supply Specifications; 12VDC@ 0.8 Amps.
H| 7/26/23| Initial Lantronix re-brand. Updated TLPT description and re- format.

Introduction

Lantronix SGETF10xx-1xx Gigabit Ethernet media converter connects 1000Base-T shielded or unshielded twisted pair copper cable to 1000Base-SX or 1000Base- LX, fiber-optic cable. The SGETF10xx-1xx is a stand-alone media converter.

Models / Part Numbers

Part Number| Port One – Copper| Port Two – Duplex Fiber- Optic
---|---|---
SGETF1013- 110| RJ-45 1000Base-T| SC, 1000Base-SX, 850 nm multimode
 | 100 m (328 ft)*| 220 m (721 ft)* (62.5/125 μ m cable)
 |  | 550 m (1,804 ft)* (50/125 μ m cable)
SGETF1014- 110| RJ-45 1000Base-T| SC, 1000Base-LX, 1310 nm single mode
 | 100 m (328 ft)*| 10 km (6.2 miles) *

  • Typical maximum cable distance. Actual distance depends on the physical characteristics of the network installation.

Part Number| Port One – Copper| Port Two – Open SFP slot
---|---|---
SGETF1040-110| RJ-45 1000Base-T

100 m (328 ft)*

| Open slot for SFP modules

Sold separately, the following SFP transceiver modules for port two are compatible with the SGETF1040-110 converter and are available from Lantronix.

SGETF1040-110 Descriptions

  • TN-SFP-SX: LC, 1000Base-SX, 850 nm multimode, 220-550 mm (720-1804 ft)*
  • TN-SFP-SXD: LC, 1000Base-SX, 850 nm multimode, 220-550 mm (720-1804 ft)*
  • TN-SFP-LX1: LC, 1000Base-LX, 1310 nm single mode, 10 km (6.2 miles)*
  • TN-SFP-LX3: LC, 1000Base-LX, 1310 nm single mode, 30 km (18.8 miles)*
  • TN-SFP-LX5: LC, 1000Base-LX, 1550 nm single mode, 50 km (31.2 miles)*
  • TN-SFP-LX8: LC, 1000Base-LX, 1550 nm single mode, 80 km (50.0 miles)*
  • TN-SFP-LX12: LC, 1000Base-LX, 1550 nm single mode, 120 km (74.6miles)*

Typical maximum cable distance. Actual distance depends on the physical characteristics of the network.
Note: Third-party Multi-Source Agreement (MSA) compliant Small Form Factor Pluggables (SFPs) can also be used in the SGETF1040-110.

Compatible Accessories (sold separately)
Part Number/Description

  • SPS-2460-PS: Piggy-Back Power Supply for use with stand-alone media converters; 3.25” wide
  • WMBL: 4″ Wall Mount Kit (long)
  • WMBD-F: 3.3” DIN Rail Mount Bracket (flat)
  • WMBV: 5″ Vertical Mount
  • E-MCR-05: 12-Slot Media Converter Rack
  • RMS19-SA4:- 02 4-Slot Media Converter Shelf includes 4 brackets and 3 slot blanks
  • SPS-2460-SA: Stand-alone Power Supply for use with all stand-alone media converters and some chassis
  • WMBD: DIN Rail Mount Bracket Fits all Stand-Alone Converters; 5″ [127 mm]
  • SFP Modules: SFP Modules; see our SFP product page for details

Installation

Set the 6-position DIP switch

The 6-position DIP switch is located on the side of the media converter.

  • Use a small flat-blade screwdriver to set the recessed switches.
  • All DIP switches are shown in the default position, UP.

Note: Switch positions S2 and S3 work together to configure the media converter for Pause conditions.

  • S1 Remote-Fault Detection
  • up Disabled
  • down Enable
  • S2 & S3 Pause (S2 and S3 work in combination)
  • 10 sw position 2 up and 3 down: Symmetric
  • 01 sw positions 2 down and 3 up: Asymmetric
  • 11 sw positions 2 and 3 up: Pause is OFF (default position)
  • 00 sw positions 2 and 3 down: Symmetric and Asymmetric
  • S4 Transparent Link Pass-Through
  • up: Enable Link Pass-Through
  • down: Disable Link Pass-Through
  • S5 Fiber Auto-Negotiation
  • up: Disable Fiber Auto-Negotiation for the fiber link (default setting)
  • down: Enable Fiber Auto-Negotiation for the fiber link
  • S6 Loop Back
  • up: Disable RX/TX signal loop back (default setting)
  • down: Enable RX/TX signal loopback

Install Mode
During installation, set converter DIP switch 4 DOWN; leave all other switches in the UP position (default). This disables Transparent Link Pass-Through and Auto-Negotiation, allowing individual copper and fiber links to be established (both copper port LEDs will turn ON with each device-to-device connection) independent of a complete end-to-end connection.

Operation Mode
After installation is complete (all copper and fiber ports connected and linked), set all switches to the UP position (default).

Fiber Auto-Negotiation
Fiber Auto-Negotiation allows the fiber interface to detect and then advertise the supported features of the remote device; this occurs only when a fiber cable is connected to a device with a negotiating port. The process is as follows:

  1. The fiber interface detects the supported features of the remote partner.
  2. These abilities are passed to the twisted-pair interface and advertised.
  3. Once the twisted-pair interface has a link at the highest common capability, it passes the result to the fiber interface.
  4. The fiber interfaces then start advertising these capabilities. At this point, the link between the fiber and the negotiating port is complete.

If the SGETF10xu-1xu is connected via fiber to another SGETF10xu-1xu, both media converters must have the Fiber Auto-Negotiation setting disabled (switch 5 UP).
Note: Transparent Link Pass-Through (switch position 4 enabled) cannot be turned OFF (disabled) when Fiber Auto-Negotiation is ON (enabled).

Install the fiber cable

  1. Locate a 1000Base-SX/LX compliant fiber cable with male, two-stranded TX-to-RX connectors installed at
    both ends.

  2. Connect the fiber cables to the SGETF10xx-1xx media converter as described below:

    • Connect the male TX cable connector to the female TX port.
    • Connect the male RX cable connector to the female RX port.
  3. Connect the fiber cables to the other device (another media converter, hub, etc.) as described:

    • Connect the male TX cable connector to the female RX port.
    • Connect the male RX cable connector to the female TX port.

Power the media converter
AC
The external power supply provided with this device is UL-listed by the manufacturer of the power supply.

  1. Install the power adapter cord to the back of the media converter.
  2. Connect the power adapter plug to AC power.
  3. Verify that the media converter is powered by observing the illuminated LED power indicator light.
    DC
    Consult the user guide for the Lantronix external power supply for powering the media converter.

Operation

Status LEDs

  • Use the status LEDs to monitor the SGETF10xx-1xx media converter operation in the network.
  • PWR (Power): ON = Connected to external AC power.
  • LKF (Fiber link): ON = Fiber Connection
  • RXC (Copper receive): Flashing = Receiving data on the copper link.
  • ON = Copper Link connection
  • Duplex: ON = Full duplex

Remote-Fault Detect
Remote fiber fault detect (RFD) monitors the status of the fiber link. RFD must only be enabled on the remote converter. If RFD is enabled in the device at each end of the link, a link pass-through event will put the converters into an unrecoverable state (unable to establish a link).

Pause
The pause feature can improve network performance by allowing one end of the link to signal the other to discontinue frame transmission for a set period of time to relieve buffer congestion.
The pause feature can be set to one of four settings:

  • Disable (i.e., no pause)
  • Symmetrical pause
  • Asymmetric TX (transmit) pause
  • Asymmetric RX (receive) pause

Enable the pause feature if it is present on ALL network devices attached to the media converter(s); otherwise, disable the pause feature.

AutoCross (always on)
The AutoCross feature allows either straight-through (MDI) or crossover (MDI-X) cables to be used when connecting to 10Base-T, 100Base-TX, or 1000Base-T devices, such as hubs, transceivers, or network interface cards (NICs). AutoCross determines the characteristics of the cable connection and automatically configures the unit to link up to its companion device regardless of the cable configuration.

Link Pass-Through
The Link Pass-Through feature allows the media converter to monitor both the fiber and copper RX (receive) ports for loss of signal. Refer to the illustration below. For example, in the event of a loss of an RX signal (1), the media converter will automatically disable the fiber TX (transmit) signal (2), thus, “passing through” the link loss (3). The far-end device is automatically notified of the link loss (4), which prevents the loss of valuable data unknowingly transmitted over an invalid link.

Transparent Link Pass-Through
Transparent Link Pass-Through operates similar to Link Pass-Through with one exception: the fiber link between the converters remains active. A signal is passed through to the remote converter, causing it to shutdown the copper link, notifying the end device of the link failure. The SGETF10xx-110 converters use a unique version of Transparent Link Pass Through. During a Link Pass Through condition, the fiber strand used to propagate the link failure does go down, while the return fiber link remains active.

Auto-Negotiation
Auto-negotiation enables automatic configuration to achieve the best possible mode of operation over a link between devices. A device with this feature enabled will broadcast its speed (10Mbs, 100Mbs, etc.) and duplex (half/full) capabilities to another device with this feature, then negotiate the best mode of operation between them—no user intervention required.
Fiber Auto-Negotiation
Fiber Auto-Negotiation allows the fiber interface to detect and then advertise the support abilities of the remote device. It is supported only when the fiber is connected to a device with a negotiating port.
Loop Back
This diagnostic feature enables the media converter to loop back the signal from the RX port to the TX port for testing and troubleshooting purposes. Test signals from a bit-error test unit can then be inserted into either the copper or fiber link to test a particular segment. This type of diagnostic test can only be performed from the local to the remote device with loopback enabled on the remote device.

SNMP
Note: SNMP is not supported in the SGETF10xx-1xx converters.

Cable Specifications

The physical characteristics must meet or exceed IEEE 802.3™ specifications.

Fiber cable

  • Bit Error Rate: <10-9
  • Single-mode fiber (recommended): 9 μm
  • Multimode fiber (recommended): 62.5/125 μm
  • Multimode fiber (optional): 100/140, 85/140, 50/125 μm
  • SGETF1013-110: 850 nm multimode
  • Fiber Optic Transmitter Power: min: -10.0 dBm max: -4.0 dBm
  • Fiber Optic Receiver Sensitivity: min: -17.0 dBm max: 0.0 dBm
  • Link Budget: 7.0 dB
  • SGETF1014-110: 1310 nm single mode
  • Fiber-optic Transmitter Power: min: -9.5 dBm max: -3.0 dBm
  • Fiber-optic Receiver Sensitivity: min: -20.0 dBm max: -3.0 dBm
  • Link Budget: 10.5 dB
  • SGETF1015-110 1310 nm single mode
  • Fiber-optic Transmitter Power: min: -5.0 dBm max: -0.0 dBm
  • Fiber-optic Receiver Sensitivity: min: -24.0 dBm max: -3.0 dBm
  • Link Budget: 19.0 dB
  • SGETF1017-110 1550 nm single mode
  • Fiber-optic Transmitter Power: min: -3.0 dBm max: 2.0 dBm
  • Fiber-optic Receiver Sensitivity: min: -24.0 dBm max: -3.0 dBm
  • Link Budget: 21.0 dB
  • SGETF1024-110 1300 nm extended multimode
  • Fiber-optic Transmitter Power: min: -10.0 dBm max: -3.0 dBm
  • Fiber-optic Receiver Sensitivity: min: -17.0 dBm max: -3.0 dBm
  • Link Budget: 7.0 dB
  • SGETF1035-110 1550 nm single mode
  • Fiber-optic Transmitter Power: min: 0.0 dBm max: 5.0 dBm
  • Fiber-optic Receiver Sensitivity: min: -27.0 dBm max: -3.0 dBm
  • Link Budget: 27.0 dB
  • SGETF1029-110 1310nm TX / 1550nm RX single mode
  • SGETF1029-111 1550nm TX / 1310nm RX single mode
  • Fiber-optic Transmitter Power: min: -8.0 dBm max: -3.0 dBm
  • Fiber-optic Receiver Sensitivity: min: -21.0 dBm max: -3.0 dBm
  • Link Budget: 13.0 dB

(Fiber cable specifications continued on next page.)

Fiber cable specifications – Continued

  • SGETF1029-112 1310nm TX / 1550nm RX single mode
  • SGETF1029-113 1550nm TX / 1310nm RX single mode
  • Fiber-optic Transmitter Power: min: -3.0 dBm max: +2.0 dBm
  • Fiber-optic Receiver Sensitivity: min: -23.0 dBm max: -3.0 dBm
  • Link Budget: 20.0 dB
  • SGETF1029-116: 1510nm TX / 1590nm RX single mode
  • SGETF1029-117: 1590nm TX / 1510nm RX single mode
  • Fiber-optic Transmitter Power: min: -2.0 dBm max: +3.0 dBm
  • Fiber-optic Receiver Sensitivity: min: -26.0 dBm max: -3.0 dBm
  • Link Budget: 24.0 dB

Copper cable (Category 5 — minimum requirement)

  • Gauge = 24 to 22 AWG; Attenuation = 22.0 dB /100m @ 100 MHz
  • Straight-through OR crossover cable may be used.
  • Shielded twisted-pair (STP) OR unshielded twisted-pair (UTP) may be used
  • All pin pairs (1&2, 3&6, 4&5, 7&8) are active in a gigabit network.
  • Use only dedicated wire pairs for the active pins (e.g., blue/white & white/blue, orange/white & white/orange, etc.)
  • Do not use flat or silver satin wire.

Technical Specifications

  • For Lantronix Model SGETF10xx-1xx or equivalent:
  • Standards: IEEE 802.3ab™, IEEE 802.3 2000
  • Data Rate / Delay: 1000 Mbs/300 nsec
  • Dimensions: 3.25″ x 0.1″ x 4.8″ (82mm x 25mm x 122mm)
  • Weight: 3 oz. (91 g) approximately
  • Power Supply: 12VDC @ 0.8A (minimum)
  • Power Consumption: 5.4W, 450mA @ 12VDC
  • Packet Size: 10 Kbytes (maximum)
  • MTBF* 382,000 hours (MIL217F2 V5.0) (MIL-HDBK-217F)
  • 1,345,000 hours (Bellcore7 V5.0)
  • Operating Temp: Tmra** 0°C to 50°C (32°F to 122°F)
  • Storage Temp: -15°C to 65°C (5°F to 149°F)
  • Humidity: 10% to 90%, non-condensing
  • Altitude: 0 to 10,000 feet
  • Warranty: Lifetime

MTBF is estimated using the predictability method. This method is based on MIL-217F at 25°C ambient temperature, typical enclosure heat rise of 10°C, and nominal operating conditions and parameters. Installation and configuration- specific MTBF estimates are available upon request. Contact Technical Support.

Manufacturer’s rated ambient temperature.

  • For the most up-to-date information on the SGETF10xx-1xx media converter, view the online user guide at www.lantronix.com.
  • The fiber optic transmitters on this device meet Class I Laser safety requirements per IEC-825/CDRH standards and comply with 21 CFR1040.10 and 21 CFR1040.11.

WARNING: Visible and invisible laser radiation when open. Do not stare into the beam or view the beam directly with optical instruments. Failure to observe this warning could result in an eye injury or blindness.
WARNING: Use of controls, adjustments or the performance of procedures other than those specified herein may result in hazardous radiation exposure.
IMPORTANT: Copper-based media ports such as Twisted Pair (TP) Ethernet, USB, RS232, RS422, RS485, DS1, DS3, Video Coax, etc., are intended to be connected to intra-building (inside plant) link segments that are not subject to lightening transients or power faults. Copper-based media ports such as Twisted Pair (TP) Ethernet, USB, RS232, RS422, RS485, DS1, DS3, Video Coax, etc., are NOT to be connected to inter-building (outside plant) link segments that are subject to lightening transients or power faults.

Troubleshooting

If the media converter fails, isolate and correct the fault by determining the answers to the following questions
and then taking the indicated action:

  1. Is the PWR (power) LED illuminated?
    NO

    • Is the power adapter the proper type of voltage and cycle frequency for the AC outlet?

    • Is the power adapter properly installed in the media converter and in the outlet?

    • Contact Tech Support.
      YES

    • Proceed to step 2.

  2. Is the RXC (copper link) LED illuminated?
    NO

    • Check the twisted-pair copper cables for proper connection.

    • Contact Tech Support.
      YES

    • Proceed to step 3.

  3. Is the LKF (fiber link) LED illuminated?
    NO

    • Check the fiber cables for proper connection.

    • Verify that the TX and RX cables on the media converter are connected to the RX and TX ports,
      respectively, on the other device.

    • If the media converter is connected to another SGETF10xx-1xx using fiber, verify the fiber Auto
      Negotiate is disabled (DIP-switch 5 in the UP position).

    • Contact Tech Support.
      YES

    • Proceed to step 4.

  4. Is the RXC (copper receive) LED flashing?
    NO

    • If there is activity on the 1000Base-T port, disconnect/reconnect the TP copper cable to restart the
      initialization process.

    • Restart the workstation to restart the initialization process.

    • Contact Tech Support.
      YES

    • Contact Tech Support.

Compliance Information

EU Declaration of Conformity

  • Manufacturer’s Name: Lantronics, Inc.
  • Manufacture’s Address: 48 Discovery, Suite 250, Irvine, California 92618 USA
  • Declares that the product(s): SGETF Series Media Converters
  • Part Numbers:
  • SGETF-1013-110, SGETF-1014-110, SGETF-1018-110
  • Conforms to the following Product Regulations: EMC Directive 89/336/EEC
  • Purpose: To declare that the SGETF-110xx-1xx to which this declaration refers is in conformity with the following standards:
  • EN55022: 1994 + A1:1995 + A1:1997; EN 55024:1998 + A1:2001 + A2:2003
  • With the technical construction on file at the above address, this product carries the CE Mark
  • I, the undersigned, hereby declare that the equipment specified above conforms to the above Directive(s) and Standard(s).
  • Place: Irvine, California
  • Date: July 20, 2023
  • Signature: Eric Bass
  • Full Name: Eric Bass
  • Position: Vice President of Engineering

CE Mark

FCC

FCC regulations
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 the user’s own expense.
Canadian regulations
This digital apparatus does not exceed the Class A limits for radio noise for digital apparatus set out on the radio interference regulations of the Canadian Department of Communications. Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la Class A prescrites dans le Règlement sur le brouillage radioélectrique édicté par le ministère des Communications du Canada.

European regulations

Warning
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.
Achtung!
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes Rundfunkstörungen auftreten. In diesem Fäll is der Benutzer für Gegenmaßnahmen verantwortlich

Attention!
Ceci est un produit de Classe A. Dans un environment domestique, ce produit risque de créer des interférences radioélectriques, il appartiendra alors à l’utilsateur de prende les measures spécifiques appropriées. In accordance with European Union Directive 2002/96/EC of the European Parliament and of the Council of 27 January 2003, Lantronix will accept post usage returns of this product for proper  disposal. The contact information for this activity can be found in the ‘Contact Us’ portion of this  document.

CAUTION: RJ connectors are NOT INTENDED FOR CONNECTION TO THE PUBLIC TELEPHONE NETWORK. Failure to observe this caution could result in damage to the public telephone network.

Lantronix Corporate Headquarters

References

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