GDI XC300 User manual

XC300
VDSL Network Extender
Owners Manual

2
Warranty
GDI Communications LLC warrants to the original consumer purchaser that each of its
hardware products, and all components thereof, will be free from defects in materials
and/or workmanship for one (1) year from the date of original purchase and is not
assignable.
In the event of malfunction or other indications of failure attributed directly to faulty
workmanship and/or materials, GDI Communications LLC will, at its option, repair or
replace the defective products or components to whatever extent it shall deem
necessary to restore the product or components to proper operating condition, provided
the consumer purchaser sends with the defective product proof of the date of purchase
of the product. Please note that GDI Communications LLC may replace the defective
product with a new or re manufactured functionally equivalent product of equal value at
the option of GDI Communications LLC.
The customer shall be solely responsible for the failure of any GDI Communications LLC
computer product, or component thereof, resulting from accident, abuse, or
misapplication of the product, and GDI Communications LLC assumes no liability as a
consequence of such events under the terms of this Warranty.
GDI Communications LLC does not warrant the merchantability or fitness of this product
for any particular purpose. This limited warranty is in lieu of any and all other warranties,
expressed or implied.
GDI Communications LLC's liability shall not exceed the price of the defective individual
product, which is the basis for claim. In no event will GDI Communications LLC be liable
for direct, indirect, incidental, or consequential damages resulting from any defect in the
product or in this manual, even if they have been advised of the possibility of such
damages. In no event shall GDI Communications LLC be liable for any loss of profits,
loss of equipment or facilities, or the loss of programs or data, or the cost of recovering
or reproducing the program or data. Some states do not allow the exclusions or limitation
of implied warranties or liability for incidental or consequential damages, so the above
limitations or exclusion may not apply to you.

3
TABLE OF CONTENTS
GENERAL INFORMATION ………………………………………………………….4
FEATURES………………………………………………………………………….4
APPLICATIONS........................................................................……………….5
INSTALLATION………………………………………………………………………..7
CONNECTING TO THE VDSL LINE INTERFACE……………………………..8
CONNECTING THE LAN (ETHERNET) INTERFACE ………………………...9
CONNECTING THE TELEPHONE (POTS/ISDN) LINE ……………………...11
CONNECTING POWER ……………………………………………………….....11
OPERATION...............................................................................………………..12
POWER UP ...........................................................................………………..12
FRONT PANEL LED STATUS MONITORS .........................………………..12
CUSTOMER SERVICE...............................................................………………..14
SERVICE AND UNRESOLVED PROBLEMS........................………………..14
APPENDIX A ……………………………………………………………………….....15
SPECIFICATIONS..................................................................………………..15
APPENDIX B .............................................................................………………..17
FACTORY REPLACEMENT PARTS AND ACCESSORIES ………………..17
APPENDIX C .............................................................................………………..18
INTERFACE PIN ASSIGNMENT ..........................................………………..18

4
GENERAL INFORMATION
Thank you for purchasing this GDI Communications LLC product. The XC300 is the
perfect way to connect disparate Local Area Networks (LAN). There is no special wiring
or special networking knowledge required. Using inexpensive, twisted copper pair wire
the XC300 allows you to connect LANs that are separated by up to 4000ft, breaking the
300ft Ethernet barrier. The XC300 provides reliable high-speed data communication in
the harshest operating environments. It can operate in uncontrolled environments such
as remote terminals or curb side distribution vaults.
Designed to operate in the harshest environments the XC300 has an operating
temperature range of -40°C to +65°C, in non-condensing humidity of up to 95%. It can
be set up at altitudes of up to 10,000 feet.
The XC300NT and XC300LT work together to create a transparent extension between
two Ethernet LANs. POTS/ISDN calls can be made over the VDSL link without
interfering with the data.
This manual has been designed to enable you to install your XC300 extender by
following the step-by-step installation procedure. Follow the step-by-step installation
instructions outlined in Section titled - Installation.
FEATURES
•Easy to install standalone VDSL modems—no configuration required
•Environmentally hardened for operation in harsh environments
•Auto-sensing full or half-duplex Ethernet
•Auto-sensing 10/100 operation
•Extends network connections up to 4,000 ft (1,219 m) over 2-wire 24-AWG
unconditioned lines
•.7 to 26 Mbps symmetric and asymmetric line rate
•Internal POTS/ISDN splitter on board
•Transparent operation
•LED indicators for Power, Ethernet Link & Activity, VDSL Sync
•Surge suppression up to 20 kA
•Available in rack-mount or standalone configurations

APPLICATIONS
The GDI Communications LLC XC300 set provides high-speed LAN connections
between Ethernet LANs, remote PC’s, or any other network enabled 10/100BaseT/TX
device. Operating in pairs with an XC300NT located at one end of the LAN extension
and an XC300LT at the other end. The data is passed transparently through the XC300
such that the remote LAN appears to be co-located with local network. Figure 1 shows a
typical point-to-point application.
The XC300 is well suited to surveillance applications where cameras with digital output
are placed in strategic locations to observe any activity within view of the camera. The
information from the camera can be transmitted to a central collection point up to 4000 ft
away from the camera over inexpensive copper wire. Having the ability to pass voice
communications simultaneously with the high-speed data allows camera positioning
information to be sent without interfering with the data signal. Figure 2 shows a camera
application
5

The XC300 is ideal for building riser applications where distribution of high-speed data
communications in a multi-story building is required. Ordinary communications
equipment is inefficient in this high noise environment. The alternative is to use fiber
optic cable that is expensive; the end-to-end equipment is also expensive. The XC300 is
well suited for this environment. Designed with robust VDSL technology the XC300 can
deliver reliable high-speed communications throughout the multi-story building at a
fraction of the cost of the fiber optic solution.
6

INSTALLATION
Because the XC300 requires no configuration, it can be installed and made
operational quickly. Installation takes place as follows
1. Connecting the VDSL line interface between the units (refer to section titled,
“Connecting the VDSL Line Interface” on page 8) See Figure 4 for the rear panel
connector arrangements.
2. Connecting the Ethernet interface (refer to section titled, “Connecting the LAN
(10/100Base-T) Ethernet Interface” on page 9).
3. Connecting the POTS to a telephone or telephone line (refer to the section titled
“Connecting the POTS/ISDN line” on page 11)
4. Connecting the power plug (refer to section titled, “Connecting Power” on page 11).
XC300
7

CONNECTING TO THE VDSL LINE INTERFACE
The XC300 supports communication between two Ethernet LAN sites over a distance of
up to 4,000 ft (1,219 m) over 24 AWG (0.5 mm) twisted-pair wire. Actual distance and
link performance may vary depending on the environment and type or gauge of wire
used.
Follow the steps below to connect the XC300 VDSL Interfaces.
The XC300 is a pair of units. One of the units must be an XC300NT, and the other unit
must be an XC300LT. It does not matter which end is the XC300NT and which is the
XC300LT. The XC300LT always initiates the link. As long as the XC300NT is powered
on, the XC300LT can establish a link by being powered ON or by a power reset.
To function properly, the units must be connected together using twisted-pair,
unconditioned, metal wire, between 19 (0.9mm) and 26 AWG (0.4mm). Leased circuits
that run through signal equalization equipment are not acceptable. The interface is
bipolar making the TIP and RING connection non-critical.
XC300(RJ11) VDSL Line Interface
8

CONNECTING THE LAN (ETHERNET) INTERFACE
The RJ-45 port labeled “LAN” is the 10/100BaseT/TX interface. This port is designed to
connect directly to a 10/100BaseT/TX network. Figures 6 & 7 show the signal/pin
relationships on this interface. You may connect this port to another Ethernet device via
a Cat 3 or Cat 5 cable that is up to 328 ft long.
TX+ (data output from XC300)
TX- (data output from XC300)
RX+ (data input to XC300)
(
No Connection
)
(
No Connection
)
RX- (data input to XC300)
(
No Connection
)
(
No Connection
)
XC300NT LAN (10/100BaseT/TX) RJ45 Connector Pin-out
RX- (data input to XC300)
RX+ (data input to XC300)
TX+ (data output from XC300)
(
No Connection
)
(
No Connection
)
TX- (data output from XC300)
(
No Connection
)
(
No Connection
)
XC300LT LAN (10/100BaseT/TX) RJ45 Connector Pin-out
Connecting the LAN (10/100BaseT/TX) Ethernet Port to a Hub
The XC300NT 10/100BaseT/TX interface is configured as DTE (Data Terminal
Equipment), just like a 10/100BaseT/TX network interface card in a PC. Therefore, it
"expects" to connect to a DCE (Data Communications Equipment) device such as a
Hub. This typically uses a straight-through cable. The Figure 8 diagram shows the cable
wiring for connecting the XC300NT to a 10/100BaseT/TX hub.
9

The XC300LT 10/100BaseT/TX interface is configured as DCE (Data Communications
Equipment), just like a 10/100BaseT/TX network hub. Therefore, it "expects" to connect
to a DTE (Data Terminal Equipment) device such as a PC. This typically uses a
crossover cable. The Figure 9 diagram shows the cable wiring for connecting the
XC300LT to a 10/100BaseT/TX hub.
XC300NT LAN (10/100BaseT/TX) Port 10/100BaseT/TX Hub
Figure 8.
10/100BaseT/TX straight through cable
Connecting the LAN (10/100BaseT/TX) Ethernet Port to a PC (DTE)
The XC300 LAN (10/100Base-T) interface is configured as DTE (Data Terminal
Equipment). If you wish to connect the XC300 to another DTE device such as network
interface card (NIC) in a PC (or XC300 in a back-to-back arrangement), you must use a
crossover cable as shown in Figure 9.
XC300LT LAN (10/100BaseT/TX) Port 10/100BaseT/TX
Figure 9.
10/100BaseT/TX crossover cable
NOTE: When connecting to a 10/100BaseT/TX Switch that is equipped with crossover
detection it is not necessary to use a crossover cable from the XC300LT to the switch.
The need to crossover will be automatically detected within the switch and the
connection will be made.
10

CONNECTING THE TELEPHONE (POTS/ISDN) LINE
The RJ 11 port labeled “PHONE” is the TELEPHONE or POTS/ISDN interface. A
telephone or an ISDN device may be connected to this port and carried over the VDSL
line. The XC300 does not need to be powered ON for the POTS interface to work. The
RJ 11 connector in the XC300 PHONE interface is wired as shown in Figure 10.
Figure 10.
XC300 PHONE (RJ 11, POTS/ISDN) interface
CONNECTING POWER
An external AC cube style power supply is available. Power to the XC300 is connected
using the barrel jack on the rear panel. No configuration is necessary for the power
supply. DC power supplied must meet the following requirements; DC power must be
regulated +5VDC ±5%, 1.0A minimum. Center pin is +5V. The barrel type plug has a
2.5/5.5/10mm I.D./O.D./Shaft Length dimensions. The XC300 does not have a power
switch, it powers up as soon as it is plugged in.
11

OPERATION
Once the XC300 is properly installed, the set should operate transparently. No user
settings are required. This section describes the LED status monitors.
POWER UP
Before applying power to the XC300, please review section titled, “Connecting Power” to
verify that the unit is connected to the appropriate power source.
FRONT PANEL LED STATUS MONITORS
The XC300 features four front panel LEDs that monitor power, the Ethernet signals, and
the VDSL Connection. Figure 11 shows the front panel location of each LED. Table 1
describes the LED functions.
XC300
Figure 11
XC300 Front Panel LED location
12

13
LED Description
LED Indication
Powe
r
Solid GREEN to indicate the unit is
p
owered ON.
VDSL Sync (Active Green) Solid green (ON) to indicate that the end-to
end VDSL link between the XC300 set is established. The
VDSL LED is OFF when the link is down.
Ethernet “Good
Link” (Active Green) Solid Green indicates that Ethernet link has been established.
Ethernet
“Activit
y
” (Active Yellow) Flashes to indicate Ethernet activity on the 10/100Base-T Ethernet
p
ort.
Table 1:
Front Panel LED Description

14
CUSTOMER SERVICE
SERVICE AND UNRESOLVED PROBLEMS
For assistance, phone GDI Communications LLC’s Customer Service Department
between 7:00 A.M. and 3:30 P.M. Pacific Time at [phone] or FAX (775) 345-
8010.
When calling for assistance try to do so from the installation site, we have a better
chance to successfully troubleshoot your installation and getting your installation up
and running.
Before returning a product for repair, you must call GDI Communications LLC’s
Customer Service Department and receive a Returned Material Authorization (RMA)
number. This number must appear on the outside of the shipping container with the
address as indicated below. Products should be returned to:
GDI COMMUNICATIONS LLC, INC
280 I-80 West Exit 1
Verdi, NV 89439
Attention: Customer Service-RMA #
To ensure accurate return of repaired/replaced product, please enclose a note with
the returned item; with your name, company name, mailing address, telephone
number, RMA number and any special instructions.
During the first year after the date of purchase, all labor and materials will be provided
without charge. There shall be no warranty for either parts or labor after the expiration of
one year from the date of purchase or if in GDI Communications LLC’s sole discretion
the product has been deemed to be modified or abused.
Units must be returned postage prepaid, CODs will not be accepted! It is recommended
that the unit be insured when shipped. Units returned without proof of date-of-purchase
or out-of-warranty units will be repaired or replaced (at the option of GDI
Communications LLC) and a charge will be made for parts and labor.
Products repaired/replaced under warranty will be returned to any destination within
the USA at GDI Communications LLC’s expense. The carrier and method of shipment
will be determined by GDI Communications LLC.
If the customer requests a specific form of conveyance or is located beyond the USA
borders or if the unit is out-of-warranty, all shipping costs will be incurred by the
customer.

15
APPENDIX A
SPECIFICATIONS
CONNECTORS
LAN: Shielded or Unshielded RJ-45, 10/100Base-T, IEEE 802.3 Ethernet
VDSL: RJ 11
PHONE (POTS): RJ 11
VDSL ENVIRONMENT
LINE: 19 to 26 AWG (0.5 mm) twisted-pair wire
LINE RATE: 1 to 25 Mbps, symmetric or asymmetric
DISTANCE: Up to 4,000 ft (1,219 m)
LED INDICATORS
Power (Green)
VDSL Sync (Green)
Ethernet Good Link (Green)
Ethernet Activity (Yellow)
POWER SUPPLY
External AC power cube 90 to 240 VAC, 47 to 63Hz, 2 Watt
OPERATING ENVIRONMENT
TEMPERATURE RANGE: -40°C to +65°C
HUMIDITY: Up to 95% non-condensing
DIMENSIONS
1.5H x 3.8W x 5.0D in. (3.8H x 9.6W x 12.6D cm)
MOUNTING
Metal enclosure with wallmount tabs.
Rubber feet for table mount.

16
APPROVALS FCC NOTICE
The XC300 generates and uses radio frequency energy, and if not properly installed and
used in strict accordance with the manufacturer’s instructions it may cause interference
to radio and television reception. The XC300 has been tested and found to comply with
Class A computing device in accordance with specifications in Subpart B of Part 15 of
FCC rules. However, there is no guarantee that interference will not occur in a particular
installation.

17
APPENDIX B
FACTORY REPLACEMENT PARTS AND ACCESSORIES
GDI Communications LLC Model Description
Model Description
XC300LT VDSL Modem, voice & data
XC300NT VDSL Modem, voice & data
XC300 VDSL MODEM SET, Kit: includes one XC300LT and one
XC300NT, voice & data,
NTPS 90-240VAC (+5V reg. DC/1A) Universal Input Adapter.

APPENDIX C
INTERFACE PIN ASSIGNMENT
LAN (ETHERNET 10/100BASET/TX) INTERFACE: RJ-45 UTP/STP
VDSL LINE INTERFACE: RJ-11
PHONE (POTS/ISDN) INTERFACE: RJ-11
POWER JACK
Center pin: regulated +5VDC ±5%, 1.0A minimum
Outer ring: Common or Ground
CONSOLE PLUG: FRONT PANEL ACCESS (for models equipped with front
panel access)
Pin 1: VCC
Pin 2: TX
Pin 3: RX
Pin 4: GND
CONSOLE CABLE WITH DB 9 PLUG:
18

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Copyright © 2003
GDI Communications LLC
All Rights Reserved.