Black Box FX6412OA User manual

CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
JULY 1999
FX6412OA
FX6824OA
FX1236OA
FX1648OA
SW1
POWER
1 8
LINE
1 2 3 4
PORT
1 2 3 4 5 6 7 8 9 10 11 12
Commercial Phone Line Manager XLO 4x12
Plug and Play Commercial Phone Line
Manager XLO (Outgoing Only): 4 x 12;
8 x 24; 12 x 36; 16 x 48

1
FCC STATEMENT
FEDERAL COMMUNICATIONS COMMISSION
AND
INDUSTRY CANADA
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio frequency energy and if not
installed and used properly, that is, in strict accordance with the manufacturer’s
instructions, may cause interference to radio communication. It has been tested
and found to comply with the limits for a Class A computing device in accordance
with the specifications in Subpart J of Part 15 of FCC rules, which are designed to
provide reasonable protection against such interference when the equipment is
operated in a commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct the
interference.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from
digital apparatus set out in the Radio Interference Regulation of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industrie Canada.

2
PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
FCC REQUIREMENTS FOR
TELEPHONE-LINE EQUIPMENT
1. The Federal Communications Commission (FCC) has established rules
which permit this device to be directly connected to the telephone network
with standardized jacks. This equipment should not be used on party lines
or coin lines.
2. If this device is malfunctioning, it may also be causing harm to the
telephone network; this device should be disconnected until the source of
the problem can be determined and until the repair has been made. If this
is not done, the telephone company may temporarily disconnect service.
3. If you have problems with your telephone equipment after installing this
device, disconnect this device from the line to see if it is causing the
problem If it is, contact Black Box or an authorized agent.
4. The telephone company may make changes in its technical operations and
procedures. If any such changes affect the compatibility or use of this
device, the telephone company is required to give adequate notice of the
changes.
5. If the telephone company requests information on what equipment is
connected to their lines, inform them of:
a. The telephone number that this unit is connected to.
b. The ringer equivalence number.
c. The USOC jack required: RJ-11C.
d. The FCC registration number.
Items (b) and (d) can be found on the unit’s FCC label. The ringer
equivalence number (REN) is used to determine how many devices can be
connected to your telephone line. In most areas, the sum of the RENs of all
devices on any one line should not exceed five (5.0). If too many devices
are attached, they may not ring properly.
6. In the event of an equipment malfunction, all repairs should be performed
by Black Box or an authorized agent. It is the responsibility of users
requiring service to report the need for service to the supplier or to an
authorized agent.

3
CANADIAN MODEM STATEMENT
CERTIFICATION NOTICE FOR
EQUIPMENT USED IN CANADA
The Canadian Department of Communications label identifies certified
equipment. This certification means that the equipment meets certain
telecommunications-network protective, operation, and safety requirements.
The Department does not guarantee the equipment will operate to the user’s
satisfaction.
Before installing this equipment, users should ensure that it is permissible
to be connected to the facilities of the local telecommunications company.
The equipment must also be installed using an acceptable method of
connection. In some cases, the company’s inside wiring associated with a
single-line individual service may be extended by means of a certified
connector assembly (extension cord). The customer should be aware that
compliance with the above conditions may not prevent degradation of service
in some situations.
Repairs to certified equipment should be made by an authorized Canadian
maintenance facility—in this case, Black Box. Any repairs or alterations made
by the user to this equipment, or equipment malfunctions, may give the
telecommunications company cause to request the user to disconnect the
equipment.
Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone lines, and internal metallic water
pipe system, if present, are connected together. This precaution may be
particularly important in rural areas.
CAUTION:
Users should not attempt to make such connections themselves, but
should contact the appropriate electric inspection authority, or
electrician, as appropriate.
The LOAD NUMBER (LN) assigned to each terminal device denotes the
percentage of the total load to be connected to a telephone loop which is
used by the device, to prevent overloading. The termination on a loop may
consist of any combination of devices, subject only to the requirement that
the total of the load numbers of all the devices does not exceed 100.

4
PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
NORMAS OFICIALES MEXICANAS (NOM)
ELECTRICAL SAFETY STATEMENT
INSTRUCCIONES DE SEGURIDAD
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes
de que el aparato eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberán ser guardadas para
referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones
de operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca
de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales
que sean recomendados por el fabricante.
7. El parato eléctrico debe ser montado a la pared o al techo sólo como sea
recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá
a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser
referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no
interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,
alfombra o superficie similar puede bloquea la ventilación, no se debe colocar
en libreros o gabinetes que impidan el flujo de aire por los orificios de
ventilación.

5
NOM STATEMENT
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor
como radiadores, registros de calor, estufas u otros aparatos (incluyendo
amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del
tipo descrito en el instructivo de operación, o como se indique en el aparato.
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización
del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que no
sean pisados ni pellizcados por objetos colocados sobre o contra ellos,
poniendo particular atención a los contactos y receptáculos donde salen
del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las
recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas
de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea
usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean
derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio
en su desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.

6
PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
TRADEMARKS
The trademarks mentioned in this manual are the sole property of their owners.

7
CONTENTS
CONTENTS
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Connecting the Telephone Lines and IST Devices . . . . . . . . . . . . 12
3.2 Setting the Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Connecting the AC Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Incoming Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Outgoing Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Data-Transmission Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4 Power Failure Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Non-Volatile Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1 Common Problems and Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2 Calling Black Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.3 Shipping and Packaging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Appendix: Connection Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8
PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
1. Specifications
User Connections — All models: Mini jack for power supply;
FX6412OA: (4) RJ-11 modular jacks for telephone lines, (12) RJ-11 modular
jacks for industry-standard telephone devices;
FX6824OA: (8) RJ-11 modular jacks for telephone lines, (24) RJ-11 modular
jacks for industry-standard telephone devices;
FX1236OA: (12) RJ-11 modular jacks for telephone lines, (36) RJ-11 modular
jacks for industry-standard telephone devices;
FX1648OA: (16) RJ-11 modular jacks for telephone lines, (48) RJ-11 modular
jacks for industry-standard telephone devices
Indicators — FX6412OA: (4) telephone line-in-use LEDs, (12) industry-standard
telephone device-in-use LEDs, (1) Power-on LED; FX6824OA: (8) telephone
line-in-use LEDs, (24) industry-standard telephone device-in-use LEDs,
(1) Power-on LED; FX1236OA: (12) telephone line-in-use LEDs, (36) IST
device-in-use LEDs, (2) Power-on LEDs; FX1648OA: (16) telephone line-in-use
LEDs, (48) IST device-in-use LEDs, (2) Power-on LEDs
Compliance — FCC Part 68 registered; FCC Part 15 registered; Ringer
Equivalence 0.7B; UL listed 81J1, E81356, CSA power supply
Power — Wallmount AC adapter; 9V, 1 A, 115 VAC, 60 Hz; UL®and CSA
NOTE
12 x 36 and 16 x 48 Phone Line Manager models use two power
supplies.
Size — FX6412OA: 2.45"H x 11.45"W x 10.2"D (6.2 x 29.1 x 25.9 cm);
FX6824OA: 4.25"H x 11.45"W x 10.2"D (10.8 x 29.1 x 25.9 cm;
FX1236OA: 5.25"H x 19"W x 10.2"D (13.3 x 48.3 x 25.9 cm);
FX1648OA: 7"H x 19"W x 10.2"D (17.8 x 48.3 x 25.9 cm)
Weight — FX6412OA: 5 lb. (2.3 kg);
FX6824OA: 8 lb. (3.6 kg);
FX1236OA: 11 lb. (4.9 kg);
FX1648OA: 14 lb. (6.4 kg)

9
CHAPTER 2: Introduction
2. Introduction
2.1 Description
The Plug and Play Phone Line Manager XLO is designed to allow a company to
use the smallest number of outgoing telephone lines required to support the
maximum number of industry-standard telephone (IST) devices. An IST is any
type of telecommunications device that works on a standard telephone-company
telephone line, such as modems, fax machines, fax/modems, credit-card terminals,
etc. The Plug and Play Phone Line Manager XLO can save a company hundreds to
thousands of dollars per year in telephone line installation costs and recurring
monthly line charges.
The Plug and Play Phone Line Manager XLO can work with any type of
standard telephone line—POTS (Plain Old Telephone Service), Centrex, touch-
tone or rotary. Any industry-standard telephone device can function on the Phone
Line Manager as if it were on its own dedicated line. The Phone Line Manager can
connect directly to dedicated telephone lines, use a minimum number of outgoing
telephone lines with any type of telephone system, or share industry-standard
telephone extensions on any telephone system.
The Plug and Play Phone Line Manager XLO 4 x 12 can support up to twelve
(12) IST devices and four (4) telephone lines. The Plug and Play Phone Line
Manager XLO 8 x 24 can support up to twenty-four (24) IST devices and eight (8)
telephone lines. The Plug and Play Phone Line Manager XLO 12 x 36 can support
up to thirty-six (36) IST devices and twelve (12) telephone lines. The Plug and Play
Phone Line Manager XLO 16 x 48 can support up to forty-eight (48) IST devices
and sixteen (16) telephone lines.
The Plug and Play Phone Line Manager XLO is an electronic switch and has
been designed for durability and ease of maintenance, but some care should be
taken when handling it. Do not expose the Phone Line Manager to high humidity
or extreme electrical fields. As with all electronic devices, you should take
precautions against static electricity.
The Plug and Play Phone Line Manager XLO is designed for analog telephone
line switching in the U.S. and Canada only. The switching is accomplished using
metallic contacts to ensure no degradation of the signal, for any suitable appli-
cation. You can be sure that any device that works directly with an analog phone
line will work equally well through the Plug and Play Phone Line Manager XLO.

10
PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
2.2 Unpacking
Verify that your package includes the following items:
• Plug and Play Phone Line Manager XLO 4 x 12, 8 x 24, 12 x 36 (includes
one 4 x 12 and one 8 x 24), or 16 x 48 (includes two 8 x 24 units)
• Wallmount AC adapter (12 x 36 and 16 x 48 models supplied
with two adapters)
• Rubber feet and hook & loop fastener
• This user manual
FX1236OA and FX1648OA will also include:
• One 11.45" x 10.2" black finished steel 0.090" shelf
• One 19" W black finished steel 0.125" shelf faceplate
• Four truss-head screws, 10-32, 3⁄8" long
• Six truss-head screws, 10-32, 1⁄2" long
• Four nylon insert nuts, 10-32
• Shelf assembly instructions
If anything is missing, please contact Black Box immediately.

11
CHAPTER 3: Installation
3. Installation
Before installing the Plug and Play Phone Line Manager XLO, select an
appropriate location away from direct sources of heat or cold. The Plug and Play
Phone Line Manager XLO can be stacked on a desk or table, or mounted vertically
on a wall. Typically, the Plug and Play Phone Line Manager XLO is located in the
same area as other computer network or telephone equipment. All device and
power connections are made in the rear of the unit. Do not connect lines to or
disconnect them from the Plug and Play Phone Line Manager XLO while power is on.
The 12 x 36 Phone Line Manager and 16 x 48 Phone Line Manager units
mount in a 19" rack. First, locate the four pre-drilled holes in the bottom of the
faceplate and front of the shelf. Align the faceplate holes with the shelf holes and
then insert the screws through the holes. Place the nylon insert nuts onto the back
of the screws. Tighten the screws until hand-tight. You can now mount the shelf in
a standard 19" rack using the supplied 10-32, 1⁄2" long truss-head screws. Once the
shelf is mounted, you can place the Phone Line Manager units onto the shelf with
front panel LEDs facing forward or with the RJ-11 connectors facing forward for
patch-panel applications.
We have included both self-adhesive feet and an adhesive-backed hook & loop
fastener. The feet are useful when the unit will be resting on a flat surface. The
hook & loop fastener is useful when mounting the unit to a wall or other vertical
surface. You can also use the hook & loop fasteners to provide rackmount stability
between the two units in the 12 x 36 and 16 x 48 models. To use the hook & loop
fastener, keep the hook and loop halves together while peeling the plastic backing
from one side and stick it to one of the bottom corners of the unit. Repeat the
process for all four corners. Now peel the remaining plastic backing from the hook
and loop halves. Carefully line the Plug and Play Phone Line Manager XLO up
where you want to mount it and press the unit firmly to the mounting surface.
Once installed using the hook & loop fastener, the unit may be removed from the
mounting surface by grasping the unit and pulling firmly away from the mounting
surface. To remount, align the hook & loop halves together and press firmly
together.

12
PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
3.1 Connecting the Telephone Lines and IST Devices
NOTE
In the following description and throughout this manual, the first
number listed refers to the LINE and IST Ports available on the Plug and
Play Phone Line Manager XLO 4 x 12. The second number (listed in
parentheses) refers to the LINE and IST Ports available on the Plug and
Play Phone Line Manager XLO 8 x 24. The 12 x 36 model is actually a 4 x
12 Phone Line Manager and an 8 x 24 Phone Line Manager. The 16 x 48
model is actually two 8 x 24 Phone Line Managers. The 12 x 36 and 16 x
48 models can be used as two separate Phone Line Manager units or
networked together as explained in Section 3.1.1, Networking Multiple
Phone Line Manager Units Together.
Connect your telephone lines to the LINE Ports numbered 1 through 4 (8),
starting with LINE Port 1. If connecting fewer than 4 (8) lines, leave the higher-
numbered LINE Ports unconnected. Similarly, connect the RJ-11 modular line
cords from your IST devices to the desired IST Ports, starting with IST Port 1. If
connecting fewer than 12 (24) IST devices, leave the higher-numbered IST Ports
unconnected.
Table 3-1. Primary Outgoing Connections.
4 x 12 Model 8 x 24 Model
LINE Port IST Port LINE Port IST Port
11 11
22 22
33 33
44 44
513
614
715
816

13
CHAPTER 3: Installation
3.1.1 N ETWORKING M ULTIPLE L INESHARE U NITS T OGETHER
The Phone Line Managers can be networked together to provide additional IST
device ports, telephone line ports, or both. The networking method you choose
will depend on the quantity of IST devices, the telephone line use, and the
application. Please note that the following examples use 4 x 12 units. The same
connections apply to 4 x 12 or 8 x 24 units. If you have further questions about a
networking application or need assistance in setting the DIP switches on the Phone
Line Manager in a networked application, please contact Black Box Technical
Support at 724-746-5500.
Example #1: Providing Additional IST Device Ports
When an application requires more IST ports than one Phone Line Manager can
provide, two or more Phone Line Manager units can be networked together, by
connecting IST ports on the first Phone Line Manager to the line ports on the
second Phone Line Manager. Providing more than one networking connection
between the two Phone Line Manager units will permit more than one IST device
on the second Phone Line Manager to simultaneously access the telephone lines
on the first Phone Line Manager. A 3 to 1 ratio of devices to lines is typical. Your
particular application may be different. The goal is to be able to provide dial tone
and outbound call capability to all outbound IST devices. Networking two 4 x 12
units together in this manner will effectively create a 4 x 20 Phone Line Manager.
Networking two 8 x 24 Phone Line Managers together will create an 8 x 40 Phone
Line Manager, while networking three 8 x 24 Phone Line Managers together will
create an 8 x 56 Phone Line Manager.
Figure 3-1. 4 x 20 Network Application.
4 x 12 LineShare (1st) 4 x 12 LineShare (2nd)
4 Telephone
Lines
8 IST
Devices
12 IST
Devices
Network
Links
4 x 12 Phone Line Manager (1st) 4 x 12 Phone Line Manager (2nd)

14
PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
In the previous example, IST devices on the first and the second Phone Line
Manager will have equal outbound access to the four telephone lines since four
network links have been provided.
Example #2: Providing Additional Line Ports and Device Ports
If the quantity of telephone lines and IST devices that are required for your
application exceeds the capacity of one Phone Line Manager, then two or more
Phone Line Manager units can be “networked” together. In this application, to
increase the Phone Line Manager capacity to handle the quantity of lines and
device ports you need, connect one half of the telephone lines to the first Phone
Line Manager and the other half of the telephone lines to the second Phone Line
Manager while leaving at least one Line port and one IST port open on each
Phone Line Manager for networking. By connecting Line Port #1 on the first
Phone Line Manager to the last IST port on the second Phone Line Manager and
by connecting Line Port #1 on the second Phone Line Manager to the last IST port
on the first Phone Line Manager, an outgoing call from any IST port can access
the telephone lines on any networked Phone Line Manager.
Networking two Phone Line Manager units together in this manner will allow
an IST device to search and gain access to an available telephone line connected to
either Phone Line Manager. Networking two 4 x 12 units together will effectively
create a 6 line x 22 IST port Phone Line Manager. Networking two 8 x 24 Phone
Line Managers together will create a 14 x 46 Phone Line Manager, while
networking three 8 x 24 units will create a 21 x 69 Phone Line Manager.
Figure 3-2. 6 x 22 Networked Application.
4 x 12 LineShare (1st) 4 x 12 LineShare (2nd)
Link
3 Telephone
Lines
3 Telephone
Lines
11 IST
Devices 11 IST
Devices
Link
4 x 12 Phone Line Manager (1st) 4 x 12 Phone Line Manager (2nd)

15
CHAPTER 3: Installation
In the previous example, IST devices on the first and the second Phone Line
Manager will have equal outbound access to the three telephone lines on their
own Phone Line Manager. The fourth outbound call will be networked to the
other Phone Line Manager and have access to those three telephone lines over the
network link that is provided.
The RJ-11 jacks on the back panel labeled DATA are for field service and
diagnostic use only, and should be left unconnected in the Plug and Play Phone
Line Manager XLO setup.
3.2 Setting the Switches
Table 3-2. SW1 Configuration
Ln 1 Ln 2 Ln 3 Ln 4 Ln 1 Ln 2 Ln 3 Ln 4
SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 SW1-7 SW1-8
Line ON ON ON ON
Present
Ln Not OFF OFF OFF OFF
Present
Table 3-3. SW2 Configuration
Ln 5 Ln 6 Ln 7 Ln 8 Ln 5 Ln 6 Ln 7 Ln 8
SW2-1 SW2-2 SW2-3 SW2-4 SW2-5 SW2-6 SW2-7 SW2-8
Line ON ON ON ON
Present
Ln Not OFF OFF OFF OFF
Present

16
PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
The Line Present/Not Present settings determine which of the lines are
checked for purposes of outgoing line access. When a device connected to an IST
Port goes off-hook, the Plug and Play Phone Line Manager XLO will search for an
available line. The Line Present/Not Present settings determine which of the lines
are checked for purposes of outgoing line access. When a device connected to an
IST Port goes off-hook, the Plug and Play Phone Line Manager XLO will search for
an available line. The Phone Line Manager always searches the higher-numbered
LINE Ports first. Example: If four (4) lines are connected to the Phone Line
Manager, the Phone Line Manager will check LINE Port 4 first, then LINE Port 3,
then LINE Port 2, etc. The only exception to this is the first IST Ports (those IST
Ports that have a corresponding line connected to them). These IST Ports check
their “own” line first. Example: IST Port 2 checks for line availability (dial tone) on
LINE Port 2 first. If LINE Port 2 is not available (another device is using it), the
Phone Line Manager will check LINE Port 4, then LINE Port 3, etc. If all lines are
in use, then the requesting IST Port will get no dial tone to indicate no line
available.
If a telephone line is connected to a LINE Port, the corresponding switch
should be in the “ON” position. Each “line present” switch is factory-set initially in
the “ON” position. If a LINE Port has no line connected to it, the “line present”
switch should be set to the “OFF” position.
3.3 Connecting the AC Adapter
Lastly, plug the supplied wall-mount AC adapter into a suitable electrical
receptacle, and plug the mini-plug into the power outlet receptacle on the back of
the Plug and Play Phone Line Manager XLO. To protect the Plug and Play Phone
Line Manager XLO from electrical surges and brownouts, we recommend that you
use an electrical surge protector.
The Plug and Play Phone Line Manager XLO will illuminate all the front-panel
LEDs to indicate a self-test, and will then leave the POWER LED illuminated if the
self-test is successful. If the POWER LED does not stay on (all the LEDs turn on
and then back off), remove power, check all your connections and re-apply power.
If the problem repeats, see the troubleshooting information at the end of this
document.

17
CHAPTER 4: Operation
4. Operation
4.1 Incoming Calls
The Outgoing only units (FX6412OA, FX6824OA, FX1236OA, and FX1648OA)
do not support incoming call applications. The units were designed for outbound
calling only.
4.2 Outgoing Calls
Any IST device connected to a port on the Plug and Play Phone Line Manager
XLO can access dial tone to make an outbound call. The number of IST devices
that can be in use simultaneously is equal to the number of telephone lines
connected to the Plug and Play Phone Line Manager XLO. See the chart in
Section 3.1 for primary IST to Line Port connections.
Outgoing calls will cause the IST Port LED and the Line Port LED to light solid.
If none of the line ports are available (busy on another call with another IST port),
then the originating outgoing IST Port LED will flash until an outgoing line port
does become available. If any of the line ports have line present switch (SW1
and/or SW2) set to on, and there is no line attached, the Line Port LED will flash
and then pass the call to the next line port. When an available line port is accessed,
both the IST Port and the Line Port LEDs will light solid and remain on
throughout the duration of the call.
When an IST device hangs up (goes on-hook) and terminates the outgoing call,
the IST Port LED will go out first and the Line Port LED will flash for 3 seconds (to
allow the line to stabilize) before another IST Port can access the line for dial tone
and outgoing calls.
4.3 Data-Transmission Speed
The Plug and Play Phone Line Manager XLO is transparent to speed. It has been
designed to transmit data at the highest level of speed allowable on a business
telephone line.

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PLUG AND PLAY PHONE LINE MANAGER XLO (OUTGOING ONLY)
4.4 Power Failure Transfer
The Plug and Play Phone Line Manager XLO provides straight-through
connections of all lines on power-off. The following outlines the power-failure
connections.
Table 4-1. Power-Failure Connections.
LINE Port IST Port
11
22
33
44
513
614
715
816
The number of telephone lines connected to the Plug and Play Phone Line
Manager XLO determines the number of straight-through power failure
connections available.
4.5 Non-Volatile Memory
The Plug and Play Phone Line Manager XLO retains its programming during
power outages and while the Plug and Play Phone Line Manager XLO is
electrically unplugged. When the electrical power comes on, the Plug and Play
Phone Line Manager XLO is ready to go.

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CHAPTER 5: Troubleshooting
5. Troubleshooting
If you encounter a problem when you install or operate the Plug and Play Phone
Line Manager XLO unit, please review this section for likely causes and what to do
if you eliminate these possibilities, and the problem continues to occur.
5.1 Common Problems and Solutions
Problem 1—Power LED does not light.
Check whether the power supply is properly connected to the power receptacle on
the back panel of the Plug and Play Phone Line Manager XLO. Also, check
whether the power supply is connected to a live power outlet. Verify that the power
supply connected to the Plug and Play Phone Line Manager XLO is the original
power supply provided with the Plug and Play Phone Line Manager XLO.
Problem 2—IST Port receives no dial tone when going “OFF Hook.”
First, determine whether a LINE Port is available (not being used by another IST
Port). Second, check the switch settings on the front panel of the Plug and Play
Phone Line Manager XLO. All switch settings corresponding to the Line
Present/Not Present switches should be in the “ON” position for each LINE Port
that a live telephone line is connected to. The Line Present/Not Present switches
should be in the “OFF” position for each LINE Port that does not have a live
telephone line connected to it. Third, check the telephone line before it is
connected to the Plug and Play Phone Line Manager XLO for dial tone. Fourth,
verify that the telephone line cords connected to the LINE Ports and IST Ports are
working properly.
Problem 3—Modem or other IST device does not access dial tone on outgoing calls.
Check all connections for proper installation. Determine whether the IST Port that
the modem is connected to is operating properly. Do this by connecting a standard
telephone to that port. If you receive dial tone when going “OFF Hook” with the
telephone, the Plug and Play Phone Line Manager XLO is operating properly.
Check the Operations/User’s Manual of the modem or other IST device for
proper operating procedures for that device. Try all of the troubleshooting
solutions listed in Problem 2.