Black Box MC115A User manual

1
FCC REQUIREMENTS
FCC REQUIREMENTS FOR
TELEPHONE-LINE EQUIPMENT
This device has been granted a registration number
by the Federal Communications Commission (FCC),
under Part 68 rules and regulations for direct
connection to the telephone lines. In order to
comply with these FCC rules, the following
instructions must be carefully read and applicable
portions followed completely. These instructions
must be supplied to the consumer.
1. This equipment complies with Part 68 of the FCC
rules. A label located on the outside surface of this
equipment contains, among other information,
the FCC registration number and ringer
equivalence number (REN). If requested, this
information must be provided to the telephone
company.
2. As indicated below the suitable jack (USOC
connecting arrangement) for this equipment is
shown. If applicable, the facility interface codes
(FIC) and service order codes (SOC) are shown.
3. The ringer equivalence number (REN) is used to
determine the quantity of devices which may be
connected to the telephone line. Excessive RENs

2
MOBILE LINC-UP
on the telephone line may result in the devices not
ringing in response to an incoming call. In most,
but not all areas, the sum of the RENs should not
exceed five (5.0). To be certain of the number of
devices that may be connected to the line, as
determined by the total RENs, contact the
telephone company to determine the maximum
REN for the calling area.
4. If this equipment causes harm to the telephone
network, the telephone company will notify you in
advance. But if advance notice is not practical, the
telephone company will notify the customer as
soon as possible. Also, you will be advised of your
right to file a complaint with the FCC if you
believe it is necessary.
5. The telephone company may make changes in its
facilities, equipment, operations, or procedures
that could affect the operation of the equipment.
If this happens, the telephone company will
provide advance notice in order for you to make
necessary modifications in order to maintain
uninterrupted service.
6. If trouble is experienced with this equipment,
please contact the service center for repair and/
or warranty information. If the trouble is causing
harm to the telephone network, the telephone

3
FCC REQUIREMENTS
company may request you to remove the
equipment from the network until the problem
is resolved. User repairs must not be made, and
doing so will void the warranty.
7. This equipment cannot be used on coin service
provided by the telephone company. Connection
to party line service is subject to state tariffs.
(Contact your state public utilities commission
for information). If so required, this device is
hearing-aid compatible (EAC).

4
MOBILE LINC-UP
TRADEMARKS USED IN THIS MANUAL
Macintosh is a registered trademark of Apple
Computer, Inc.
AT&T, Horizon, Merlin, and Trimline are registered
trademarks of AT&T.
Toshiba is a registered trademark of Toshiba
Corporation.
Siemens is a registered trademark of Siemens
Aktiengesellschaft.
Panasonic is a registered trademark of Matsushita
Electric Industrial Co., Ltd.
Northern Telecom is a registered trademark of
Nortel Networks.
Harris is a registered trademark of Harris
Corporation.
Eagle is a registered trademark of Eagle Computer
Company, Incorporated.
Fujitsu is a registered trademark of Fujitsu Limited.

5
TRADEMARKS
Rolm is a registered trademark of IBM Corporation.
Hayes is a registered trademark of Zoom
Telephonics, Inc.
All applied-for and registered trademarks are the
property of their respective owners.

6
MOBILE LINC-UP
Contents
Chapter Page
1. Specifications ........................................................8
2. Introduction ..........................................................9
2.1 Description..................................................9
2.2 Features ......................................................9
2.3 Package Contents ....................................10
2.4 Preinstallation Guidelines........................10
3. Installation ..........................................................12
3.1 Connecting the Mobile Linc-Up
to a Phone ................................................12
3.2 Battery Replacement ................................14
3.2.1 Battery Removal ............................14
3.2.2 Battery Installation ........................15
4. Level Switch ........................................................18
5. Sending Data and Faxes......................................27
5.1 Autodialing Data and Fax Calls ..............27
5.2 Dialing Data Calls Manually ....................28
5.3 Dialing Fax Calls Manually ......................31
6. Receiving Data and Faxes ..................................33
6.1 Receiving a Data File ................................33
6.2 Receiving a Fax Document ......................35

7
Chapter Page
7. Operating Tips ....................................................36
7.1 Powering the Mobile Linc-Up..................36
7.2 Level Switch ..............................................36
7.3 Tone Dialing ............................................37
7.4 V.43/V.FAST Connections ......................37
7.5 Speakerphones..........................................37
7.6 Princess and Trimline Telephones..........38
7.7 Hanging Up the Modem..........................38
7.8 “No Dial Tone” Error Message ................39
7.9 Autodialing................................................40
CONTENTS

8
MOBILE LINC-UP
Data Rate — Up to 33.6 Kbps
Connectors — (1) RJ-22F, (1) RJ-11F, (1) RJ-22M
Operation — Full duplex
Operating
Environment — For indoor use only
Power — External power adapter;
Input: 110 VAC, 60 Hz, 9W;
Output: 12 VDC, 200 mA
Size — 1.1"H x 2.9"W x 3.8"D
(2.8 x 7.4 x 9.7 cm)
Weight — 7.2 oz. with batteries (204.1 g)
1. Specifications

9
CHAPTER 2: Introduction
2.1 Description
The Mobile Linc-Up lets you connect your modem,
fax/modem, or fax machine to virtually any digital,
PBX, multiline, or hotel telephone in seconds.
Simply remove the coiled handset cord from the
telephone base, connect the Mobile Linc-Up to your
telephone, then connect the handset (with coiled
cord attached) and your communications device to
the Mobile Linc-Up.
The Mobile Linc-Up is fully compatible with V.34
modems and can support connection rates up to
33,600 bps.
2.2 Features
•Provides an RJ-11 connection at the handset
jack of the telephone.
•Converts the 4-wire handset jack to a 2-wire
RJ-11 jack.
•Transforms the handset impedance to
telephone line impedance, and vice versa.
•Operates at data rates up to 33.6 Kbps.
2. Introduction

10
MOBILE LINC-UP
•Uses the Level switch to match the modem
signal to the telephone being used. This four-
position switch handles most telephones.
•Works with virtually all telephones that have a
modular handset. The handset must be out of
the cradle.
2.3 Package Contents
Make sure you have all of the following items, and
that none of the items is damaged. If any items are
missing or damaged, contact your supplier
immediately.
• (1) Mobile Linc-Up with batteries (2 each)
installed
• (1) User’s manual
• (1) AC adapter
2.4 Preinstallation Guidelines
Before installing the Mobile Linc-Up, read these
guidelines.
CONNECTION
Never connect the Mobile Linc-Up directly to an analog
or digital telephone line (wall outlet).

11
CHAPTER 2: Introduction
DIALING
Configure your modem, fax/modem, or fax machine
for Tone dialing.
SPEAKER PHONES
If the attached telephone has speakerphone
capability, disable speakerphone operation. This
mode deactivates the handset jack used to send
and receive data.
LEVEL SWITCH
Set the Level switch for the telephone you are using
(see Chapter 4).
SPEAKER CONTROL AND VOLUME
The telephone handset is deactivated during dialing.
If you use a modem or fax/modem, you can use the
AT command (ATM1 for speaker off when carrier
present) to enable the modem speaker and the AT
command (ATL3 for high volume) to set its volume.
You can then “listen in” on dialed calls to monitor
their status. Refer to your modem manual for
information.

12
MOBILE LINC-UP
3.1 Connecting the Mobile Linc-Up to a Phone
1. Remove the spiral handset cord from the
handset jack on the telephone base unit and
insert it into the Mobile Linc-Up jack labeled
HAND SET. (See Figure 3-1.)
2. Insert the Mobile Linc-Up modular telephone
cord (which is permanently attached at one end
to the Mobile Linc-Up) into the handset jack on
the telephone base unit.
3. Connect a modular telephone cord from your
modem, fax/modem, or fax machine jack
labeled “Telco,” “Line,” or “Wall” to the Mobile
Linc-Up jack labeled DATA.
4. For AC adapter operation, connect the round
end of the supplied AC adapter to the DC
connector next to the DATA jack and the
other end to an AC outlet.
NOTE
The Mobile Linc-Up will operate from either the supplied AC
adapter or two 9v DC batteries.
5. Set the Level switch on the bottom of the Mobile
Linc-Up to 3. For more information on the
switch, refer to Chapter 4.
3. Installation

13
6. Lift the telephone handset and listen for a dial
tone. If you do not hear the dial tone, check
your connections to make sure they match
those shown in Figure 3-1.
7. Return the handset to the cradle.
Figure 3-1. Installing the Mobile Linc-Up.
The Mobile Linc-Up is now connected to your
telephone and ready to use.
HANDSET
JACK
FAX/MODEM
“LINE” JACK
Digital, PBX or
Multiline Phone
Notebook, Powerbook or PC
Diagram not to scale.
PHONE JACK
AT THE WALL
PATENT # 4,907,267
MADE IN SAN DIEGO, CA, U.S.A.
AC POWER
AT THE WALL
12V AC Adapter
CHAPTER 3: Installation
Mobile Linc-Up

14
MOBILE LINC-UP
3.2 Battery Replacement
The Mobile Linc-Up comes with two 9v DC batteries
installed. These batteries are heavy-duty and will
yield over 15 hours of modem or fax use. With
alkaline batteries installed, the Mobile Linc-Up will
provide approximately 40 hours of modem or fax
use. The access door for the battery compartment
is located on the bottom of the Mobile Linc-Up.
3.2.1 B ATTERY R EMOVAL
1. Using your thumb, press down on the battery
compartment door thumb grip and push in
the direction of the arrow. See the illustration
below.
2. Set the battery compartment door aside.
LEVEL
4 3 2 1
Thumb Grip
Battery
Compartment
Door

15
CHAPTER 3: Installation
3. Insert your index finger between the two
batteries (toward the end of the battery) and
lift the end of the battery up and out of the
compartment. Then remove the other battery
the same way.
3.2.2 B ATTERY I NSTALLATION
The Mobile Linc-Up connectors have two different
snaps associated with each battery. One is a male
snap (plug), and the other is a female snap
(receptacle).
1. Grip the battery near the end opposite the
battery’s connectors.
2. Align the battery’s male snap with the Mobile
Linc-Up’s female snap and the battery’s female
snap with the Mobile Linc-Up’s male snap,
holding the battery at approximately a 45°
angle. See the illustration on the next page.

16
MOBILE LINC-UP
3. Push the battery toward the Mobile Linc-Up’s
snaps and down at the same time. The battery
will snap in place.
4. Insert the other battery, repeating steps 1
through 3.
5. Install and close the battery compartment door,
setting the door on the housing and sliding the
door toward the Mobile Linc-Up’s Level switch.
NOTE
After aligning snaps
push in and down

17
CHAPTER 3: Installation
The battery’s back end will rub on the Mobile Linc-Up’s
housing while being inserted.
If the battery does not seem to want to be seated in the
battery compartment, make sure that the battery’s male
snap is aligned with the Mobile Linc-Up’s female snap and
vice versa.

18
MOBILE LINC-UP
The Level switch is located on the bottom of your
Mobile Linc-Up (see Figure 4-1). This switch lets you
set the signal level from your modem or fax to the
telephone.
Figure 4-1. The Level Switch.
The Level switch can be set in any of four settings.
The setting you use depends on the signal level used
by the telephone to which your Mobile Linc-Up is
connected.
LEVEL
4 3 2 1
Level switch
4. Level Switch

19
Setting 2 is the highest level. Use this setting if you
connect your Mobile Linc-Up to a telephone that has
a carbon microphone. Older residential telephones
and some hotel telephones use carbon microphones.
Setting 4 is the lowest level. Setting 3 is the most
common position; it is used for electronic
telephones.
If you set the Level switch too high, you will hear
feedback such as a buzz or loud squeal through the
modem speaker when your modem is off-hook. If
you hear feedback, set the Level switch to the next
lower setting—using the sequence 2, 3, 1, 4—until
the feedback disappears.
For example, if the Level switch is set to 2 and you
hear feedback, set it to 3. If you still hear feedback,
set it to 1. If feedback continues, set it to 4.
Table 4-1 shows the Level switch settings to use for
various telephone models. If the telephone you want
to use does not appear in Table 4-1, set the level as
described in the previous section. If feedback occurs
for all four levels, contact your supplier.
A “Yes” in the Autodial column indicates that
autodialing is supported with that telephone model.
CHAPTER 4: Level Switch

20
MOBILE LINC-UP
If your telephone does not allow autodialing, you can
still communicate by dialing with the keypad on your
telephone. Refer to Chapter 5 for information on
manual dialing.
The number in the “See Note” column refers to
a note at the end of the table.
Table 4-1. Level Switch Settings
Switch
Manufacturer Model Setting Autodial See Note
Ameritech None Specified 1 Yes 1
AT&T®Definity 3 or 4 Yes
Definity G3I 3 No
Destiny 3 —2
Dimension 2 or 3 —2
G2 4 Yes
Horizon®2 Yes
ISDN 3 No 1
Infinity 3 Yes
Legend 3 No 8
Merlin®3 Yes
Merlin II 3 —2
Partner 3 Yes
Spirit 3 Yes 1
System 25 3 Yes 3 & 4
System 75 3 Yes 3 & 4
System 85 3 Yes 3 & 4