Mobile Communications
LBI-39001
EDACSTM Jessica
PBX Gateway
Operator’s Manual
LBI-39001
TABLE OF CONTENTS
1. SCOPE ................................................................................ 3
2. QUICK USAGE GUIDE..................................................... 4
2.1. Making Phone Calls From An EDACS Radio............. 4
2.2. Calling EDACS Radios From A Phone........................ 5
3. DETAILED USAGE GUIDE.............................................. 7
3.1. Radio Users................................................................... 7
3.2. Phone Users .................................................................. 8
4. GLOSSARY........................................................................ 11
This manual is published by Ericsson GE Mobile Communications
Inc., without any warranty. Improvements and changes to this manual
necessitated by typographical errors, inaccuracies of current
information, or improvements to programs and/or equipment, may be
made by Ericsson GE Mobile Communications Inc., at any time a nd
without notice. Such changes will be incorporated into new editions of
this manual. No part of this manual may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including
photocopying and recording, for any purpose, without the express
written permission of Ericsson GE Mobile Communications Inc.
Copyright© June 1994, Ericsson GE Mobile Communications Inc.
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1. SCOPE
This manual explains how to use the Enhanced Digital Access
Communications System (EDACS) Jessica Telephone Interconnect
System. The Jessica system allows telephones on the Public Switched
Telephone Network (PSTN) to reach radio users. Conversely, the
system allows radio users to make telephone calls. This manual
provides a brief explanation of how to access Jessica services, followed
by a more detailed discussion for advanced users.
Several terms used throughout this manual may be unfamiliar to the
user. These terms are explained in this section and in the Glossary to
help avoid confusion. Private Branch Exchange (PBX) is a telephone
switch commonly used in business applications. For example, dialing
the last four digits of a telephone number to call someone else i n your
office makes use of a PBX to reach that person. Public Switched
Telephone Network (PSTN) is a telephone switch for public use, as
opposed to private use. For example, dialing your home telephone
number from your office uses a PSTN to reach the home number. An
inbound call is a phone-originated call to a radio and an outbound call is
a radio-originated call to a phone. Hang time is a specified time (hang
time default is 30 seconds at the PBX Interface) during which the Pushto-Talk (PTT) button on a radio must be pressed to continue the call. If
the PTT button is not pushed within the hang time limit, then EDACS
disconnects the call. Conversation time limit is the maximum amount
of time (default is 5 minutes at the PBX Interface) allowed for all
interconnect calls. If a call exceeds the conversation limit, then EDACS
drops the call.
NOTE
Access to EDACS Systems features depends on how the EDACS System
Administrator has configured the system. Check with your EDACS
System Administrator for information on proper usage before accessing
the system.
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2. At the second dial tone, the PSTN user
enters the following command
sequence:
"*" + FC + "*" + AC + "#'"
FC is the MD110 feature code
indicating that an authorization code
(AC) follows. This feature code is
market-dependent and is typically a
single digit. For example, a "6" is used
as the FC in the U.S.
AC is the authorization code defined
for the caller. The AC is customer-
defined and may be from 1 to 7 digits,
but cannot begin with "0."
3. Once the phone user has entered the
command sequence, a dial prompt is
generated.
4. Before the radio ID is entered, the
phone user may need to enter the
EDACS LCR code. Similar to the
LCR code for radio-originated PSTN
calls, the EDACS LCR is customer-
defined, but typically is "7." The
PSTN user then enters the EDACS
radio ID.
2. QUICK USAGE GUIDE
This section presents a brief summary on how to place phone calls
through the EDACS Jessica system. For more information about the
access methods, refer to the detailed usage section.
2.1. MAKING PHONE CALLS FROM AN EDACS
RADIO
These "generic" instructions for all EDACS radios assume a typical
Jessica configuration. To determine the exact sequences to access
Jessica features from a specific radio, refer to the operator's manual for
that radio.
The steps for making phone calls from an EDACS radio are
presented below.
ll
Placing a Call
Initiate the call by one of the following actions:
1. Press the "*" key, enter the destination telephone number, an d
then depress the PTT button.
2. Enter the destination telephone number, press the "*" key, and
then depress the PTT button.
3. Press the special call button (typically SCN or SCAN). Select
the telephone number from the list and depress the PTT button.
ll
Answering a Call
Simply press the PTT button and hold while talking. Full duplex
radio users need only press PTT initially.
ll
Sustaining a Call
Press the PTT button whenever you hear the hang time warning
tone to ensure that your call is not disconnected. EDACS has a
"hang time" that will drop a call if the user fails to press the PTT
button within a specified time (default is 30 seconds at the PBX
Interface). Full duplex radio users need only press PTT initially.
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ll
Ending a Call
Press the clear button on your radio. Please consult your operator's
manual for details.
ll
Common Speed Dialing
Consult your System Administrator for the common speed dial
numbers. Follow the steps for "Placing a Call" and use the common
speed dial number.
2.2. CALLING EDACS RADIOS FROM A PHONE
For all types of calls to an EDACS radio, phone users hear normal
phone tones i.e., ringing until the called party answers or the call times
out, or alternatively, a busy tone until hanging up or the call times out.
ll
Placing a Call
When calling a radio that has a direct inward dial (DID) number,
call the PSTN number for that group or individual.
For all other radios, follow one of the sequences below. With some
systems, the phone user may need to enter an EDACS selector
number (not shown here). Valid logical identification (LID)
numbers range from 00001 to 16382, and valid group identification
(GID) numbers range from 0000 to 2047. A leading "3" designates
a digital call and a "2" before a GID number designates a group
call. The term "digital" refers to voice transmission in a digital
format.
First, call the EDACS telephone number.
At the tone, enter the EDACS selector, if necessary.
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Accomplishing Task with Jessica
See your radio operator's manual for
specific usage on interconnect calls.
Number requires a Least-Cost Routing
(LCR) code as the leading digit of the
destination phone number. The LCR is
customer-defined, but typically is "9."
Once the number is passed through Jessica
and into the PSTN, the radio user will hear
ringing.
Once the number is passed through
Jessica, the radio user will hear ringing.
To an EDACS radio user, reception of a
PSTN- or PBX-originated call involves
pressing the PTT button to answer it.
To Call:
• An individual radio, enter the 5-digit radio ID.
• A digital individual radio, press “3” + 5-digit radio ID.
• A group of radios, press “2” + 4-digit group ID.
• A digital group of radios, press “3” + “2” + 4-digit group ID.
Example 1: To call radio 6107
• Dial the EDACS telephone number.
• At the dial tone, enter the EDACS selector (optional).
• Enter “0” + “6” + “1” + “0” + “7” (Remember the LID must be 5
digits, i.e. 06107).
Example 2: To call group 372
• Dial the EDACS telephone number.
• At the dial tone, enter the EDACS selector (optional).
• Enter “2” + “0” + “3” +”7” + “2” (Remember the GID must be 4
digits , i.e. 0372).
Some systems will be set up using feature and authorization codes that
are a variable number of digits. (Contact your System Administrator
for more information.) The authorization code must be entered after
the EDACS selector and before the digits specifying call type and
radio ID.
Example 3: This is the same call to group 372 as described in
Example 2 except that the authorization code “*6*123#” is required
and the EDACS selector is “8”.
• Dial the EDACS telephone number.
• At the dial tone, enter the EDACS selector (“8”).
• Enter the authorization code “*” + “6” + “*” + “1” + “2” + “3” +
“#”.
• Enter “2” + “0” + “3” + “7” + “2”.
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Accomplishing Task with Jessica
See your radio operator's manual for
specific usage on interconnect calls.
Number requires a Least-Cost Routing
(LCR) code as the leading digit of the
destination phone number. The LCR is
customer-defined, but typically is "9."
Once the number is passed through Jessica
and into the PSTN, the radio user will hear
ringing.
Once the number is passed through
Jessica, the radio user will hear ringing.
To an EDACS radio user, reception of a
PSTN- or PBX-originated call involves
pressing the PTT button to answer it.
ll
Ending a call
Simply hang up the phone.
3. DETAILED USAGE GUIDE
The Jessica system contains a small business telephone switch that
allows flexible use of radios and telephones. The sections below present
instructions on how to use a radio or a telephone to complete several
types of tasks with Jessica.
3.1. RADIO USERS
The chart below shows how to use a radio to accomplish several
tasks with Jessica.
Task
Placing a PSTN
destination call
Placing a PBX
destination call
Receiving a call
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Task Accomplishing Task with Jessica
DTMF overdial Consult your radio operator's manual for
specific usage. DTMF is allowed in clear
voice only. Note: Currently, EDACS
radios generate the North American
DTMF tones. Therefore, to use overdial
outside North America, EDACS radios
would be required to generate the
appropriate tone set.
Terminating a call A radio-originated or PSTN- or PBX-
originated call may be terminated for a
radio with a keypad by pressing the SPC
or Clear button. Radios without a keypad
may terminate the call by not keying the
radio within the hang time period.
3.2. PHONE USERS
The following chart shows how to access Jessica features from a
telephone.
Task Accomplishing Task with Jessica
Placing a phoneoriginated call
8
1. The PSTN user must dial into the
MD110 via a customer-defined public
number. Once the MD110 answers, it
generates a second dial tone.
Note: Normally, a user will skip to
step 4, but steps 2 and 3 may be used
to obtain more phone privileges where
allowed.
LBI-39001
2. At the second dial tone, the PSTN user
enters the following command
sequence:
"*" + FC + "*" + AC + "#'"
FC is the MD110 feature code
indicating that an authorization code
(AC) follows. This feature code is
market-dependent and is typically a
single digit. For example, a "6" is used
as the FC in the U.S.
AC is the authorization code defined
for the caller. The AC is customer-
defined and may be from 1 to 7 digits,
but cannot begin with "0."
3. Once the phone user has entered the
command sequence, a dial prompt is
generated.
4. Before the radio ID is entered, the
phone user may need to enter the
EDACS LCR code. Similar to the
LCR code for radio-originated PSTN
calls, the EDACS LCR is customer-
defined, but typically is "7." The
PSTN user then enters the EDACS
radio ID.
Task Accomplishing Task with Jessica
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Task Accomplishing Task with Jessica
The radio ID is always a 5-digit
number. For an individual call, the
PSTN user enters a 5-digit radio LID.
For a group call, the 4-digit GID must
be preceded by a "2," thus forming a 5digit number.
5. If the PSTN user wishes to place a
digital voice call, a "3" precedes the 5digit radio ID.
Receiving a radiooriginated call
Terminating a call A radio-originated or PSTN-originated
The PSTN user receives a radio-originated
call as a normal telephone call.
call is terminated when the PSTN user
hangs up the phone.
A radio user may also terminate the call
by pressing the SPC or Clear key, or by
allowing the hang time to expire.
Depending on the phone system, EDACS
may drop a call after a delay. If PSTN
does not provide line clearing, then the
call is not terminated when the phone
hangs up. The radio user must terminate
the call.
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4. GLOSSARY
AC Authorization Code -- the MD110 authorization code
defined for EDACS interconnect calls. The AC is
customer-defined and may be from 1 to 7 digits, but
cannot begin with "0."
DID Direct Inward Dial -- allows callers from the public
network to place an individual call to a radio by dialing
a single telephone number, instead of one telephone
number to call Jessica and a second series of numbers to
indicate the Logical ID (LID). To accomplish this, the
LID is mapped to a number. I n some cases, the DID
number will be the LID.
DTMF Dual Tone Multi-Frequency -- standard telephone
dialing tones.
FC Feature Code -- the MD110 feature code indicating that
an authorization code (AC) is to be entered. This
feature code is market-dependent and typically is a
single digit. For example, a "6" is used as the FC in the
U.S.
LCR Least-Cost Routing -- a function that allows the system
to automatically select the most economical route for an
outgoing call. The selected route is based on trunk
availability, class of service, time of day, and week.
LCR is available for outbound calls only.
LID Logical Identification -- individual radio or console ID.
MD110 Ericsson PBX that provides connectivity to the PSTN.
PBX Private Branch Exchange -- a telephone switch
commonly used in business applications.
PSTN Public Switched Telephone Network.
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Ericsson GE Mobile Communications Inc.
Mountain View Road • Lynchburg Virginia 24502
Printed in U.S.A.
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