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1995-01-01
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From: edg@netcom.com (Ed Greenberg)
Subject: Book Review: Motorola Cellular Subscriber Technical Training Manual
Organization: Netcom Online Communications Services (408-241-9760 login: guest)
Date: Thu, 25 Nov 1993 14:40:32 GMT
I promised a review of the Motorola "Blue Book" or "Cellular Subscriber
Technical Training Manual." This book is the companion material for a
two day course required of technicians in an authorized Motorola cellu-
lar service shop.
After a discussion of installations safety, the book opens with a
Cellular Overview in which AMPS and NAMPS are explained in 23 pages.
In block diagrams, flowcharts and text, the processes for going on the
air, making calls, receiving calls and processing handoffs are
presented. Band plans and channel layouts are also described.
Next, Section 2 presents a detailed look at the Motorola line of
cellular phones, both past and present. Model identification is
presented, as is a look at the accessory lines for the telephones.
Section 3 is probably the section in which most readers of this review
have interest. Section 3 presents programming information for
virtually every field programmable Motorola telephone including the
8000 series, 9000 series (Ultra Classic) and all forms of Micro-TAC
Flip-Phones.
Programming via the "security code method" is taught, and also entry
into "Test Mode" and the steps for programming the phone this way.
The implication here is that the holder of a Blue Book, who is
manually dexterous enough, and has sufficient ingenuity, to get the
phone into test mode, can get past the security and lock codes to
program mode, read and change those codes.
Another interesting feature explained in Section 3 is the Test Mode
display. The test mode display, when first started, displays the
cell's control channel number and signal strength (RSSI) are
displayed. This alternates with (or on large displays is displayed
with) a set of seven status bits for the phone's settings. If you are
interested in knowing where the cells are and which cells are used in
what locations, ride around in test mode for a while. Note that Test
Mode will drain a portable's batteries in a few hours since the lamp
and display never go out, and any power saving features of the
Microprocessor are not enabled. Use a power adapter in the car, or
carry extra batteries.
Section 4 discusses installation of mobile telephones in vehicles.
Section 5, Troubleshooting and Repair, is another gold-mine for the
interested end user. While you won't want to open or adjust your
phone, an understanding of the various signalling methods can be
obtained by reading the tuneup procedures. At the end of this section
is a complete list of Test Mode commands, which includes such things
as opening the receiver on any channel, putting the transmitter on the
air manually (a violation of many FCC regulations for the end user,
I'm sure) and completely resetting the phone. Such a reset will clear
the call counters (including the cumulative counter, I believe) and
also the three (or fifteen) time programming counter.
Section 6 descibes procedures for moving ESNs from one phone to
another when loaners and spares are issued. There is a lot here that
is _not_ said, but it seems that special loaner and spare phones are
issued to shops that can receive the ESN of another similar phone.
Note that the original phone is rendered useless until returned to the
factory, so this is NOT a procedure that allows two phones to share
one ESN, which would not be a proper setup according to the cellular
carriers.
Finally, Section 7 concerns requirements for service shops and warrantee
exchange programs.
The book concludes with five appendices and an index. The appendices
are:
Corrective Service Bulletin Index
Tools and Parts
Glossary of Terms
Cellular Frequencies
Warrantee Requirements
The question arises whether a person should order this book. If you
want to understand how cellular systems work, a good technical
bookshop may be a better bet. If you have a burning desire to be able
to active all the modes of your phone even if they are useless, then
you are like me and will want this information. If you want to drive
around tracking cell sites, you'll enjoy test mode, but I strongly
recommend using a mobile telephone rather than a portable for about
five good reasons.
Ordering Info: Call Cellular Subscriber Service at 1-800-331-6456 (US
Only) or fax to 708-523-3402. Asia-Pacific customers may fax to +1
708 523-8060. Order part number 688A60 (Training and Orientation
Manual). The price is $30.00 and there was $5 shipping added for UPS
Ground. Motorola also charged me sales tax, and the total was $37.48.
Enjoy.
PS: Another neat thing to ask for is the Cellular Accessory Catalog,
which is free.
Ed Greenberg edg@netcom.com Ham Radio: KM6CG