©2000 Motorola, Inc.
TDMA T2290/T2297
Cellular Overview
10
Placing a Call (Mobile to Land or Mobile to
Mobile)
When the cellular telephone user originates
the call, the cellular telephone re-scans
the access channels to assure that it is still
tuned to the strongest one. The cellular tele-
Cellular Telephone
Landline Network
Switch / Cell Site
DATA
DATA
(D)SAT
(D)SAT
The cellular telephone user
hears the landline ringing.
Conversation in progress
The landline person being
called answers.
Conversation in progress
The cell site receives the
correct SAT or DSAT, then
unmutes the voice path.
FOCC
&
RECC
RECC
The cellular telephone is
tuned to the access / paging
channel, and responds to
requests for data.
The cellular telephone user
dials a telephone number
and presses SND. The tele-
phone rescans the access
channels for the strongest
signal. The telephone
sends out data, including
the dialed digits, MIN, ESN,
and NAMPS or digital
capability to the cell site.
Overhead data is sent out
on the control channels.
FOVC
REVC
The cell site receives the
mobile-to-land call request.
The cell site sends the data to
the switch. The switch
verifies the MIN & ESN and
then sends out the call to the
landline network.
The cellular telephone
receives the voice channel
assignment, drops the
access channel, tunes to the
voice channel, and
transponds the assigned
SAT or DSAT.
DATA
FOCC
The local telephone
company processes the
telephone call.
VOICE + (D)SAT
FOVC & REVC
The switch assigns a voice
channel and SAT or DSAT.
The voice channel assign-
ment is sent to the cellular
telephone on the access
channel. The cell site sends
SAT or DSAT to the cellular
telephone on the assigned
voice channel.
phone then transmits data at the rate of 10
kilobits per second on the control channel to
notify the switch of its mobile identification
number (MIN) and the number it wants to
reach. The switch verifies the incoming data
and assigns a voice channel and a SAT (or
DSAT for NAMPS channels) to the telephone.
Figure 7. Cellular Telephone to Land Call Processing
Analog Cellular
Summary of Contents for T2290
Page 1: ...DIGITAL WIRELESS TELEPHONE Service Manual Level 3 Release 1 TDMA T2290 T2297 ...
Page 26: ... 2000 Motorola Inc TDMA T2290 T2297 Cellular Overview 16 ...
Page 40: ...Motorola Confidential Proprietary TDMA T2290 T2297 TDMA Test Mode NAM Programming 30 ...
Page 68: ...Disassembly TDMA T2290 T2297 Keypad Removal Motorola Confidential Proprietary 58 ...