Motorola M3097 Service Manual download pdf (Page 23)

©1999 Motorola, Inc.

TDMA M3090/M3097Cellular Overview

12

(D)ST +

(D)SAT

Landline Network

Switch / Cell Site

Cellular Telephone

DATA

DATA

DATA

DATA

DATA

(D)SAT

(D)SAT

(D)SAT

Conversation in progress

VOICE + (D)SAT

Conversation in progress

Voice path unmuted

The landline caller dials the

cellular telephone number.

The Public Service Telephone

Network (central office)

forwards the call to the central

controller (switch).

The landline caller hears

ringing, busy, etc.

Overhead data is sent out

on the control channels.

The switch receives a call from

land. The switch pages the

cellular telephone. The page is

sent as data on the forward

control channel.

The cell site receives the

acknowledgement and sends it

to the switch. The switch

verifies the ESN & MIN and

assigns a voice channel.

The cell site informs the

cellular telephone of the voice

channel and SAT (DSAT).

The cell site sends the SAT

(DSAT) on the voice channel.

The cell site receives the correct

SAT (DSAT) and alerts the

cellular telephone to ring.

The cell site receives signaling

tone (DST message) from the

cellular telephone.

The cell site unmutes the

voice path.

The cellular telephone is

tuned to the

access / paging

channel, and responds

to requests for data.

The cellular Telephone

decodes the data and

successfully reads its MIN.

The telephone scans the

control channels for the

strongest, then acknow-

ledges the page by sending

it’s ESN, MIN, and NAMPS

or digital capability as data

on the control channel.

The telephone receives

the data and tunes to the

assigned voice channel,

then transponds

the SAT (DSAT).

The cellular telephone

rings. While ringing, the

subscriber unit sends a 10

kHz signaling tone (DST

message) to the cell site.

The cellular telephone user

answers by pressing SND

The signaling tone stops.

FOCC

&

RECC

FOCC

RECC

FOCC

FOVC

REVC

FOVC

REVC

REVC

FOVC & REVC

Figure 8. Land to Cellular Telephone Call Processing

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