Call Origination (Gsm And Dcs Only); Figure 11. Gsm Connection Control; Figure 10. Gsm Signalling Setup - Motorola A920 Service Manual

Level 3 Service Manual

Call Origination (GSM and DCS only)

Use the following procedures for call processing. The
screen shots are from a Rohde and Schwarz CMU 200.
The procedures can be adopted to any other test box
that will be used to perform call processing.
1. Install the test USIM in phone.
2. Connect hardware as illustrated in figure 13.
Note: Control interface doesn't need to be con-
nected at this time.
3. Setup up the test box for GSM or DCS Signal-
ling

Figure 10. GSM Signalling Setup

GSM
Ch. 1
1900 Overview
Ch. 2
Menu Select
Selection
GSM Mobile Station(GSM 1800/Signalling/Overview/P/t Normal GMSK
Basic Functions Non-Signalling
GSM Mobile Station Signalling
GSM 850
GSM 900
GSM 1800
GSM 1900
3G UMTS User Equipment
WCDMA FDD
Menu
Select
4. Set Broadcast Channel (BCH) to 120 (GSM)
or 700 (DCS)
5. Set Broadcast channel level to -85dBm
6. Set Traffic Channel (TCH) to 38 (GSM) or 512
(DCS)
7. Set Traffic channel level to -85dBm
Preliminary
Circuit
Connect
Switched
Control
Single Slot
Hotkeys - Set 1
RF
Analyzer/Generator
Analyzer/Generator
Overview
AUDIO
Analyzer/Generator
GSM 850
Analyzer/Generator
P/t Normal GMSK
GSM 850
Overview
P/t Normal GMSK
GSM 850
Analyzer/Generator
P/t Normal GMSK
GSM 850
Overview
P/t Normal GMSK
HotKeys HotKeys HotKeys HotKeys
Set 1 Set 2 Set 3 Assign.
Motorola Confidential Proprietary
GSM/DCS/PCS Call Processing

Figure 11. GSM Connection Control

GSM Connection Control
900
Frequency
+ 0
Hz
Offset
BCCH and TCH
Mode
BCCH
- 85.0
dBm
Level
RF
37
Channel
Connection MS Signal BS Signal
8. Wait until the phone indicates a receive signal
9. Dial a number from the phone and press the
send button.
10. The phone is now connected.
Figure 12. GSM Call Connected
GSM
Ch. 1
1800 Overview
Ch. 2
RUN
P/t Norm GMSK
1(28.0 )
Reported Power
dBm
25.5
Avg. Burst Power (Current)
dBm
25.7
dBm Peak Burst Power
Ok
Power Ramp
- 0.75
Time Advance Error
Sym.
RUN
Ext. Phase Error GMSK
- 30
Hz Frequency Error
6.2
Peak Phase Error(Current)
2.1
RMS
MS Receiver Reports
17
RX Level
( - 94 to - 93 dBm)
0
RX Quality
( 0.0 to ( 0.2 % )
Off
Discontinuous Transmission(DTX)
Timing
PCL
Advance
Manual Test Procedures
Signal On
Single Slot
- 85.0 - 20.0
dBm dB
used unused
975 925.2
MHz
Off
3
Network AF/RF Sync
Circuit
Switched
Single Slot
Settings
Signalling States
MS Capabililties
Signalling Info
IMSI --- ------
IMEI --- ------ --
Dialled Number 123655
Traffic Mode Full Rate Version 1
Meas. Control
Repetition Continuous
Stop Condition None
Display Mode Current
Statistic Count 100 Bursts
Analyzer Level
RF Mode Auto
RF Attenuation Low Noise
Triiger Source Signalling
Trigger Slope Rising Edge
MS Signal
CIrcuit Switched
Timing Advance 0 Sym.
Single Slot
PCL (MS) 1 (28.0 dBm)
Slot
Mode
TCH
Level
RF
Channel
Hopping
Timeslot
1 2
Connect
Control
R
P/t Norm,
U
GMSK
N
Appli-
cation
Analyzer
Level
MS Signal
BS Signal
Network
Menus
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