APPENDIX A

How to Obtain a Protocol Log

MONITOR ISDN SIGNALING LINK 1

Signal OK

ISDN Frames

I - Frames

S- Frames

U - Frames

Errored Frames

Waiting for start trigger

Agilent 8922M

To log protocol messages into the Agilent 8922M

Logging

1

Select Log/Pause

Start-up

2

Select Clear Log

 

 

3

Select Log/Pause

Make Call

With the real time display enabled (To see the messages themselves on the

 

HP/Agilent 37900D, Press ’R’ to get a real time display of incoming messages.

 

Theese are short summaries of each message. To return to the MONITOR ISDN

 

SIGNALLING LINK1 screen, select ’1’.), press ’123’ on the Mobile Station handset

 

keypad, and press ’SEND’, just as you would when making a real call on a GSM

 

cellular phone. As the call comes up, there will be assignment appearing on the

 

display of the HP/Agilent 37900D.

Real Time

To see the messages themselves on the HP/Agilent 37900D, press ’R’ to get a real

Message Display

time display of incoming messages. These are short summaries of each message. To

 

return to the MONITOR ISDN SIGNALLING LINK1 screen, select ’1’

Occasionally the bar graph indicators will rise up to 100% and then fall back as the Agilent 8922M empties its cache of messages. This only occurs when a call has been established.

A-9

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Agilent Technologies 8922M, S GSM manual Logging, Start-up, Make Call, Real Time, Message Display