AC75 AT Command Set

8.9 AT^MONI

s

If the radio cell changes during a connection, the parameters PWR, RXLev and C1 of the 'Serving Cell' part cannot be updated under certain conditions and therefore, are displayed as "-" (for conditions see also AT+CREG). This is because the MS does not update the cell selection and reselection parameters since, in this mode, they are not relevant for operation. When the connection ends, and the mobile is back to IDLE mode, correct values will be given.

If the radio cell changes during a connection, it normally takes 1 or 2 seconds to update the parameters cell, NCC and BCC. Until the information is received from the new base station, the default values will be shown instead: cell="0000", NCC="-", BCC="-".

If the BS supports frequency hopping during a connection, the dedicated channel (parameter chann) is not stable. This mode is indicated by chann = 'h'.

To some extent, the cell monitoring command AT^SMONC covers the same parameters. The receiving level, for example, can be queried with both commands. Yet the resulting values may be slightly different, even though obtained over a time period of a few seconds. This is quite normal and nothing to worry about, as the cell information is permanently updated.

For compatibility with earlier products and to support legacy applications, any input character may be used to stop the output in certain cases (depending on the settings of AT+IPR and AT+CMUX).

8.9.1AT^MONI responses

ME is not connected:

a) ME is camping on a cell and registered to the network:

 

Serving Cell

 

 

 

 

 

 

 

 

 

I Dedicated channel

 

 

 

chann

rs

dBm

MCC MNC

LAC cell NCC BCC PWR RXLev

C1

I chann TS timAdv PWR

dBm Q ChMod

1013

21

-71

001

01

1001 0103

7

7

33

-105

33

I

No connection

 

 

b) ME is camping on a cell but not registered to the network (only emergency call allowed):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Serving Cell

 

 

 

 

 

 

 

 

 

I Dedicated channel

 

 

 

chann

rs

dBm

MCC MNC

LAC cell NCC BCC PWR RXLev

C1

I chann TS timAdv PWR

dBm Q ChMod

1013

21

-71

001

01

1001 0103

7

7

33

-105

33

I

Limited Service

 

 

c) ME camping on a cell, but searching for a better cell (cell reselection):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Serving Cell

 

 

 

 

 

 

 

 

 

I Dedicated channel

 

 

 

chann

rs

dBm

MCC MNC

LAC cell NCC BCC PWR RXLev

C1

I chann TS timAdv PWR

dBm Q ChMod

1013

21

-71

001

01

1001 0103

7

7

33

-105

33

I

Cell Reselection

 

 

d) ME is searching and could not (yet) find a suitable cell:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Serving Cell

 

 

 

 

 

 

 

 

 

I Dedicated channel

 

 

 

chann rs

dBm

MCC MNC

LAC cell NCC BCC PWR RXLev

C1

I chann TS timAdv PWR

dBm Q ChMod

 

Searching

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ME is connected (Call in progress):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Serving Cell

 

 

 

 

 

 

 

 

 

I Dedicated channel

 

 

 

chann

rs

dBm

MCC MNC

LAC cell NCC BCC PWR RXLev

C1

I chann TS timAdv PWR

dBm Q ChMod

1013

19

-76

001

01

1001 0103

7

7

33

-105

33

I 1015 1

0 5

-76 0 S_HR

Columns for Serving Cell:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Column

 

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

chann

 

 

 

 

 

ARFCN (Absolute Frequency Channel Number) of the BCCH carrier

 

rs

 

 

 

 

 

RSSI value 0 - 63 (RSSI = Received signal strength indication)

 

 

 

dBm

 

 

 

 

 

Receiving level of the BCCH carrier in dBm

 

 

 

 

 

MCC

 

 

 

 

 

Mobile Country Code (first part of the PLMN code)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AC75_ATC_V01.002

 

 

 

 

Page 211 of 569

 

 

 

 

10/30/06

Confidential / Released

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 211
Image 211
Siemens AC75 manual Atmoni responses