Voila un compte-rendu des requêtes effectuées chez moi l'après-midi. (50 s d'attente avant d'obtenir un niveau correct)
J'ajoute que mon modem transporté dans une zone bien couverte m'attribuait très rapidement un bon niveau de signal.
Donc quand même bien suivre le conseil de Standby
AT
OK
+CPIN: READY
AT+CSQ
+CSQ: 0,0
OK
0s
AT+CSQ
+CSQ: 0,0
OK
1s
Call Ready
AT+CSQ
+CSQ: 0,0
OK
2s
SMS Ready
AT+CSQ
+CSQ: 9,0
OK
3s
AT+CSQ
+CSQ: 9,0
OK
4s
AT+CSQ
+CSQ: 8,7
OK
5s
AT+CSQ
+CSQ: 8,7
OK
7s
AT+CSQ
+CSQ: 8,7
OK
8s
AT+CSQ
+CSQ: 8,7
OK
9s
AT+CSQ
+CSQ: 8,7
OK
10s
AT+CSQ
+CSQ: 8,7
OK
11s
AT+CSQ
+CSQ: 8,7
OK
12s
AT+CSQ
+CSQ: 8,7
OK
13s
AT+CSQ
+CSQ: 8,7
OK
15s
AT+CSQ
+CSQ: 8,7
OK
16s
AT+CSQ
+CSQ: 8,7
OK
17s
AT+CSQ
+CSQ: 8,7
OK
18s
AT+CSQ
+CSQ: 8,7
OK
19s
AT+CSQ
+CSQ: 8,7
OK
20s
AT+CSQ
+CSQ: 8,7
OK
21s
AT+CSQ
+CSQ: 8,7
OK
23s
AT+CSQ
+CSQ: 8,7
OK
24s
AT+CSQ
+CSQ: 8,7
OK
25s
AT+CSQ
+CSQ: 8,7
OK
26s
AT+CSQ
+CSQ: 8,7
OK
27s
AT+CSQ
+CSQ: 8,7
OK
28s
AT+CSQ
+CSQ: 8,7
OK
29s
AT+CSQ
+CSQ: 8,7
OK
31s
AT+CSQ
+CSQ: 8,7
OK
32s
AT+CSQ
+CSQ: 8,7
OK
33s
AT+CSQ
+CSQ: 8,7
OK
34s
AT+CSQ
+CSQ: 8,7
OK
35s
AT+CSQ
+CSQ: 7,0
OK
36s
AT+CSQ
+CSQ: 7,0
OK
37s
AT+CSQ
+CSQ: 7,0
OK
39s
AT+CSQ
+CSQ: 7,0
OK
40s
AT+CSQ
+CSQ: 7,0
OK
41s
AT+CSQ
+CSQ: 7,0
OK
42s
AT+CSQ
+CSQ: 7,0
OK
43s
AT+CSQ
+CSQ: 7,0
OK
44s
AT+CSQ
+CSQ: 7,0
OK
45s
AT+CSQ
+CSQ: 7,0
OK
47s
AT+CSQ
+CSQ: 7,0
OK
48s
AT+CSQ
+CSQ: 27,0
OK
49s
AT+CSQ
+CSQ: 27,0
OK
50s
AT+CSQ
+CSQ: 27,0
OK
51s
AT+CSQ
+CSQ: 27,0
OK
52s
AT+CSQ
+CSQ: 27,0
OK
53s
AT+CSQ
+CSQ: 27,0
OK
55s
AT+CSQ
+CSQ: 27,0
OK
56s
AT+CSQ
+CSQ: 27,0
OK
57s
AT+CSQ
+CSQ: 27,0
OK
58s
AT+CSQ
+CSQ: 27,0
OK
59s
AT+CSQ
+CSQ: 27,0
OK
60s
AT+CSQ
+CSQ: 27,0
OK
61s
AT+CSQ
+CSQ: 27,0
OK
63s
AT+CSQ
+CSQ: 27,0
OK
64s
AT+CSQ
+CSQ: 27,0
OK
65s
AT+CSQ
+CSQ: 27,0
OK
66s
AT+CSQ
+CSQ: 27,0
OK
67s
AT+CSQ
+CSQ: 27,0
OK
68s
AT+CSQ
+CSQ: 27,0
OK
69s
AT+CSQ
+CSQ: 27,0
OK
71s
AT+CSQ
+CSQ: 27,0
OK
72s
AT+CSQ
+CSQ: 27,0
OK
73s
AT+CSQ
+CSQ: 27,0
OK
74s
AT+CSQ
+CSQ: 27,0
OK
75s
AT+CSQ
+CSQ: 27,0
OK
76s
AT+CSQ
+CSQ: 27,0
OK
77s
AT+CSQ
+CSQ: 27,0
OK
Serge .D