Modem Status Packet
| Modem Status Packet | ||||
|---|---|---|---|---|
| Packet ID | 66 | |||
| Length | 26 | |||
| Read / Write | Read / Write | |||
| Field # | Bytes Offset | Data Type | Size | Description |
|
1 |
0 |
u32 |
4 |
|
|
2 |
4 |
u32 |
4 |
|
|
3 |
8 |
u16 |
2 |
Data chunk ID |
|
4 |
10 |
u16 |
2 |
|
|
5 |
12 |
u16 |
2 |
|
|
6 |
14 |
u16 |
2 |
|
|
7 |
16 |
u16 |
2 |
Number of acoustic transmissions |
|
8 |
18 |
u16 |
2 |
Number of acoustic packets lost |
|
9 |
20 |
u16 |
2 |
Number of bit errors detected |
|
10 |
22 |
u16 |
2 |
Number of bit errors corrected |
|
11 |
24 |
u16 |
2 |
Latency (milliseconds) |
Modem Status Packet
Note: All statistics returned are for the current data chunk
Modem Data Description
| Bit | Description |
|---|---|
|
0 |
Error detection enabled |
|
1 |
Error correction enabled |
|
2 |
Data discarded |
|
3 |
Data timed out |
|
4 |
Data was corrupt |
|
5 |
Data was corrected |
|
6 |
Reserved |
|
7 |
Reserved |
|
8 |
Reserved |
|
9 |
Reserved |
|
10 |
Reserved |
|
11 |
Reserved |
|
12 |
Reserved |
|
13 |
Reserved |
|
14 |
Reserved |
|
15 |
Reserved |
Modem Data Description
Modem Link Status
| Bit | Description |
|---|---|
|
0 |
No medium available to transmit |
|
1 |
Network link utilise |
|
2 |
30kHz acoustic band utilised |
|
3 |
Reserved |
|
4 |
Reserved |
|
5 |
Reserved |
|
6 |
Reserved |
|
7 |
Reserved |
|
8 |
Reserved |
|
9 |
Reserved |
|
10 |
Reserved |
|
11 |
Reserved |
|
12 |
Reserved |
|
13 |
Reserved |
|
14 |
Reserved |
|
15 |
Reserved |
Modem Link Status
Modem Event
|
Bit |
Description |
|---|---|
|
0 |
See Modem Event Type |
|
1 |
|
|
2 |
|
|
3 |
|
|
4 |
|
|
5 |
Reserved |
|
6 |
Reserved |
|
7 |
Reserved |
|
8 |
Reserved |
|
9 |
Reserved |
|
10 |
Reserved |
|
11 |
Reserved |
|
12 |
Reserved |
|
13 |
Reserved |
|
14 |
Reserved |
|
15 |
Reserved |
Modem Event
Modem Event Type
| Value | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 | Description |
|---|---|---|---|---|---|---|
|
0 |
0 |
0 |
0 |
0 |
0 |
Data chunk created from complete ANPP message |
|
1 |
0 |
0 |
0 |
0 |
1 |
Data chunk created from timeout requirements |
|
2 |
0 |
0 |
0 |
1 |
0 |
Data chunk created from size requirements |
|
3 |
0 |
0 |
0 |
1 |
1 |
Data chunk discarded due to buffer overflow |
|
4 |
0 |
0 |
1 |
0 |
0 |
Data chunk discarded due to buffer timeout |
|
5 |
0 |
0 |
1 |
0 |
1 |
Data chunk discarded due to preemptive buffer timeout |
|
6 |
0 |
0 |
1 |
1 |
0 |
Data chunk discarded due to buffer contention |
|
7 |
0 |
0 |
1 |
1 |
1 |
Data chunk discarded due to out of sequence ANPP packet |
|
8 |
0 |
1 |
0 |
0 |
0 |
Data chunk discarded due to sender |
|
9 |
0 |
1 |
0 |
0 |
1 |
Data chunk pending discard due to buffer timeout |
|
10 |
0 |
1 |
0 |
1 |
0 |
Sent message |
|
11 |
0 |
1 |
0 |
1 |
1 |
Message partially acknowledged |
|
12 |
0 |
1 |
1 |
0 |
0 |
Message acknowledged |
|
13 |
0 |
1 |
1 |
0 |
1 |
Received message |
|
+ |
|
|
|
|
|
Reserved |
Modem Event Type