Modem Data Packet
| Modem Data Packet | ||||
|---|---|---|---|---|
| Packet ID | 68 | |||
| Length | Variable, up to 255 bytes | |||
| Read / Write | Read / Write | |||
| Field # | Bytes Offset | Data Type | Size | Description |
|
1 |
0 |
u32 |
4 |
|
|
2 |
4 |
u32 |
4 |
|
|
3 |
8 |
u32 |
4 |
Serial number part 1 |
|
4 |
12 |
u32 |
4 |
Serial number part 2 |
|
5 |
16 |
u32 |
4 |
Serial number part 3 |
|
6 |
20 |
u16 |
2 |
Number of packets in sequence |
|
7 |
22 |
u16 |
2 |
Packet sequence number |
|
8 |
24 |
u16 |
2 |
Modem data description, see Modem Status Packet |
|
9 |
26 |
u8 |
1 |
Data size |
|
10 |
27 |
|
|
User data |
Modem Data Packet
Modem Data Packet Information
These fields are identical to the fields in the Modem Status Packet (see Modem Status Packet). A sequence of Modem Data Packets are always preceded by a Modem Status Packet. When sending a sequence of Modem Data Packets to Subsonus, it is not required to precede the packet(s) with a Mode Status Packet.
Modem Data Serial Number
When Subsonus returns a Modem Data Packet then this serial number will be the serial number of the unit which sent the data. When sending a Modem Data Packet to Subsonus, set these fields to 0.