Oigo Protocol (0x7e AR 0x00 / MG)
Oigo on UDP 5121: 0x7e AR type 0x00 plots mask lat/lon; MG packed coords; ACK 0xE0 only when MG flag bit 7 is set.
On Traxelio
What Oigo trackers do once they are on Traxelio
Point this protocol at Traxelio
Point Oigo at Traxelio
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1
Capture an Oigo fingerprint
Confirm a UDP datagram that opens 0x7e with type 0x00, or an MG body with an 8-byte IMEI and packed lat/lon.
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2
Point Oigo at 5121
Configure only Oigo to UDP 5121. Oigo on 5121 is not Nyitech on 5182 or GT02 on 5022.
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3
Do not wait for an AR ACK
AR has no reply byte. MG answers 0xE0 plus index plus 0x00 only when flag bit 7 is set.
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4
Prove one Oigo fix
Send one AR type 0x00 whose status high nibble is non-zero, or one MG coordinate pair, and verify a map point.
Still offline after GPS lock
Oigo still not landing
- Oigo aimed at the wrong destination
Oigo on 5121 is not Nyitech on 5182 or GT02 on 5022. This row is UDP, not a TCP stream.
- Session up, empty map
AR type must be 0x00 and the status high nibble must be non-zero. Type 0x10 will not plot.
- No ACK, assumed dead
AR has no reply byte. MG answers 0xE0 only when flag bit 7 is set. Check the map, not the socket for an ACK.
FAQ
Oigo leftover questions
Does Oigo send Concox 0x7878 frames?
No. AR opens 0x7e with type 0x00. MG has no 0x7e and carries an 8-byte IMEI plus packed lat/lon.
Which Oigo type plots a map point?
Type 0x00 AR location. Type 0x10 remote start will not plot.
When does Oigo send an ACK?
Only the MG dialect, when flag bit 7 is set. Traxelio answers 0xE0, the index byte, then 0x00. AR has no reply.
How is an Oigo AR IMEI packed?
Eight hex bytes; Traxelio drops the first nibble. Tag low-three 1 is a 14-character MEID instead.
Can an Oigo unit run SMS setup or a controlled-action flow?
This dialect is positions only. There is no SMS family on this row.