IVT401 Protocol ((TLA/TLB/TLN/TLL IMEI CSV)
IVT401 on TCP 5153: (TLA/TLB/TLN/TLL, IMEI, ddmmyy, hhmmss, signed lat/lon; status>0 plots; no ACK.
On Traxelio
What IVT401 trackers do once they are on Traxelio
Hardware that speaks this protocol
Devices that speak IVT401
Point this protocol at Traxelio
Point IVT401 at Traxelio
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1
Capture an IVT401 fingerprint
Confirm (TLA, (TLB, (TLN, or (TLL, then IMEI, ddmmyy, hhmmss, and signed lat/lon, closed by ;. Reject lon-first bare CSV as Intellitrac.
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2
Point IVT401 at 5153
Configure only IVT401 to TCP 5153. IVT401 on 5153 is not Intellitrac on 5037 or Jido on 5237.
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3
Do not wait for an ACK
IVT401 has no reply byte. A parsed status greater than 0 is enough.
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4
Prove one IVT401 fix
Send one (TL line with signed lat/lon and GPS status greater than 0 on 5153 and verify a map point.
Still offline after GPS lock
IVT401 still not landing
- IVT401 aimed at the wrong port
IVT401 on 5153 is not Intellitrac lon-then-lat CSV on 5037 or Jido *imei on 5237.
- Session up, empty map
GPS status must be greater than 0. Status 0 binds the IMEI and will not plot.
- No ACK, assumed dead
This dialect has no reply byte. Check the map, not the socket for an ACK.
FAQ
IVT401 leftover questions
Does IVT401 send Concox 0x7878 frames?
No. IVT401 is parenthesis CSV that opens (TLA, (TLB, (TLN, or (TLL, then the IMEI. Concox families use 0x7878 binary login.
Which GPS status plots an IVT401 fix?
A digit greater than 0 plots. 0 binds the IMEI and will not plot.
Does IVT401 send an ACK?
No. There is no reply byte. A parsed (TL line is the whole handshake.
What does an M prefix on the IVT401 temperature field mean?
Several sensor readings packed after M, split on + or - signs. A field without M is a single decimal.
Can an IVT401 unit run SMS setup or a controlled-action flow?
This dialect is positions only. AUTOCOP, Intellinet IVT 401, TL500, TL1000, and TL3000 are listed.