Eltrade
Eltrade is a Bulgarian manufacturer in the ISL (Information Systems Limited) family. e-bon supports the A1, A3, and K1 series under a single registry entry. Eltrade hardware shows up most often in mid-size HoReCa deployments where the merchant wanted an ISL-compatible alternative to Datecs without leaving the family.
At a glance
| Protocol id | Family | Default TCP port | Default baud | Transports | Probe order |
|---|---|---|---|---|---|
eltrade.isl | isl | 9100 | 115200 | TCP, Bluetooth, Serial | 8 |
Supported transports
Eltrade accepts the standard ISL transport set: TCP/IP over wired Ethernet, Bluetooth, and Serial (RS-232). USB-attached units are reached through a USB-to-Serial bridge (CDC-ACM or FTDI) and addressed as Serial. Wi-Fi for the AMEF link is not supported; see the Wi-Fi note in Supported devices.
Connection defaults
Eltrade defaults to TCP port 9100 and 115200 baud, identical to Datecs and the rest of the ISL family. Override only when the device has been re-configured locally or is reachable through a port-mapped NAT.
Known quirks / firmware tips
No protocol-specific quirks are documented for Eltrade at this time. Standard ISL troubleshooting applies — link layer first, protocol layer second. See Troubleshooting for the full checklist.
Pairing flow
Eltrade pairing follows the standard Android flow: pick the transport, accept the suggested protocol when auto-detect lands on eltrade.isl, and confirm a test print. The full walkthrough is in Pairing your fiscal printer.
Next steps
- Supported devices — full compatibility matrix and family overview.
- Pairing your fiscal printer — operational pairing flow on Android.
- Troubleshooting — when a paired device goes offline or refuses to print.