All you need to know about Modem configuration for Ethernet with TotaLite
Ports
TotaLite only makes outbound connections — no inbound internet-facing port is required. Your firewall needs to allow the following outbound traffic:
Port | Destination | Purpose |
UDP 67/68 | Local DHCP server | Address acquisition |
UDP 53 | DNS server (via DHCP) | Hostname resolution |
UDP 5684 | lwm2m-connect | Device management |
TCP 443 | Amazon S3 | Uploading measurements |
UDEP 123 | ntp.uio.no, time.google.com | Time sync |
TCP 80 | Firmware host | Firmware download |
UDP 5683 | Firmware host | Firmware download (CoAP) |
If you integrate directly with the sensor's local HTTP API (port 2080), note that some operations — acknowledgements, storage info, image retrieval — can take up to 120 seconds. The API doesn't enforce a response deadline, so set your own client-side timeout with margin above 120 seconds.
Bandwidth
Internet providers measure speed in either MB/s (megabytes) or Mb/s (megabits) — a factor of 8 difference. Confirm which one your provider quotes before sizing your connection.
Minimum required speed depends on your measurement interval (MS, in seconds):
- MB/s: 1.4 / MS
- Mb/s: 11.2 / MS
Example, 5-minute interval (300 seconds):
- 1.4 / 300 = 0.0047 MB/s
- 11.2 / 300 = 0.037 Mb/s
NOTE: The connection must be stable, not just fast. The device reboots on connection failure, so an unstable high-speed connection isn't sufficient. Latency also matters: keep round-trip time under 2 seconds to avoid firmware download retransmissions.