Step-by-step pairing

Inspect system & SIM port status
Sign in to the Etross ETS administration interface and review Status to verify active SIM registration, signal bars, call status, ASR and ACD across populated ports.
Figure 1 · Etross ETS system & SIM port information
Configure static WAN address
Open Network settings → WAN, select Static mode (fixed IP), configure an IPv4 address on the Cloudfonica client subnet (192.168.101.x / 255.255.255.0, static gateway 192.168.101.1) and select Save.
Figure 2 · Etross Network settings → WAN configuration
Enable peer SIP trunk (192.168.101.1:5060)
Open Trunk, switch Trunk enable to ON, set Call routing profile to sip-gsm and Trunk type to peer, then enter 192.168.101.1 and port 5060 under Peer setting and select Save.
Figure 3 · Etross peer SIP trunk settings
Map call routing & dial profile
Open Call routing → Route config, edit the sip-gsm dial profile to define digit mapping and number translation across active SIM ports, keep G.729 / G.723 prioritised, select Save, and register the gateway’s static IP inside your Cloudfonica service panel.
Figure 4 · Etross Call routing → Route config