{"answer":"Use controlled substitution. Test the SIM in another approved device, or a known-working SIM in the router. Move the router to a known-good antenna or connect a short test antenna, and compare signal-quality readings. Verify APN and configuration against a working template.\n\nCheck system uptime and power logs to identify resets. If several devices on the same carrier fail together, investigate the network; if only one site has poor RSRQ or SINR, inspect the radio path. Reproduce the fault on the bench where possible. Change one variable at a time and keep evidence, otherwise several simultaneous changes can hide the real cause.","approval_status":"draft_for_dave_review_pending_public_brain_audit","approved":false,"category":"Firmware Diagnostics and Troubleshooting","category_slug":"firmware-diagnostics-and-troubleshooting","created_at":"2026-07-09T09:10:00+00:00","daily_publish_cap":2,"date_published":"2026-07-09","display_date":"2026-07-09","drip_status":"review_seed","freshness_note":"Confirm current model specifications, carrier compatibility, stock, pricing, firmware, warranty and commercial terms directly with Comset where they affect a decision.","id":"comset-qa-087","image_ids":["comset-product-range-antennas","comset-product-ant-lte-006a","comset-category-hero-029-firmware-diagnostics-and-troubleshooting"],"language":"en-AU","last_updated":"2026-07-09T09:10:00+00:00","matched_image_ids":["comset-product-range-antennas","comset-product-ant-lte-006a","comset-category-hero-029-firmware-diagnostics-and-troubleshooting"],"public_brain_verified":false,"publish_status":"review_preview","published_at":"2026-07-09T09:10:00+00:00","question":"How can a technician separate a carrier problem, antenna problem, configuration problem and router fault?","question_intent":"public_guidance","question_type":"deployment_or_troubleshooting","real_image_mapping_status":"mapped_to_approved_comset_catalogue_v1_6","site_key":"comset","slug":"how-can-a-technician-separate-a-carrier-problem-antenna-problem-configuration-problem-and-router-fault","source":"Comset public website scrape and stable industrial-networking explanation","source_record_ids":["comset-source-0370","comset-source-0367","comset-source-0368","comset-source-0369"],"source_type":"client_source_plus_stable_explanatory_context","source_urls":["https://comset.com.au/faq","https://comset.com.au/videos","https://comset.com.au/product/network-management-system"],"tenant_slug":"comset","updated_at":"2026-07-09T09:10:00+00:00"}