Here's a summary of the findings.
Problem: Intermittent fibre connectivity problems in the Movistar service. Wi-Fi and LAN service connects to the modem, but not to the internet. (Askey modem/router RTF8225VW)
Team:
Model No.: RTF8225VW
Firmware: ES_g2.5_RTF_TEF004_V3.13
Serial number: A08A06658840
MAC: A0:8A:06:65:88:40
Findings:
Optical reception power: -20,000 dBm. Within GPON specifications (approximately -8 to -28 dBm), but on the low end.
Optical transmit power (OLT side): "Not available" — not available for this router.
System logging enabled with warning level, ip1 interface (WAN), running continuously for approximately 42 hours without reboots. Log review results: No signal loss (LOS) or frame loss (LOF) events were recorded. A WAN/PPP negotiation cycle occurred during the initial boot, which completed successfully (connection status 0→1→2→3, IPv4 address obtained). There have been no WAN session drops or PON re-enrollments since then.
Conclusion: No optical alarms or link drops were recorded at the PON layer during the recording period. This points to the router itself (rather than the fiber line) as the most likely source of instability, although no event has yet been recorded during an actual service outage.
If uninterrupted service is restored, we will greatly appreciate it and will be happy to continue our services. I understand that our poor knowledge of Spanish can be an inconvenience, but at the insistence, Movistar put our technical support staff at our disposal.
Perhaps what has already been done has solved the problem? Let's hope so. We haven't had any unexpected disruptions recently. With any luck, the service will remain stable.
Thank you!