Overview
- The CRT reported that in the second half of 2025 Telmex logged 665,171 failure observations on its internal retail network versus 75 on the wholesale network it supplies to competitors, producing a Z-statistic of -15.96 that falls well outside the regulator’s control limits.
- Telesites showed a similar split for passive infrastructure access with an ICD45 average of 0.78 for internal requests and 0.11 for external ones in H2 2025, an 85 percent gap and a Z-statistic of -17.99, where ICD45 measures the share of requests accepted within the time the reference offer sets.
- The CRT noted that overall link availability stayed near 100 percent for both internal and external groups, which means the high internal failure counts do not translate directly into lower measured uptime and make the operational picture harder to interpret.
- Those comparisons are complicated by stark differences in sample size and processing times because internal observations outnumber external ones by orders of magnitude and external requests took longer to be accepted (for example 3.33 days internal versus 5.75 days external in H1 2025), and AT&T accounted for a large share of external demand on Telesites.
- The reports, based on data the providers submitted, do not constitute enforcement findings but could affect competitors’ network rollouts and may lead the CRT to deepen oversight; Telmex’s wholesale services are delivered through separated entities created after steps begun in 2018 and formalized with long-term concessions in 2020.