Summary

The timing interface for cable modem termination systems (DTI) defined in ITU‑T Recommendation J.211, supports the accurate and robust transport of the DTI server 10.24‑MHz master clock, 32-bit cable modem termination timestamp, and time of day, to the DTI client within the modular cable modem termination system (M-CMTS) cable network. The DTI protocol is structured to minimize the complexity and cost of the DTI client clocks, and the per-port cost of the shared server function while supporting all S-CDMA and TDMA timing requirements.