In article <[EMAIL PROTECTED]>, Richard B. Gilbert <[EMAIL PROTECTED]> wrote:
> The telephone companies tend to be very aware of time and timing. The > time division multiplexing of T1 and T3 lines requires splitting the > second very precisely. Cellular phones also require very precise That can be true of the public network, although even then it may be more so for the more engineering oriented layers, like bearer synchronisation, than the more commercial oriented layers, like call detail recording. However, it is very definitely not true of most PABX systems, which typically have wristwatch and eyeball set times and run in local time, with no automatic daylight saving switch, and have no high quality frequency standard. At least one PABX type consistently gets the start time wrong, even if it its clock is set properly. _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
