### USNO Modem Time Service

#### Synopsis

Address: 127.127.24.u
Reference ID: USNO
Driver ID: USNO
Serial Port: `/dev/cuau`; 1200 baud, 8-bits, no parity
Features: none
Requires: `/usr/include/sys/termios.h` header file with modem control

#### Description

No information available.

#### Monitor Data

When enabled by the `flag4` fudge flag, every received timecode is written as-is to the `clockstats` file.

#### Fudge Factors

`time1 time`
  Specifies the time offset calibration factor, in seconds and fraction, with default 0.0.

`time2 time`
  Not used by this driver.

`stratum number`
  Specifies the driver stratum, in decimal from 0 to 15, with default 0.

`refid string`
  Specifies the driver reference identifier, an ASCII string from one to four characters, with default `USNO`.

`flag1 0 | 1`
  Not used by this driver.

`flag2 0 | 1`
  Not used by this driver.

`flag3 0 | 1`
  Enable `ppsclock` line discipline/streams module if set.

`flag4 0 | 1`
  Enable `clockstats` recording if set.