ZyXEL Communications 2864 Series, User Manual, Page: 38 / 267

3–2
LED Indicators
The combinations of the V34 and V32b LEDs indicate the following modes:
PWR PoWeR on indicator; lights up when the modem‘s power is ON.
TST TeST indicator; lights up when the modem is in test mode.
FAX FAX indicator; lights up when modem transmits or receives a fax.
VO VOice mode indicator; lit when modem is in voice mode.
SP * Serial Port active indicator; lights up when modem is using the se-
rial port for DTE communication.
PRP * PRinter Parallel port active indicator; lights up when modem is us-
ing the parallel port to drive a printer for fax printing.
PCP * PC Parallel port active indicator; lights up when modem is using the
parallel port to communicate with a PC's bidirectional parallel port.
Note: *Only one of the SP, PRP, or PCP LED indicators will light up at one time.
OH Off-Hook indicator; lit when modem is on-line or in off-hook state.
It is turned off when modem is off-line or in on-hook state.
EC Error Control indicator; lights up when modem is operated in an er-
ror controlled mode like MNP4 or V.42. Data compression mode
(V.42bis or MNP5) implies error control mode. Also used as re-
transmission indicator; blinks when retransmitting.
SQ Signal Quality indicator; lights up when signal quality is good;
flashes when it is on margin. At power on it flashes to indicate an
error condition; refer to the Diagnostics Chapter (18) for details.
ORG ORiGinate mode indicator; when lit, the modem will operate in orig-
inate mode if it is manually made to go off-hook by toggling the
DATA/VOICE switch. If not lit, the modem will be in answer mode.
V34 V.34 (or supported V.fast mode) indicator; flashes alternatively with
the V32b indicator when the modem is in a handshaking proce-
dure.
V32b V.32bis or V.32 mode indicator; flashes when dialing or before
handshaking.
V34 V32b Mode
OFF OFF V.22bis, V.22 and other modes with speed less than 9600bps
OFF ON V.32bis or V.32
ON OFF V.34 (or supported V.fast mode, if any)
ON ON ZyX mode