Panasonic UF-E1 Service Manual page 146

UF-E1
2. Signal Sequence
a. If the calling party is a Fax machine (with CNG signal)
If CNG signal is detected, the machine starts Fax communication procedure immediately.
b. If the calling party is a Fax machine (without CNG signal)
When the calling party does not send a CNG signal, the unit will start requesting (ringing) for the
operator's attention through the built-in speaker. If there is no response from the operator, the unit
defaults to the Fax mode.
Calling Party
(Fax Call)
Calling Party
(Fax Call)
Ringer
NSF / CSI / DIS
NSS / TSI
Fax Communication
Ringer
Pseudo Ring back tone
OGM1
OGM2
CED
NSF / CSI / DIS
NSS / TSI
Fax Communication
Machine
CNG
CED
Machine
On Line
T1 = 4 sec.
Request Operator Attention
T2 is determined by Fax setting.
No. 03 is 12 (36 sec.).
142
On Line
Monitoring CNG
CNG detected
1S
1S
2S