ZyXEL U-336R User Guide - Page 76

S51.0=1, S51.4=1, S51.2=1, AT&WZ

Page 76 highlights

2. Set S51.0=1 to enable EDR and report RING twice. The modem will not report a normal RING and ZFAX will not answer a call unless EDR RING is reported. 3. Set S51.4=1 to enable fax CNG tone detection. It is reported as RING. 4. Set S51.2=1 to enable DTMF tone detection. It is reported as RING. If the remote fax machine does not generate the CNG tone, ask a fax caller through your answering machine message to press "*" (or any other DTMF key) if he or she wants to send a fax. Save the settings in a profile and reset the modem with AT&WZ. 62 Special Functions

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62
Special Functions
2. Set
S51.0=1
to enable EDR and report RING twice. The modem
will not report a normal RING and ZFAX will not answer a call
unless
EDR RING is reported.
3. Set
S51.4=1
to enable fax CNG tone detection. It is reported as
RING.
4. Set
S51.2=1
to enable DTMF tone detection. It is reported as
RING. If the remote fax machine does not generate the CNG tone,
ask a fax caller through your answering machine message to press
“*” (or any other DTMF key) if he or she wants to send a fax.
Save the settings in a profile and reset the modem with
AT&WZ
.