ZyXEL Communications U-336SA user manual EDR Application Example, Cid/Edr Rd Rd Edr

Bits	Bin.	Dec.	Description
	11	3	Report RING six times.

EDR detection (either CNG or DTMF tones) will be disabled once detection occurs. However, a customer’s program might not answer because the setting of the software may require multiple rings to answer. S51 bits 0-1 control the number of rings that the modem will report once the CNG or DTMF tone is detected.

The timing relationship between the Caller ID (if enabled), EDR, and ring detection is as follows:

ring1	ring2	ring3
***--------	***--------		***------------------------------
	3sec	3s 3s	3s	S7 time-out
+------	+---+------	+---	+------	+---	+-------------	+----
CID/EDR RD		EDR	RD	EDR	RD EDR	RD
CID=Caller ID task			RD=Ring Detection task			EDR=EDR task

ONOTE: DURING THE EDR PERIOD, ANY AT COMMAND WILL DISABLE THE EDR FUNCTION .

EDR Application Example

If we use ZFAX as our fax receiving application and we don’t want it to answer the call unless it is a fax call, the way to set it up would be:

1. Set ZFAX to answer on 2 rings.

Special Functions 61