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Operation Manual 16
NNNN= 0202
Echo Cancel Disable
Default: 0202
15. Q&A
Q1: "PWR" lamp doesn't light up after power on？
A : No power transmitted to power plug, or the transformer is mal-functioned.
Q2: No further vocal sound heard after picking up the phone？
A : Phone line is disconnected or wrong wire connected.
Q3: Why the "Busy Tone" is heard directly wile picking up phone？(Not linked to PSTN)
A : GSM isn't ready yet, it might occur from the reasons of disconnecting antenna, not able
to receive signals or equipment mal-functioned.
Q4: How to set up allow-to-dial number？
A : Step I: connect a call receiver at phone.
Step II: lift up phone.
Step III: dial ＊＊＊＃, and set up all-to-dial code after hearing "beep" sound, then
press ＃ again to confirm.
If we need to set up more than one allow-to-dial codes, use ＃ to separate them off.
Ex: ＊＊＊＃0910＃ beep 0920＃ beep
It means that the allow-to-dial number is set to 0910 and 0920.
Step IV: hang up phone speaker and the setting process is over.
Q5: How to clear up the former setting of allow-to-dial？
A : Each new setting will auto-cover over the former two settings.
Q6: How to quick-sending out codes？
A : Press ＃ after dialing out phone call, it will be sent out immediately.
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